Inclined shaft TBM suitable for small curve turning
阅读说明:本技术 一种适用于小曲线转弯的斜井tbm (Inclined shaft TBM suitable for small curve turning ) 是由 刘飞香 程永亮 彭正阳 巫敏 尹建超 谢铮 柯威 于 2020-07-17 设计创作,主要内容包括:本发明公开了一种适用于小曲线转弯的斜井TBM,包括:可变径的刀盘,刀盘用以掘挖隧道;可变径的前盾,前盾与刀盘相连,前盾能够抵撑隧道洞壁;与前盾连接的主推进机构,主推进机构用以驱动前盾运动以控制刀盘的掘进方向。上述适用于小曲线转弯的斜井TBM通过主推进机构驱动前盾运动,从而可以调节刀盘的掘进方向,以满足隧道掘进方向需要改变时的转弯需求,同时可通过刀盘和前盾的变径操作来适应超小半径转弯。与传统无法采用掘进机技术进行反井隧道施工的掘进机相比,上述适用于小曲线转弯的斜井TBM可以适应变径、小转弯、正斜井和反斜井的掘进施工。(The invention discloses a kind of inclined shaft TBM which is suitable for small curve turning, it includes: the variable-diameter cutter head is used for digging a tunnel; the front shield is connected with the cutter head and can support the tunnel wall; and the main propelling mechanism is connected with the front shield and is used for driving the front shield to move so as to control the tunneling direction of the cutter head. The inclined shaft TBM suitable for small curve turning drives the front shield to move through the main propulsion mechanism, so that the tunneling direction of the cutter head can be adjusted to meet the turning requirement when the tunneling direction of a tunnel needs to be changed, and meanwhile, the ultra-small radius turning can be adapted through the reducing operation of the cutter head and the front shield. Compared with the traditional heading machine which cannot adopt the heading machine technology to carry out reverse tunnel construction, the inclined shaft TBM suitable for small curve turning can adapt to the heading construction of reducing, small turning, a positive inclined shaft and a reverse inclined shaft.)
1. A slant entry TBM adapted for use in tight curve turns, comprising:
the variable-diameter cutter head (1), the cutter head (1) is used for excavating a tunnel;
the variable-diameter anterior shield (2), the anterior shield (2) is connected with the cutter head (1), and the anterior shield (2) can support the tunnel wall;
and the main propulsion mechanism (4) is connected with the front shield (2), and the main propulsion mechanism (4) is used for driving the front shield (2) to move so as to control the tunneling direction of the cutter head (1).
2. The deviated well TBM adapted for small curve turns according to claim 1, characterized in that the cutterhead (1) comprises:
a cutter head middle block (101);
a plurality of edge block assemblies detachably connected to the periphery of the cutterhead middle block (101);
and a cutterhead connecting block (102) detachably connected with the cutterhead middle block (101) is further arranged between any two adjacent side block assemblies.
3. The deviated well TBM adapted for small curve turning according to claim 2, characterized in that the foreshield (2) comprises:
the central connecting block (209) is connected with the cutterhead middle block (101);
a plurality of shields which are detachably connected to the periphery of the central connecting block (209) and can perform telescopic motion along the radial direction of the central connecting block (209).
4. The deviated well TBM suitable for small curve turning according to any one of claims 1 to 3, wherein a tightening shield (5) is further connected to the main propulsion mechanism (4), and at least two auxiliary tightening mechanisms (8) are further arranged on one side of the tightening shield (5) far away from the main propulsion mechanism (4); when the cutter head (1) digs a tunnel, the tightening shield (5) and all the auxiliary tightening mechanisms (8) are used for propping against the tunnel wall.
5. The deviated well TBM for small curve turns according to claim 4, wherein any one of the auxiliary tightening mechanisms (8) comprises:
a slag sliding channel (801) which is arranged at the bottom of the auxiliary tightening mechanism (8) and used for gathering the dug crushed slag to output the crushed slag;
two supporting shoes (802) which are arranged above the slag sliding channel (801), are respectively arranged on two sides of the auxiliary supporting mechanism (8) and are used for supporting the wall of the tunnel;
at least one group of tightening thrust mechanisms (803) for driving the supporting shoes (802) to move in an extending and contracting manner are arranged on the inner side of any supporting shoe (802).
6. A deviated well TBM suitable for use in tight curve turns according to claim 5, wherein the outside of any one of said shoes (802) is provided with an anti-skid component for raising friction.
7. The inclined shaft TBM suitable for the small curve turning as claimed in claim 6, wherein at least two elastic anti-slip components (804) are further arranged on any one of the supporting shoes (802) for preventing the supporting shoes (802) from slipping down along the tunnel wall when the cutterhead (1) digs in the inclined shaft.
8. The slant well TBM suitable for tight curve turns of claim 7, wherein any one of said resilient anti-slip assemblies (804) comprises a wedge slidably connected to said shoe (802) for abutting against the tunnel wall when said shoe (802) slides down and a pretensioned spring connected to said wedge.
9. The slant well TBM adapted for small curve turns of claim 8, further comprising:
a first slag discharging device (9011) used for outputting slag when the cutter head (1) is dug in a horizontal hole;
and the second slag discharging device (9012) is arranged below the first slag discharging device (9011) and used for outputting crushed slag when the cutter head (1) digs an inclined shaft.
10. The deviated well TBM adapted for tight curve turning according to claim 9, characterized in that a jumbolter system (6) is provided between the tightening shield (5) and the auxiliary tightening mechanism (8) near one side of the tightening shield (5), said jumbolter system (6) comprising:
an endless track (601);
the rock drill (602) is arranged on the annular track (601) and can slide along the annular track (601);
a hydraulic thruster (603) connected to the rock drilling machine (602) for propelling the rock drilling machine (602) in motion.
Technical Field
The invention relates to the technical field of tunneling, in particular to a TBM (tunnel boring machine) for a deviated well with a small curve turning.
Background
The heading machine technology represents the latest generation of tunnel heading technology, has the outstanding advantages of high construction efficiency, safety, reliability, less over-under excavation, high mechanization degree and the like, and is the optimal scheme for tunnel construction at present.
Taking the construction of a pumped storage power station as an example, a plurality of tunnels need to be built between two reservoirs with a certain height drop, so that the functions of energy storage, power generation, material personnel transportation and the like are realized. The tunnel has the characteristics of large gradient, long distance, alternate positive and negative inclined shafts, multi-section turning and diameter changing. At present, the drilling and blasting method is mainly adopted for construction, and the method has a series of problems of prominent safety problem, difficult quality control, low efficiency and the like. Under the prior art, a series of problems of supporting, deslagging, supporting, material transportation and the like are required to be solved for realizing the raise boring construction, and some high-difficulty projects need the boring machine to have the capability of turning with an ultra-small radius, which puts high requirements on the integral structure design and the internal space arrangement of the boring machine.
Therefore, how to avoid the problem that the traditional heading machine cannot meet the construction requirement of the raise-shaft tunnel is a technical problem to be solved by technical personnel in the field at present.
Disclosure of Invention
The invention aims to provide a slant shaft TBM suitable for small curve turning, which can realize the tunneling construction of variable diameter, small turning, a positive slant shaft and a reverse slant shaft and can solve the problems of ultra-small radius turning, large-gradient slant shaft slag tapping, anti-slip and the like in the reverse construction process.
In order to achieve the above object, the present invention provides a deviated well TBM suitable for a small curve turning, comprising:
the variable-diameter cutter head is used for excavating a tunnel;
the front shield is connected with the cutter head and can support the tunnel wall;
and the main propulsion mechanism is connected with the front shield and used for driving the front shield to move so as to control the tunneling direction of the cutter head.
Optionally, the cutter head comprises:
a cutter head middle block;
the edge block assemblies are detachably connected to the periphery of the cutterhead middle block;
and a cutterhead connecting block detachably connected with the cutterhead middle block is further arranged between any two adjacent edge block assemblies.
Optionally, the anterior shield comprises:
the central connecting block is connected with the cutterhead middle block;
the shield is detachably connected to the periphery of the central connecting block and can move in a telescopic mode along the radial direction of the central connecting block.
Optionally, the main propulsion mechanism is further connected with a tightening shield, and at least two auxiliary tightening mechanisms are further arranged on one side of the tightening shield, which is far away from the main propulsion mechanism; when the cutter head digs the tunnel, the supporting shield and all the auxiliary supporting mechanisms are used for supporting the tunnel wall.
Optionally, any of the auxiliary tightening mechanisms comprises:
the slag sliding channel is arranged at the bottom of the auxiliary tightening mechanism and used for gathering the excavated crushed slag to output the crushed slag;
the two supporting shoes are arranged above the slag sliding channel, are respectively arranged at two sides of the auxiliary supporting mechanism and are used for supporting the wall of the tunnel;
at least one group of tightening thrust mechanisms for driving the supporting shoes to do telescopic motion are arranged on the inner side of any supporting shoe.
Optionally, the outer part of any one of the supporting shoes is provided with an anti-skid component for improving friction force.
Optionally, at least two elastic anti-slip components are further arranged on any one of the supporting shoes for preventing the supporting shoes from sliding down along the wall of the tunnel when the cutterhead is used for inclined shaft excavation.
Optionally, any one of the elastic anti-slip assemblies comprises a wedge block which is slidably connected to the supporting shoe and is used for abutting against the wall of the tunnel when the supporting shoe slides downwards, and a pre-tightening spring connected with the wedge block.
Optionally, the method further comprises:
the first slag discharging device is used for outputting slag when the cutter head is used for digging a flat hole;
and the second slag discharging device is arranged below the first slag discharging device and used for outputting slag when the cutter head digs the inclined shaft.
Optionally, prop tight shield and be close to prop tight shield one side be equipped with the jumbolter system between the supplementary tight mechanism of propping, the jumbolter system includes:
an annular track;
the rock drill is arranged on the annular track and can slide along the annular track;
and the hydraulic propeller is connected with the rock drilling machine and used for pushing the rock drilling machine to move.
Compared with the prior art, the invention designs the inclined shaft TBM suitable for small curve turning aiming at different requirements of reverse shaft construction, and particularly, the inclined shaft TBM suitable for small curve turning comprises a variable-diameter cutter head, a variable-diameter front shield and a main propelling mechanism, wherein the cutter head is used for excavating a tunnel; the front shield is connected with the cutter head and can support the tunnel wall, so that supporting force is provided for the TBM to ensure the stability of the TBM; the main propulsion mechanism is connected with the front shield and used for driving the front shield to move so as to control the tunneling direction of the cutter head. That is to say, the inclined shaft TBM suitable for the small curve turning drives the front shield to move through the main propulsion mechanism, so that the tunneling direction of the cutter head can be adjusted to meet the turning requirement when the tunneling direction needs to be changed, and meanwhile, the cutter head and the front shield are both of variable-diameter structures, so that when the TBM is subjected to ultra-small-radius turning, the ultra-small-radius turning can be adapted through the variable-diameter operation of the cutter head and the front shield. Compared with the traditional heading machine which cannot adopt the heading machine technology to carry out reverse tunnel construction, the inclined shaft TBM suitable for small curve turning can adapt to the heading construction of reducing, small turning, a positive inclined shaft and a reverse inclined shaft.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a slant well TBM suitable for a small curve turning according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the cutter head of FIG. 1;
FIG. 3 is a schematic structural diagram of the anterior shield of FIG. 1;
FIG. 4 is a schematic structural view of the auxiliary tightening mechanism of FIG. 1;
FIG. 5 is a schematic view of the assembly of the resilient anti-skid assembly with the shoe;
FIG. 6 is a schematic diagram of the configuration of the system of the drill-pipe rig of FIG. 1;
FIG. 7 is a schematic structural view of a slag tapping system and a water cooling system of the rear mating system in FIG. 1;
FIG. 8 is a schematic structural diagram of a variable voltage power supply system and an air supply system of the rear mating system in FIG. 1;
FIG. 9 is a schematic diagram of a vertical curve extra-small turning radius raise boring by the inclined shaft TBM suitable for small curve turning provided by the invention;
fig. 10 is a schematic diagram of the variable diameter of the slant hole TBM suitable for a small curve turning according to the embodiment of the present invention.
Wherein:
1-cutter head, 101-cutter head middle block, 102-cutter head connecting block, 103-middle transition block, 104-edge block, 105-cutter, 2-front shield, 201-first shield, 202-first oil cylinder, 203-second shield, 204-second oil cylinder, 205-third shield, 206-third oil cylinder, 207-fourth shield, 208-fourth oil cylinder, 209-center connecting block, 3-main drive, 4-main propulsion mechanism, 5-tightening shield, 6-anchor rod drilling machine system, 601-circular track, 602-rock drilling machine, 603-hydraulic propeller, 7-hinged oil cylinder, 8-auxiliary tightening mechanism, 801-slag chute channel, 802-tightening shoe, 803-tightening thrust mechanism, 804-elastic anti-slip component, 9-rear matching system, 901-slag discharging system, 9011-first slag discharging device, 9012-second slag discharging device, 902-water cooling system, 903-variable voltage power supply system, 904-air supply system and 10-spraying mixing system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the inclined shaft TBM suitable for small curve turning, which can realize the tunneling construction of variable diameter, small turning, a positive inclined shaft and a reverse inclined shaft and can solve the problems of ultra-small radius turning, large-gradient inclined shaft slag tapping, anti-sliding and the like in the reverse construction process.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.
Referring to fig. 1 to 10, fig. 1 is a schematic structural diagram of a slant entry TBM suitable for a small curve turning according to an embodiment of the present invention; FIG. 2 is a schematic structural view of the cutter head of FIG. 1; FIG. 3 is a schematic structural diagram of the anterior shield of FIG. 1; FIG. 4 is a schematic structural view of the auxiliary tightening mechanism of FIG. 1; FIG. 5 is a schematic view of the assembly of the resilient anti-skid assembly with the shoe; FIG. 6 is a schematic diagram of the configuration of the system of the drill-pipe rig of FIG. 1; FIG. 7 is a schematic structural view of a slag tapping system and a water cooling system of the rear mating system in FIG. 1; FIG. 8 is a schematic structural diagram of a variable voltage power supply system and an air supply system of the rear mating system in FIG. 1; FIG. 9 is a schematic diagram of a vertical curve extra-small turning radius raise boring by the inclined shaft TBM suitable for small curve turning provided by the invention; fig. 10 is a schematic diagram of the variable diameter of the slant hole TBM suitable for a small curve turning according to the embodiment of the present invention.
The inclined shaft TBM (the TBM is a full-section tunnel boring machine) suitable for small curve turning provided by the embodiment of the invention comprises a
Of course, according to actual needs, the
In addition, the
Of course, the number of the main propulsion cylinders can be increased or decreased according to the size of the heading machine and the engineering geological conditions so as to improve the economic benefit and the geological adaptability, and the main propulsion cylinders are not particularly limited in this document. The main propulsion oil cylinder can also be provided with various sensors to monitor and feed back parameters such as the angle, the stroke, the thrust, the propulsion speed and the like of the oil cylinder in real time.
Therefore, the inclined shaft TBM suitable for small curve turning drives the
Further, the
Of course, according to actual needs, the cutterhead
Therefore, the
In the embodiment of the invention, the
Specifically, the
Thus, the combined type
It should be noted that the shape of the shell of the
The TBM diameter-changing step in the hole comprises the following steps: the
In order to optimize the embodiment, the
Specifically, the number of the
Preferably, at least one group of tightening thrust mechanisms 803 for driving the supporting
In addition, an anti-slip component for improving the friction force is arranged outside any supporting
Above-mentioned prop
In order to improve the stability of the heading machine in the construction process of a reverse inclined shaft, at least two
The inclined shaft TBM suitable for small curve turning is further provided with an anchor rod
The rear supporting
Of course, according to actual needs, the first slag discharging device 9011 may be specifically configured as a continuous belt conveyor, and the second slag discharging device 9012 may be specifically configured as a slag belt conveyor for slag discharging in an inclined shaft section, and in terms of installation form, the continuous belt conveyor reserves an installation space for the slag belt conveyor for slag discharging in a reverse inclined shaft section; the slag-transferring belt conveyor starts from the tail part of the heading
In addition, the slag discharging system 901 has the capability of quickly switching from a flat tunnel mode to a reverse inclined shaft mode, and two sets of slag discharging system devices can work simultaneously in the process of turning a vertical curve; preferably, the slag tapping system 901 further has a manual installation mode and an automatic pavement switching mode, and the automatic pavement switching mode is selected to realize the quick and quick opening and closing of the belt conveyor function under the condition that a small amount of inner space of the heading machine is occupied.
On the basis, the inclined shaft TBM suitable for small curve turning can realize a step-by-step changing mode so as to ensure that at least two sets of supporting devices of the heading machine play a role in the step changing process, and the safety during step changing is effectively improved while the construction efficiency is considered.
The step-by-step changing mode can be set as follows: in the normal tunneling stage of the tunneling machine, the
The realization mode of the inclined shaft is as follows: firstly, the TBM turns downwards, the specific mode is that the
The realization mode of the reverse inclined shaft is as follows: firstly, the TBM turns upwards, the
It is emphasized that the inclined shaft TBM suitable for small curve turning provided by the application can realize continuous switching tunneling of a flat tunnel, a positive inclined shaft and a reverse inclined shaft.
Compared with the prior art, the inclined shaft TBM applicable to small curve turning provided by the application has the following advantages:
the arrangement of the variable-
secondly, continuous tunneling construction of a flat tunnel, a reverse inclined shaft and a forward inclined shaft can be realized;
thirdly, due to the specific small turning structure design, the turning radius of the tunneling machine can be automatically controlled, and the turning radius in the vertical direction can be smaller than 30 m;
fourthly, three sets of mechanical supporting devices are provided, and the safety of the construction of the large-inclination-angle reverse inclined shaft can be guaranteed by an original step-by-step changing mode and the cooperation of the elastic anti-slip component and the anchor rod concrete supporting piece;
fifthly, slag tapping and supporting are designed in a targeted manner, so that the construction requirement of the reverse inclined shaft is met; the two sets of independent slag discharging devices can ensure the stability and continuity of slag discharging in the flat tunnel mode and the reverse inclined shaft mode;
sixthly, the anti-slip and anti-overturning design is pertinently adopted, so that the construction safety coefficient of the reverse inclined shaft is further improved;
seventhly, intelligent roofbolter control system and spout the system of mixing effectively reduce tunnel construction manpower requirement.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The present invention provides a kind of inclined shaft TBM suitable for small curve turning. The principles and embodiments of the present invention are explained herein using specific examples, which are provided only to help understand the concepts of the present invention and the core concepts thereof. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
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