阅读说明：本技术 竖井挖掘装置及其施工方法 (Shaft excavation device and construction method thereof ) 是由 贾连辉 田彦朝 肖威 李光 叶蕾 宋德华 齐志冲 付玉龙 于 2021-08-04 设计创作，主要内容包括：本发明为一种竖井挖掘装置及其施工方法,该竖井挖掘装置包括能在水下进行掘进作业的水下掘进车,水下掘进车包括车体、带动车体在竖井内移动的行走机构、对岩体进行开挖的掘进机构以及对开挖产生的岩渣进行收集并外排的收渣机构,行走机构设置于车体的底部,掘进机构和收渣机构均能上下摆动地设置于车体的前部,且掘进机构位于收渣机构的前方,收渣机构与出浆管路的一端连接,出浆管路的另一端延伸至地面以上。本发明解决了大断面竖井施工工序复杂、安全性低、适用性差的技术问题。(The invention relates to a shaft excavating device and a construction method thereof, wherein the shaft excavating device comprises an underwater tunneling vehicle capable of performing tunneling operation under water, the underwater tunneling vehicle comprises a vehicle body, a travelling mechanism for driving the vehicle body to move in a shaft, a tunneling mechanism for excavating rock masses and a slag collecting mechanism for collecting and discharging the rock slag generated by excavation, the travelling mechanism is arranged at the bottom of the vehicle body, the tunneling mechanism and the slag collecting mechanism can be arranged at the front part of the vehicle body in an up-and-down swinging manner, the tunneling mechanism is positioned in front of the slag collecting mechanism, the slag collecting mechanism is connected with one end of a slurry outlet pipeline, and the other end of the slurry outlet pipeline extends to above the ground. The invention solves the technical problems of complex construction process, low safety and poor applicability of the large-section vertical shaft.)

1. A shaft excavating device comprising an underwater excavation vehicle capable of performing an excavation operation under water, wherein:

the underwater tunneling vehicle comprises a vehicle body, a traveling mechanism, a tunneling mechanism, a slag collecting mechanism and a slag collecting mechanism, wherein the traveling mechanism is used for driving the vehicle body to move in a vertical shaft, the tunneling mechanism is used for excavating rock masses, the slag collecting mechanism is used for collecting and discharging rock slag generated by excavation, the traveling mechanism is arranged at the bottom of the vehicle body, the tunneling mechanism and the slag collecting mechanism can be arranged in the front of the vehicle body in an up-and-down swinging mode, the tunneling mechanism is located in the front of the slag collecting mechanism, the slag collecting mechanism is connected with one end of a slurry outlet pipeline, and the other end of the slurry outlet pipeline extends to the ground.

2. A shaft excavation apparatus as claimed in claim 1, wherein the excavating mechanism comprises an excavating blade, an excavating arm having one end hinged to the vehicle body, the excavating blade rotatably connected to the other end of the excavating arm, and a swing cylinder located below the excavating arm, a cylinder portion of the swing cylinder being hinged to the vehicle body, and a piston rod portion of the swing cylinder being hinged to the excavating arm.

3. A shaft excavating device as claimed in claim 2 wherein the excavating tool is of a cylindrical configuration, a plurality of cutting teeth for cutting a rock mass are provided on an outer wall of the excavating tool, a rotating shaft is provided at an axial center of the excavating tool, the excavating tool is rotatably connected to the excavating arm via the rotating shaft, a driving device for driving the excavating tool to rotate is provided in the excavating tool, and an output shaft of the driving device is connected to the rotating shaft.

4. A shaft excavation apparatus as claimed in claim 3, wherein the drive means is a hydraulic motor or an electric motor.

5. A shaft excavating device according to claim 1 wherein the slag collecting mechanism comprises a slag collecting bucket and an adjusting cylinder, the front part of the slag collecting bucket is provided with an opening for rock slag to enter, the rear part of the slag collecting bucket is hinged to the vehicle body, the adjusting cylinder is positioned above the slag collecting bucket, the cylinder body part of the adjusting cylinder is hinged to the vehicle body, and the piston rod part of the adjusting cylinder is hinged to the top of the slag collecting bucket.

6. A shaft excavation apparatus as claimed in claim 5, wherein the slag collection mechanism further comprises a slurry suction pipe and a slurry pump, one end of the slurry suction pipe extends into the interior of the slag collection bucket, the other end of the slurry suction pipe is connected to an inlet of the slurry pump, and an outlet of the slurry pump is connected to the slurry outlet line.

7. A shaft excavation apparatus as claimed in claim 6, wherein the slag receiving mechanism further comprises a pump station connected to the mud pump.

8. A shaft excavating apparatus as claimed in claim 5 wherein a grate plate is provided between the opening of the slag collection bucket and the interior of the slag collection bucket, the grate plate being provided with a plurality of filter holes.

9. A shaft excavating apparatus as claimed in claim 1 wherein said traveling mechanisms are provided in two sets, said two sets being provided on either side of said vehicle body;

each group of travelling mechanism comprises a travelling crawler, a driving wheel, a driven wheel and a driving motor, wherein the travelling crawler is connected between the driving wheel and the driven wheel, and the driving wheel is connected with an output shaft of the driving motor.

10. A shaft excavating device as claimed in claim 1 further comprising a controller disposed in a master control room on the ground, the control signal output of the controller being connected to the control ends of the travelling mechanism, the tunneling mechanism and the slag receiving mechanism, respectively.

11. A shaft excavating apparatus according to claim 10 wherein a position sensor and an attitude sensor are provided on the vehicle body, and a detection signal output terminal of the position sensor and a detection signal output terminal of the attitude sensor are connected to a detection signal receiving terminal of the controller, respectively.

12. A shaft excavation apparatus as claimed in claim 1, wherein the slurry outlet line is connected to an inlet of a slurry separation station located above ground, the outlet of the slurry separation station being connected to a slag yard.

13. A shaft excavating device according to claim 1 further comprising a cable support, wherein the cable support is disposed on the ground and near the wellhead, a plurality of lifting lug seats are disposed on the top of the vehicle body, each lifting lug seat is connected to one end of a lifting cable, and the other end of the lifting cable is connected to the cable support.

14. The shaft excavation construction method is characterized by comprising the following steps:

step S1: excavating an initial shaft, and installing open caisson segments on the inner wall of the initial shaft for reinforcement;

step S2: placing an underwater tunneling vehicle into the initial shaft, and moving the underwater tunneling vehicle to a preset excavation position through a traveling mechanism;

step S3: controlling the tunneling mechanism to cut the rock mass;

step S4: enabling the underwater tunneling vehicle to move forwards through the travelling mechanism, and collecting the dropped rock slag by a slag collecting mechanism;

step S5: discharging the slurry in the slag collecting mechanism to the ground through a slurry outlet pipeline;

step S6: and circulating the steps S3 to S5 until the digging is performed downwards to the preset depth.

15. A shaft excavation construction method according to claim 14, wherein in the step S2, water remains in the initial wellbore to ensure that a mud pump in the slag receiving mechanism is working properly.

16. A shaft excavation construction method according to claim 14, wherein the step S3 includes:

step S301: controlling the rotation of an excavation cutter in the tunneling mechanism;

step S302: controlling a piston rod part of a swing oil cylinder in the tunneling mechanism to contract so that an excavation arm in the tunneling mechanism drives an excavation cutter to move downwards;

step S303: the excavation knife cuts into a rock mass by a preset depth so as to crush the rock mass.

17. A shaft excavation construction method according to claim 16, wherein the excavating blade in a rotated state pushes the dropped rock slag to a rear side thereof to be collected by a slag collecting bucket in the slag collecting mechanism in step S4.

18. A shaft excavation construction method according to claim 17, wherein the step S5 includes:

step S501: filtering through a grating plate in the slag collecting mechanism, and allowing small-particle-size rock slag and slurry to enter the slag collecting bucket;

step S502: sucking small-particle-size rock slag and slurry into a slurry suction pipe in the slag collecting mechanism through a slurry pump in the slag collecting mechanism;

step S503: conveying the small-particle-size rock slag and the slurry to a mud-water separation station on the ground through the slurry outlet pipeline;

step S504: the mud-water separation station returns the separated mud to the well for cyclic utilization; and discharging the separated dregs to a dreg site.

19. A shaft excavation construction method according to claim 17, wherein in the step S6, after excavation to a predetermined depth, the caisson segment is lowered into the well by the segment lifting means, and the next ring of the caisson segment is spliced at the wellhead position.

20. A shaft excavation construction method according to claim 14, wherein the hoisting cable connected to the underwater vehicle is recovered by a hoisting device to lift the underwater vehicle to the ground in steps S1 to S6.

Technical Field

The invention relates to the technical field of shaft excavation, in particular to a shaft excavation device and a construction method thereof, and particularly relates to a large-section shaft excavation device and a construction method thereof.

Background

Along with the continuous development of urban space, the engineering requirements of urban underground engineering construction such as extra-large diameter vertical shafts (vertical shafts with the diameter larger than 20 m) of underground parking lots, shield starting wells, underground pile foundations and the like are increasingly vigorous, and along with the continuous increase of excavation depth, water-bearing strata are generally encountered.

The traditional construction method generally adopts a method of cast-in-place pile and continuous wall construction and is matched with precipitation construction to stabilize and support soil, so that the construction safety is ensured; and then, excavating construction is carried out by adopting an excavator or a drilling and blasting method according to the hardness of the stratum, but the method has the defects of multiple working procedures, complex engineering structure and lower safety. For urban construction projects (such as underground parking lots and the like), the field, the construction period, the noise and the like are generally strictly controlled, the traditional operation method is limited, and the current conventional shaft drilling equipment is only suitable for the excavation of small-diameter shafts and is not suitable for the excavation of large-section shafts.

Aiming at the problems of complex construction procedure, low safety and poor applicability of the large-section vertical shaft in the related technology, no effective solution is provided at present.

Therefore, the inventor provides the vertical shaft excavating device and the construction method thereof by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.

Disclosure of Invention

The invention aims to provide a vertical shaft excavating device and a construction method thereof, which do not need to carry out water control treatment on a vertical shaft in advance, carry out excavation operation of underwater soil and rock in the vertical shaft through a movable underwater tunneling vehicle, do not need manual work for descending a well in the whole process, have less personnel demand, are efficient and safe in construction, and realize highly automatic and safe construction.

The purpose of the invention can be realized by adopting the following technical scheme:

the invention provides a shaft excavating device, which comprises an underwater tunneling vehicle capable of performing tunneling operation underwater, wherein:

the underwater tunneling vehicle comprises a vehicle body, a traveling mechanism, a tunneling mechanism, a slag collecting mechanism and a slag collecting mechanism, wherein the traveling mechanism is used for driving the vehicle body to move in a vertical shaft, the tunneling mechanism is used for excavating rock masses, the slag collecting mechanism is used for collecting and discharging rock slag generated by excavation, the traveling mechanism is arranged at the bottom of the vehicle body, the tunneling mechanism and the slag collecting mechanism can be arranged in the front of the vehicle body in an up-and-down swinging mode, the tunneling mechanism is located in the front of the slag collecting mechanism, the slag collecting mechanism is connected with one end of a slurry outlet pipeline, and the other end of the slurry outlet pipeline extends to the ground.

In a preferred embodiment of the present invention, the tunneling mechanism includes a digging blade, a digging arm, and a swing cylinder, one end of the digging arm is hinged to the vehicle body, the digging blade is rotatably connected to the other end of the digging arm, the swing cylinder is located below the digging arm, a cylinder body portion of the swing cylinder is hinged to the vehicle body, and a piston rod portion of the swing cylinder is hinged to the digging arm.

In a preferred embodiment of the present invention, the excavating tool is a cylindrical structure, a plurality of cutting teeth for cutting a rock mass are provided on an outer wall of the excavating tool, a rotating shaft is provided at an axial position of the excavating tool, the excavating tool is rotatably connected to the excavating arm through the rotating shaft, a driving device for driving the excavating tool to rotate is provided in the excavating tool, and an output shaft of the driving device is connected to the rotating shaft.

In a preferred embodiment of the present invention, the driving device is a hydraulic motor or an electric motor.

In a preferred embodiment of the present invention, the slag collecting mechanism includes a slag collecting bucket and an adjusting cylinder, the front portion of the slag collecting bucket is provided with an opening for rock slag to enter, the rear portion of the slag collecting bucket is hinged to the vehicle body, the adjusting cylinder is located above the slag collecting bucket, a cylinder body portion of the adjusting cylinder is hinged to the vehicle body, and a piston rod portion of the adjusting cylinder is hinged to the top of the slag collecting bucket.

In a preferred embodiment of the present invention, the slag collecting mechanism further includes a slurry suction pipe and a slurry pump, one end of the slurry suction pipe extends into the slag collecting bucket, the other end of the slurry suction pipe is connected to an inlet of the slurry pump, and an outlet of the slurry pump is connected to the slurry outlet pipeline.

In a preferred embodiment of the present invention, the slag collecting mechanism further comprises a pump station, and the pump station is connected to the mud pump.

In a preferred embodiment of the present invention, a grating plate is disposed between the opening of the slag collecting bucket and the inside of the slag collecting bucket, and the grating plate is provided with a plurality of filtering holes.

In a preferred embodiment of the present invention, the two sets of traveling mechanisms are respectively disposed on two sides of the vehicle body;

each group of travelling mechanism comprises a travelling crawler, a driving wheel, a driven wheel and a driving motor, wherein the travelling crawler is connected between the driving wheel and the driven wheel, and the driving wheel is connected with an output shaft of the driving motor.

In a preferred embodiment of the present invention, the shaft excavation device further includes a controller, the controller is disposed in a main control chamber on the ground, and a control signal output end of the controller is connected to the control end of the traveling mechanism, the control end of the tunneling mechanism, and the control end of the slag collecting mechanism, respectively.

In a preferred embodiment of the present invention, a position sensor and an attitude sensor are disposed on the vehicle body, and a detection signal output end of the position sensor and a detection signal output end of the attitude sensor are respectively connected to a detection signal receiving end of the controller.

In a preferred embodiment of the invention, the slurry outlet pipeline is connected with an inlet of a mud-water separation station on the ground, and an outlet of the mud-water separation station is connected with a slag yard.

In a preferred embodiment of the invention, the shaft excavation device further comprises a cable support, the cable support is arranged on the ground and close to a wellhead, the top of the vehicle body is provided with a plurality of lifting lug seats, each lifting lug seat is connected with one end of a lifting cable, and the other end of the lifting cable is connected with the cable support.

The invention provides a shaft excavation construction method, which comprises the following steps:

step S1: excavating an initial shaft, and installing open caisson segments on the inner wall of the initial shaft for reinforcement;

step S2: placing an underwater tunneling vehicle into the initial shaft, and moving the underwater tunneling vehicle to a preset excavation position through a traveling mechanism;

step S3: controlling the tunneling mechanism to cut the rock mass;

step S4: enabling the underwater tunneling vehicle to move forwards through the travelling mechanism, and collecting the dropped rock slag by a slag collecting mechanism;

step S5: discharging the slurry in the slag collecting mechanism to the ground through a slurry outlet pipeline;

step S6: and circulating the steps S3 to S5 until the digging is performed downwards to the preset depth.

In a preferred embodiment of the present invention, in the step S2, water remains in the initial wellbore to ensure that a mud pump in the slag collecting mechanism works normally.

In a preferred embodiment of the present invention, the step S3 includes:

step S301: controlling the rotation of an excavation cutter in the tunneling mechanism;

step S302: controlling a piston rod part of a swing oil cylinder in the tunneling mechanism to contract so that an excavation arm in the tunneling mechanism drives an excavation cutter to move downwards;

step S303: the excavation knife cuts into a rock mass by a preset depth so as to crush the rock mass.

In a preferred embodiment of the present invention, in the step S4, the digging blade in the rotating state pushes the dropped rock debris to the rear side thereof to be collected by a slag collecting bucket in the slag collecting mechanism.

In a preferred embodiment of the present invention, the step S5 includes:

step S501: filtering through a grating plate in the slag collecting mechanism, and allowing small-particle-size rock slag and slurry to enter the slag collecting bucket;

step S502: sucking small-particle-size rock slag and slurry into a slurry suction pipe in the slag collecting mechanism through a slurry pump in the slag collecting mechanism;

step S503: conveying the small-particle-size rock slag and the slurry to a mud-water separation station on the ground through the slurry outlet pipeline;

step S504: the mud-water separation station returns the separated mud to the well for cyclic utilization; and discharging the separated dregs to a dreg site.

In a preferred embodiment of the present invention, in step S6, after the excavation is performed to a preset depth, the caisson segments are lowered into the well by the segment lifting device, and the next ring of caisson segments is assembled at the wellhead position.

In a preferred embodiment of the present invention, in the steps S1 to S6, the hoisting cable connected to the underwater vehicle is recovered by the hoisting device, and the underwater vehicle is lifted to the ground.

From the above, the shaft excavating device and the construction method thereof of the invention have the characteristics and advantages that: the underwater tunneling vehicle is driven to freely move to a preset initial position through a remote control travelling mechanism without manual descending in the process of tunneling the vertical shaft, and starts to perform excavation operation on a rock mass through the tunneling mechanism from the initial position; in addition, when the rock mass is tunneled, the rock slag generated by excavation is collected and is discharged to the ground through the slag collecting mechanism, the problem that the rock slag is difficult to treat is effectively solved, the excavation, the slag collecting and the slag discharging are integrated, the construction method is suitable for a water construction environment, manual work is not needed in the whole process, the personnel demand is low, the construction is efficient and safe, and the highly-automatic and safe construction is realized.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.

Wherein:

FIG. 1: is a structural schematic diagram of the shaft excavating device.

FIG. 2: the invention is a structural schematic diagram of an underwater tunneling vehicle in a vertical shaft excavating device.

FIG. 3: is a top view of the underwater excavation vehicle in the shaft excavation apparatus of the present invention.

FIG. 4: is one of the schematic diagrams of the excavation states of the underwater tunneling vehicle in the vertical shaft excavation device.

FIG. 5: the second schematic diagram of the excavation state of the underwater tunneling vehicle in the shaft excavation device is shown.

The reference numbers in the invention are:

1. an underwater tunneling vehicle; 101. A vehicle body;

102. a traveling mechanism; 1021. A drive motor;

1022. a driving wheel; 1023. A driven wheel;

1024. a walking crawler belt; 103. A tunneling mechanism;

1031. digging a cutter; 1032. Excavating an arm;

1033. a swing oil cylinder; 104. A slag collecting mechanism;

1041. a slag collecting bucket; 1042. Adjusting the oil cylinder;

1043. a pulp suction pipe; 1044. A slurry pump;

1045. a pump station; 1046. A grid plate;

105. lifting the lug seat; 106. Hoisting the cable;

2. a slurry outlet pipeline; 3. Open caisson segment;

4. a cable holder; 5. A mud-water separation station;

6. a slag field; 7. A segment lifting device;

8. and a master control room.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

The directions of up, down, front, back, etc. in the present invention are all based on the directions of up, down, front, back in fig. 2, and will be described together again.

Implementation mode one

As shown in fig. 1 to 3, the present invention provides a shaft excavating device including an underwater excavation vehicle 1 capable of performing an excavation operation under water, wherein: the underwater tunneling vehicle 1 comprises a vehicle body 101, a traveling mechanism 102, a tunneling mechanism 103 and a slag collecting mechanism 104, wherein the traveling mechanism 102 is used for driving the vehicle body 101 to move in a vertical shaft, the tunneling mechanism 103 is used for excavating rock bodies, the slag collecting mechanism 104 is used for collecting and discharging rock slag generated by excavation, the traveling mechanism 102 is arranged at the bottom of the vehicle body 101, the tunneling mechanism 103 and the slag collecting mechanism 104 can be arranged at the front part of the vehicle body 101 in an up-and-down swinging mode, the tunneling mechanism 103 is located in front of the slag collecting mechanism 104, the slag collecting mechanism 104 is connected with one end of a slurry outlet pipeline 2, and the other end of the slurry outlet pipeline 2 extends to the ground.

The underwater tunneling vehicle 1 is lowered into the well, the vehicle body 101 can be driven to freely move to a preset initial position in the well through the remote control of the travelling mechanism 102, and the tunneling operation is carried out on the rock body through the tunneling mechanism 103 from the initial position, so that the underwater tunneling vehicle 1 is flexible to move, is suitable for the excavation of vertical shafts with different section shapes and sizes, and is wide in application range; in addition, as the tunneling mechanism 103 is positioned in front of the slag collecting mechanism 104, when the tunneling mechanism 103 tunnels the rock mass, the slag generated by excavation can be collected by the slag collecting mechanism 104 and is discharged to the ground, so that the problem of difficult slag treatment is solved; the invention integrates excavation, slag collection and slag discharge, is suitable for the construction environment with water, does not need manual well descending in the whole process, has less personnel demand, has high efficiency and safety in construction, and realizes highly automatic and safe construction.

In an alternative embodiment of the present invention, as shown in fig. 2 and 3, the tunneling mechanism 103 includes two digging blades 1031, two digging arms 1032 and two swinging cylinders 1033, one end of each of the two digging arms 1032 is hinged to the front portion of the vehicle body 101, the digging blades 1031 are rotatably connected to the other ends of the two digging arms 1032, the two swinging cylinders 1033 are respectively located below the corresponding digging arms 1032, the cylinder portions of the two swinging cylinders 1033 are hinged to the front portions of the vehicle body 101, and the piston rod portions of the two swinging cylinders 1033 are hinged to the middle portions of the corresponding digging arms 1032. By controlling the amount of extension and contraction of the piston rod portion of the swing cylinder 1033, the vertical swing of the excavating arm 1032 is controlled, and the adjustment of the excavating position by the excavating blade 1031 is realized.

Specifically, as shown in fig. 2 and 3, the digging blade 1031 has a cylindrical structure to ensure the digging accuracy of the circular cross section. The outer wall of the excavation tool 1031 is provided with a plurality of cutting teeth for cutting a rock mass, wherein each cutting tooth can be uniformly distributed on the outer wall of the excavation tool 1031 or can be centrally distributed on the outer wall of the excavation tool 1031 according to a cutting position. The axial center of the digging blade 1031 is provided with a rotating shaft, the digging blade 1031 is rotatably connected with the digging arm 1032 through the rotating shaft, the digging blade 1031 is internally provided with a driving device for driving the digging blade 1031 to rotate, an output shaft of the driving device is connected with the rotating shaft, and the digging blade 1031 is driven to rotate through the driving device.

Further, the driving device may be, but is not limited to, a hydraulic motor or an electric motor.

In an alternative embodiment of the present invention, as shown in fig. 2 and fig. 3, the slag collecting mechanism 104 includes two slag collecting buckets 1041 and two adjusting cylinders 1042, the front portion of the slag collecting bucket 1041 is provided with an opening for rock slag to enter, the opening is communicated with the inside of the slag collecting bucket 1041, the rear portion of the slag collecting bucket 1041 is hinged to the front portion of the vehicle body 101 through a connecting lug, both the two adjusting cylinders 1042 are located above the slag collecting bucket 1041, the cylinder portions of the two adjusting cylinders 1042 are respectively hinged to the front portion of the vehicle body 101, and the piston rod portions of the two adjusting cylinders 1042 are respectively hinged to the top portion of the slag collecting bucket 1041. The up-and-down swing of the slag collecting bucket 1041 is controlled by controlling the extension amount of the piston rod part of the adjusting oil cylinder 1042, so that the adjustment of the slag collecting position by the slag collecting bucket 1041 is realized.

Further, as shown in fig. 2, the slag collecting mechanism 104 further includes a slurry suction pipe 1043 and a slurry pump 1044, the slurry pump 1044 is mounted on the vehicle body 101, one end of the slurry suction pipe 1043 extends into the slag collecting bucket 1041, the other end of the slurry suction pipe 1043 is connected to an inlet of the slurry pump 1044, and an outlet of the slurry pump 1044 is connected to the slurry outlet pipeline 2. By controlling the working state of the slurry pump 1044, the rock slag and slurry collected in the slag collection bucket 1041 are sucked into the slurry outlet pipeline 2 and discharged to the ground.

Further, as shown in fig. 1, the slurry outlet pipeline 2 is connected with an inlet of a mud-water separation station 5 located on the ground, a water outlet of the mud-water separation station 5 is connected with the inside of the shaft, and a slag outlet of the mud-water separation station 5 is connected with a slag field 6. Therefore, the mud-water separation station 5 can return the separated mud to the well for recycling, and the separated dregs are discharged to a dreg site 6.

Further, as shown in fig. 2, the slag collecting mechanism 104 further includes a pump station 1045, the pump station 1045 is disposed on the vehicle body 101, and the pump station 1045 is connected to the slurry pump 1044. And a pump station 1045 is used for providing suction force for the slurry pump 1044, so that the slurry pump 1044 can work normally.

In an alternative embodiment of the present invention, as shown in fig. 2 and 3, a grating plate 1046 is disposed between the opening of the slag collecting bucket 1041 and the inside of the slag collecting bucket 1041, the grating plate 1046 is disposed along the vertical direction to intercept the opening of the slag collecting bucket 1041 and the inside of the slag collecting bucket 1041, and a plurality of filtering holes are opened on the grating plate 1046. The particle size of the rock slag entering the slag collection bucket 1041 is limited by the grating plate 1046, the rock slag with large particle size is blocked outside the slag collection bucket 1041, and the rock slag with small particle size and slurry enter the slag collection bucket 1041. The aperture of the filtering holes can be adjusted according to actual conditions, so that the particle size of the collectable rock slag can be selected by adjusting the aperture of the filtering holes on the grating plate 1046, and the rock slag with the particle size larger than the aperture of the filtering holes can be regarded as large-particle rock slag.

In an alternative embodiment of the present invention, as shown in fig. 2 and 3, two sets of traveling mechanisms 102 are provided, and the two sets of traveling mechanisms 102 are respectively disposed on two sides of the vehicle body 101; each set of the traveling mechanism 102 includes a traveling crawler 1024, a driving wheel 1022, a driven wheel 1023 and a driving motor 1021, the traveling crawler 1024 is connected between the driving wheel 1022 and the driven wheel 1023, and the driving wheel 1022 is connected with an output shaft of the driving motor 1021. The working state of the driving motor 1021 is controlled to drive the driving wheel 1022 to rotate, and then the driving wheel 1022 and the driven wheel 1023 are matched to drive the walking crawler 1024 to move.

In an alternative embodiment of the present invention, as shown in fig. 1, the shaft excavation apparatus further includes a controller, the controller is disposed in the main control room 8 on the ground, and control signal output ends of the controller are respectively connected to a control end of the traveling mechanism 102 (i.e., the driving motor 1021), a control end of the tunneling mechanism 103 (i.e., the swing cylinder 1033), and a control end of the slag collecting mechanism 104 (i.e., the adjusting cylinder 1042 and the slurry pump 1044), so that the operating states of the driving motor 1021, the swing cylinder 1033, the adjusting cylinder 1042, and the slurry pump 1044 can be remotely controlled by the controller.

Further, a position sensor and an attitude sensor are arranged on the vehicle body 101, and a detection signal output end of the position sensor and a detection signal output end of the attitude sensor are respectively connected with a detection signal receiving end of the controller. The position sensor is used for acquiring the position information of the underwater tunneling vehicle 1 in real time, and the attitude sensor is used for acquiring the attitude information of the underwater tunneling vehicle 1 in real time, so that the position and the working attitude of the underwater tunneling vehicle 1 are monitored.

In an optional embodiment of the present invention, as shown in fig. 1, the shaft excavation device further includes a cable support 4, the cable support 4 is fixedly disposed on the ground and near the wellhead, the top of the vehicle body 101 is provided with a plurality of lifting lug seats 105, each lifting lug seat 105 is connected to one end of a lifting cable 106, the other end of each lifting cable 106 is connected to the cable support 4, and after the underwater vehicle 1 completes the excavation operation or needs to be overhauled, the underwater vehicle 1 is lifted and retracted to the ground through the lifting cable 106 connected to the vehicle body 101.

Further, the controller can remotely control the underwater roadheader 1 through wired connection or wireless transmission. When a wired connection mode is adopted, the controller is respectively connected with functional components such as the driving motor 1021, the swing oil cylinder 1033, the adjusting oil cylinder 1042, the slurry pump 1044, the position sensor and the attitude sensor through cables for transmitting signals, and the cables for transmitting signals and pipelines such as a slurry suction pipe 1043 for discharging liquid outside can be arranged on the cable support 4.

In the invention, as shown in fig. 4 and 5, the underwater excavation vehicle 1 is suitable for, but not limited to, shaft excavation work with a circular or rectangular cross section, and is also suitable for shaft excavation with other different sizes and cross section shapes, and the shape and the size of the excavation knife 1031 can be adjusted according to the shape of the cross section, so that the surface of the excavation knife 1031 can be adapted to the excavation position, and the excavation accuracy of the excavation outline is improved.

The shaft excavating device has the characteristics and advantages that:

the shaft excavating device is simple in structure and flexible in movement, is suitable for excavating shafts with different section shapes and sizes, is particularly suitable for excavating shafts with large sections, and provides brand-new equipment and means for shaft excavation.

The shaft excavating gear can collect the rock slag generated by excavation and externally reach the ground when the rock mass is excavated, the excavation, slag collection and slag discharge are integrated, the problem that the rock slag is difficult to treat after the excavation is effectively solved, and the underground remote excavation and the continuous slag discharge are realized.

The shaft excavating device is suitable for water construction environments, manual descending is not needed in the whole process, personnel requirements are few, construction is efficient and safe, and highly-automatic and safe construction is achieved.

Second embodiment

The invention provides a shaft excavation construction method, which comprises the following steps:

step S1: excavating an initial shaft with a preset initial depth, and reinforcing by installing a sunk well pipe piece 3 on the inner wall of the initial shaft;

specifically, the open caisson segments 3 are installed one by one through a gantry crane or other hoisting tools, and the adjacent two open caisson segments 3 are connected through bolts so that the open caisson segments 3 form a whole.

Step S2: the underwater tunneling vehicle 1 is lowered into an initial shaft, and the underwater tunneling vehicle 1 is moved to a preset excavation position through a remote control travelling mechanism 102;

further, in step S2, it is necessary to ensure that there is a certain accumulated water in the initial wellbore, so as to ensure that the slurry pump 1044 in the slag collecting mechanism 104 can work normally in the initial wellbore.

Step S3: controlling the tunneling mechanism 103 to cut the rock mass;

further, step S3 includes:

step S301: remotely controlling the rotation of an excavation knife 1031 in the tunneling mechanism 103;

step S302: the piston rod part of the swing oil cylinder 1033 in the remote control tunneling mechanism 103 is slowly contracted, so that the excavation arm 1032 in the tunneling mechanism 103 drives the excavation blade 1031 to move downwards;

step S303: the excavating blade 1031 cuts into the rock mass a predetermined depth to fracture the rock mass.

Step S4: the underwater tunneling vehicle 1 is moved forwards through the travelling mechanism 102, and the falling rock slag is collected by the slag collecting mechanism 104;

specifically, in step S4, the remote control traveling mechanism 102 drives the digging blade 1031 to move forward, the digging blade 1031 crushes and peels off the rock mass located in front of the digging blade 1031, and then the digging blade 1031 in the rotating state pushes the dropped rock slag to the rear of the digging blade 1031 so as to be collected by the slag collecting bucket 1041 in the slag collecting mechanism 104.

Step S5: a mud pump 1044 in the slag receiving mechanism 104 is remotely controlled to work, and the mud in the slag receiving mechanism 104 is discharged to the ground through a mud outlet pipeline 2;

further, step S5 includes:

step S501: the rock slag with large particle size is blocked outside the slag collecting bucket 1041 by filtering through the grating plate 1046 in the slag collecting mechanism 104, and the rock slag with small particle size and slurry enter the slag collecting bucket 1041;

step S502: the small-particle-size rock slag and the slurry are sucked into a slurry suction pipe 1043 in the slag collecting mechanism 104 through a slurry pump 1044 in the slag collecting mechanism 104;

step S503: conveying the small-particle-size rock slag and the slurry to a mud-water separation station 5 on the ground through a slurry outlet pipeline 2;

step S504: the mud-water separation station 5 returns the separated mud to the well for cyclic utilization; the separated dregs are discharged to a dregs field 6 and transferred to other fields by a transport vehicle.

Step S6: and circulating the steps S3 to S5 until the digging is performed downwards to the preset depth.

Specifically, in step S6, after the underwater roadheader 1 completes single-layer excavation according to the setting, the above actions are repeated to cyclically excavate several layers downwards, after the excavation reaches the preset depth, the open caisson segment 3 is lowered into the well through the segment lifting device 7, the next ring of open caisson segment 3 is assembled at the well head position, and the whole process is circulated from step S3 to step S5 until the excavation reaches the preset depth downwards.

Further, in step S6, synchronously lowering corresponding pipelines and cables as the excavation depth is continuously increased; the working state and position of the underwater tunneling vehicle 1 can be remotely controlled by a controller in a main control room 8 on the ground, and the control mode can be wired control or wireless control.

In an alternative embodiment of the present invention, before step S1 (i.e., before the construction work is started), the site of the excavated shaft needs to be inspected and reinforced to ensure that the site has sufficient bearing capacity.

In an alternative embodiment of the present invention, in steps S1 to S6, the hoisting cable 106 connected to the underwater vehicle 1 is recovered by the hoisting device, and the underwater vehicle 1 is lifted to the ground, so that the underwater vehicle 1 subjected to the maintenance work after the excavation work is completed or in the middle can be lifted.

The shaft excavation construction method has the characteristics and advantages that:

according to the shaft excavation construction method, the underwater tunneling vehicle 1 can be used for excavating the shaft, the underwater tunneling vehicle 1 is flexible to move, can adapt to shaft excavation with different section shapes and sizes, is wide in application range and particularly suitable for excavating large-section shafts, and the underwater tunneling vehicle 1 can collect rock slag generated by excavation and enables the rock slag to reach the ground while excavating rock masses, so that the shaft excavation construction method is integrated with excavation, slag collection and slag discharge, is suitable for a water construction environment, does not need manual shaft descending in the whole process, is few in personnel demand, and is efficient and safe in construction.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.