阅读说明：本技术 一种用于地下管线铺设工程的顶管方向校准系统 (Pipe jacking direction calibration system for underground pipeline laying engineering ) 是由 姜坤 覃鹤 卢华 郁健 万廷荣 刘璇 张思斌 周雨婷 甘衡 于 2019-12-12 设计创作，主要内容包括：本发明提供一种用于地下管线铺设工程的顶管方向校准系统,包括经纬仪、标靶和激光发射器,地下顶管施工工程中在地面上挖掘有两个工作井,标杆竖立于两个工作井连线的中点处,经纬仪与标靶分列布置于工作井井口彼此相对的两侧边沿上,并使经纬仪与标靶之间的连线与两个工作井的连线共线,激光发射器安装于工作井以内并且其安装处相对于地面的深度与用于预设的地下管线铺设深度一致,同时激光发射器沿着水平方向发出的激光束与经纬仪与标靶之间的连线在同一个竖直平面以内。采用本发明的技术方案,解决了地下顶管施工工程中推进方向误差大,对接合拢精度低的问题,具有结构简单,便于携带,方便用户具体量化校正推进方向偏离程度等优点。(The invention provides a pipe jacking direction calibration system for underground pipeline laying engineering, which comprises a theodolite, a target and a laser transmitter, wherein two working wells are dug on the ground in the underground pipe jacking construction engineering, a marker post is erected at the midpoint of the connecting line of the two working wells, the theodolite and the target are respectively arranged on the two opposite side edges of the wellhead of the working wells in a row, the connecting line between the theodolite and the target is collinear with the connecting line of the two working wells, the laser transmitter is arranged in the working wells, the depth of the installation position relative to the ground is consistent with the preset underground pipeline laying depth, and meanwhile, a laser beam emitted by the laser transmitter along the horizontal direction is within the same vertical plane with the connecting line between the theodolite and the target. By adopting the technical scheme of the invention, the problems of large error of the advancing direction and low butt joint closure precision in the underground pipe jacking construction project are solved, and the invention has the advantages of simple structure, portability, convenience for a user to specifically and quantitatively correct the advancing direction deviation degree and the like.)

1. The utility model provides a push pipe direction calbiration system for pipeline lays engineering which characterized in that: including theodolite (7), mark target (8) and laser emitter (9), there are two working wells (10) in the excavation subaerial in the underground push pipe construction engineering, sighting rod (6) erects in the midpoint department of two working wells (10) line, theodolite (7) and mark target (8) branch row arrange in on the both sides border that working well (10) well head is relative each other to make line between theodolite (7) and mark target (8) and the line collineation between two working wells (10), laser emitter (9) install in within the working well and its installation department for the degree of depth on ground with be used for the predetermined underground pipeline to lay the degree of depth unanimously, simultaneously laser emitter (9) are along the laser beam that the horizontal direction sent and the line between theodolite (7) and mark target (8) within same vertical plane.

2. The pipe jacking direction calibration system for underground pipe laying work according to claim 1, wherein: the theodolite (7) is a total station with the specification and model number of GTS-211D.

3. The pipe jacking direction calibration system for underground pipe laying work according to claim 1, wherein: the target (8) is a level gauge with the specification model number 'DZS 3-1'.

4. The pipe jacking direction calibration system for underground pipe laying work according to claim 1, wherein: the laser emitter (9) is YBJ-300 in specification and model.

5. The pipe jacking direction calibration system for underground pipe laying work according to claim 1, wherein: the outline of the overlook projection of the working well (10) is rectangular.

6. The pipe jacking direction calibration system for underground pipe laying work according to claim 1, wherein: the pipe jacking direction calibration system for the underground pipeline laying engineering further comprises a laser receiver, and the laser receiver is contained in a finished pipe pushed into an underground soil body (13) in the construction process of the underground pipeline laying engineering.

7. The pipe jacking direction calibration system for underground pipeline laying work as claimed in claim 6, wherein: the laser receiver comprises a fixing strip (14) and a graduated scale (15), the fixing strip (14) is clamped inside the finished pipe, the center of the fixing strip coincides with the central axis of the finished pipe, and the graduated scale (15) is installed on the fixing strip (14) through a fastener.

8. The pipe jacking direction calibration system for underground pipe laying work according to claim 7, wherein: the fixing strip (14) is a wood strip made of wood.

9. The pipe jacking direction calibration system for underground pipe laying work according to claim 7, wherein: and scale marks with the graduation of 1mm are marked on the graduated scale (15).

10. The pipe jacking direction calibration system for underground pipe laying work according to claim 7, wherein: the graduated scale (15) is made of steel.

Technical Field

The invention relates to the technical field of constructional engineering, in particular to a pipe jacking direction calibration system for underground pipeline laying engineering.

Background

When underground pipelines are laid for construction, a pipe-jacking construction method is the preferred construction method, because the construction method has the greatest and best possibility of removing obstacles, in the prior art, the pipe-jacking construction method mostly adopts a one-way jacking construction method, along with the development of the society, the construction requirement of people on the underground pipelines is higher and higher, the laying distance of the underground pipelines is longer and longer, the surrounding environment at the laying position of the underground pipelines is more and more complex, in the pipe-jacking construction method, whether the push-jacking direction is correct or not determines the construction quality and precision of the finally laid underground pipelines, and in the prior art, a special pipe-jacking direction calibration system is not provided, so that the construction quality of the underground pipelines is influenced.

Disclosure of Invention

In order to solve the technical problem, the invention provides a pipe jacking direction calibration system for underground pipeline laying engineering.

The invention is realized by the following technical scheme.

The invention provides a pipe jacking direction calibration system for underground pipeline laying engineering, which comprises a theodolite, a target and a laser transmitter, wherein two working wells are dug in the underground pipe jacking construction engineering on the ground, the target rod is erected at the midpoint of the connecting line of the two working wells, the theodolite and the target are respectively arranged on the two opposite side edges of the wellhead of the working well in a row manner, the connecting line between the theodolite and the target is collinear with the connecting line between the two working wells, the laser transmitter is arranged in the working wells, the depth of the installation position of the laser transmitter relative to the ground is consistent with the preset underground pipeline laying depth, and meanwhile, a laser beam emitted by the laser transmitter along the horizontal direction and the connecting line between the theodolite and the target are in the same vertical plane.

The theodolite is a total station with the specification and model number of GTS-211D.

The target is a level gauge having a specification model number "DZS 3-1".

The laser emitter is YBJ-300 in specification and model.

The overlook projection outline of the working well is rectangular.

The pipe jacking direction calibration system for the underground pipeline laying engineering further comprises a laser receiver, and the laser receiver is contained in a finished pipe pushed into an underground soil body in the underground pipe jacking construction process.

The laser receiver comprises a fixing strip and a graduated scale, the fixing strip is clamped inside the finished product pipe along the horizontal direction, the center of the fixing strip is coincident with the central axis of the finished product pipe, and the graduated scale is installed on the fixing strip through a fastener.

The fixing strip is a wood strip made of wood.

The scale is marked with scale marks with the graduation of 1 mm.

The material of scale is steel.

The invention has the beneficial effects that: by adopting the technical scheme of the invention, the advancing direction of the finished pipe is calibrated before the finished pipe is advanced by adopting a calibration system consisting of the marker post, the theodolite, the target and the laser emitter, so that the finished pipe can be always advanced into the soil body along the preset linear direction, and the problems of large advancing direction error and low butt joint closing precision in the construction process of bidirectional jacking underground pipeline laying engineering are solved.

Drawings

FIG. 1 is a schematic view of the connection structure of the present invention;

FIG. 2 is a schematic view of the installation of the laser receiver of the present invention inside a jacking pipe;

FIG. 3 is a process flow chart of the underground pipe jacking construction method;

FIG. 4 is a schematic view of the butt-joint and closure of the finished pipe of the present invention;

fig. 5 is a schematic structural view of the concrete pouring device of the present invention.

In the figure: 1-finished pipe, 2-guide ring, 3-air compressor, 4-air storage tank, 5-feeding hopper, 6-marker rod, 7-theodolite, 8-target, 9-laser emitter, 10-working well, 12-consolidation body, 13-underground soil body, 14-fixing strip and 15-graduated scale.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

As shown in fig. 1 and 2, the invention provides a pipe jacking direction calibration system for underground pipeline laying engineering, which comprises a theodolite 7, a target 8 and a laser transmitter 9, wherein two working wells 10 are dug on the ground in the underground pipe jacking construction engineering, a marker post 6 is erected at the midpoint of the connecting line of the two working wells 10, the theodolite 7 and the target 8 are respectively arranged on the opposite side edges of the well mouths of the working wells 10, the connecting line between the theodolite 7 and the target 8 is collinear with the connecting line between the two working wells 10, the laser transmitter 9 is arranged in the working wells, the depth of the installation position relative to the ground is consistent with the preset underground pipeline laying depth, and meanwhile, a laser beam emitted by the laser transmitter 9 along the horizontal direction and the connecting line between the theodolite 7 and the target 8 are in the same vertical plane.

Further, it is preferable that the theodolite 7 is a total station of specification model "GTS-211D". Target 8 is a level gauge having the specification model "DZS 3-1". The laser transmitter 9 is of specification model number YBJ-300. The projected plan view profile of the work well 10 is rectangular.

In addition, the pipe jacking direction calibration system for the underground pipeline laying engineering further comprises a laser receiver, and the laser receiver is contained in a finished pipe pushed into an underground soil body 13 in the underground pipe jacking construction process.

Preferably, the laser receiver comprises a fixing bar 14 and a graduated scale 15, the fixing bar 14 is clamped inside the finished pipe and the center of the fixing bar is coincident with the central axis of the finished pipe, and the graduated scale 15 is installed on the fixing bar 14 through a fastener. Preferably, the fixing bar 14 is a wood bar made of wood. The cross-sectional dimension specification of the fixing strip 14 is as follows: length × width is 10cm × 5 cm. The scale 15 is marked with scale lines with 1mm graduation. The scale 15 is made of steel. Furthermore, the number of the fixing strips (14) is 2, the 2 fixing strips (14) are respectively clamped in the finished product pipe along the horizontal direction and the vertical direction, the number of the graduated scales (15) is the same as that of the fixing strips (14), and the graduated scales (15) are correspondingly arranged on the fixing strips (14) one by one. The fixing strips arranged along the horizontal direction and the vertical direction and the scales correspondingly installed are respectively arranged, so that a user can quantitatively master the deviation of the jacking direction of the finished pipe in the underground pipeline laying construction process so as to adjust the deviation in time.

By adopting the technical scheme of the invention, the advancing direction of the finished pipe is calibrated before the finished pipe is advanced by adopting a calibration system consisting of the marker post, the theodolite, the target and the laser emitter, so that the finished pipe can be always advanced into the soil body along the preset linear direction, and the problems of large advancing direction error and low butt joint closing precision in the construction process of bidirectional jacking underground pipeline laying engineering are solved.

In addition, as shown in fig. 3 and 4, the corresponding underground pipeline laying work can be constructed according to the following method:

the method comprises the following steps: excavating earth on the ground to form two working wells 10;

step two: providing two tool pipes 1 and a plurality of jacks, selecting one position with the same depth on the inner wall of one side of the two working wells 10 in the step one as an initial point, respectively installing a plurality of jacks around the initial point, respectively lowering the two tool pipes 1 into the working wells 10, and enabling the central axes of the tool pipes 1 to coincide with the initial point; further, in the second step, the number of jacks installed in the working well 10 is even. A plurality of jacks installed within the working well 10 are uniformly deployed in a circumferential array centered on an initiation point. And a cushion block is also arranged between the jack and the joint of the inner wall of the working well 10, and the cushion block is made of iron. The tail end of the piston rod of the jack is sleeved with a buffer gasket.

Step three: one end of the tool pipe 1 is fixedly connected with a steel guide ring 2, preferably, the guide ring 2 is in a cone cylinder shape with a large opening at the outer end and a small opening at the inner end, and the other end of the tool pipe 1 is applied with propelling force through the jack mounted in the second step, so that the two tool pipes 1 are oppositely propelled to the ground soil, and then the soil in the tool pipes 1 is excavated and moved out;

step four: providing two finished product pipes, and respectively lowering the two finished product pipes into the working well 10 to ensure that the central axis of the finished product pipes is coincided with the initial point;

step five: applying a propelling force to the finished product pipes through a jack, enabling the two finished product pipes and the tool pipe 1 to be propelled to the ground soil body in opposite directions, and then excavating and moving out the soil body in the finished product pipes; when the finished pipe or the tool pipe 1 is pushed by the jack in the third or fifth step, the depth of the finished pipe or the tool pipe 1 is 1.5 to 1.7m per pushing.

Step six: and repeating the fourth step to the fifth step until the guide ring 2 in the second step is in butt contact with the ground soil body.

In addition, the underground pipeline laying engineering further comprises the following steps:

after installing a plurality of jacks around the initial point in the second step, digging soil on the inner wall of the working well 10 on the other side opposite to the initial point to form a guide hole, and when the third step or the fifth step is performed, when the product pipe or the tool pipe 1 is pushed by the jacks, enabling the product pipe or the tool pipe 1 to pass through the guide hole. Preferably, the depth of the guide hole is 20-30 cm.

In addition, the underground pipeline laying engineering further comprises the following steps:

after the sixth step is completed, a steel plate is welded at the butt-joint contact part of the guide ring 2, so that the two guide rings 2 are connected into a whole through the steel plate. The steel plate thickness is preferably 10 mm. The tool tube 1 is a cylindrical shape cast with concrete.

Further, the underground pipe jacking construction engineering further comprises the following steps:

as shown in fig. 5, before the sixth step, a concrete pouring device is deployed outside the working well 10, after the sixth step is completed, concrete is poured at the joint of two adjacent finished pipes, so that the concrete enters between the outer wall of each finished pipe and the underground soil body through the gap at the joint of the two adjacent finished pipes, and the two adjacent finished pipes are connected into a whole after the concrete is solidified. Concrete placement device includes gas holder 4, magazine 5 and a plurality of air compressor machine 3, and 3 parallel connection of a plurality of air compressor machines are in 4 inputs of gas holder, and 4 outputs of gas holder insert magazine 5 with interior through the air supply pipe, and magazine 5 still is connected with the conveying pipe, and the conveying pipe stretches into instrument pipe 1 with interior. Preferably, the number of the air compressors 3 is 3. The output pressure of the air compressor 3 is 0.3 MPa.

In addition, the concrete is poured from bottom to top in a sectional pouring mode, and the concrete is poured next time after the concrete setting strength grade reaches an initial setting state after the concrete is poured between every two times, wherein the initial setting state refers to the state that the concrete setting strength reaches more than 70% of the strength of the preset complete setting state. The sectional pouring mode refers to pouring concrete for three times and three sections correspondingly, and the ratio of the coverage area of the three sections of poured concrete is 2:1: 2.

In addition, the underground pipe jacking construction engineering further comprises the following steps:

after the second step or the fourth step is finished, the advancing direction of the finished product pipe can be calibrated by using the pipe jacking direction calibration system provided by the invention, and the method specifically comprises the steps of erecting a marker post 6 at the middle point of the connecting line of two working wells 10, respectively arranging a theodolite 7 and a target 8 at the opposite side edges of the well mouths of the working wells 10, enabling the connecting line between the theodolite 7 and the target 8 to be collinear with the connecting line between the working wells 10 and the working wells 10, installing a laser emitter 9 at the initial point, enabling the laser beam emitted by the laser emitter 9 along the horizontal direction and the connecting line between the theodolite 7 and the target 8 to be in the same vertical plane, adjusting the advancing direction of the finished product pipe or the tool pipe 1 by adjusting the installation posture of a jack, and when the distance between the laser beam emitted by the laser emitter 9 and the central axis of the finished product pipe or the tool pipe 1 is less than 15mm, the pipe jacking direction calibration system provided by the invention can be dismantled and the next step is carried out.

After the construction method is adopted, the finished pipe 1 can be jacked into the underground soil body of the ground for a longer distance by adopting a construction mode of jacking the finished pipe in opposite directions, under the condition of the same propelling force, the conical groove of the guide ring is utilized, the requirement of laying construction of a long-distance underground pipeline is met, the steel guide ring is fixedly connected to the first section of tool pipe in the construction process, the finished pipe can be more stably propelled into the underground soil body under the guide of the guide ring, so that the finished pipe can be smoothly propelled into the underground soil body along a preset track and various obstacles in the underground soil body are removed, the propelling force can be uniformly acted on the finished pipe or the tool pipe by uniformly arranging the jacks around the initial point, the finished pipe is favorably and always propelled into the underground soil body along a straight line, the construction quality is improved, in addition, the invention also adopts a special concrete pouring device to pour concrete at the joint of the adjacent finished pipes in a sectional pouring mode, so that the two adjacent finished pipes are connected into a whole, the concrete is poured section by section successively, the concrete can be solidified to a required strength grade successively in a damp environment in the underground soil body, shrinkage cracks are avoided in the solidification process, the construction quality is improved, in addition, the advancing direction of the finished pipes is calibrated before the finished pipes are advanced by adopting a calibration system consisting of a marker post, a theodolite, a target and a laser emitter, so that the finished pipes can be always advanced to the underground soil body along a preset straight line direction, and the problems of large advancing direction error and low butt joint closure precision in a bidirectional jacking construction mode are solved.