Jacking pipe construction method for trimming deviation by reverse jacking of steel pipe casing

A steel pipe sleeve and jacking technology, which is used in pipeline laying and maintenance, pipes/pipe joints/fittings, pipes, etc., can solve the problems of complicated deviation correction procedures, high construction costs, and pipeline earthwork collapse, etc., to increase the overall strength. and damage resistance, reduce construction costs and material costs, and save construction costs

Active Publication Date: 2020-09-01
GUANGDONG DACHENG CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the actual construction process, the pipe jacking is prone to extension errors, such as the collapse of the earth below the pipe, which makes it difficult for the pipe jacking construction to be shaped according to the design axis
Especially when the pipe jacking deviation reaches tens of centimeters and the position of the pipe jacking deviation is relatively close to the receiving well, the tra

Method used

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  • Jacking pipe construction method for trimming deviation by reverse jacking of steel pipe casing
  • Jacking pipe construction method for trimming deviation by reverse jacking of steel pipe casing
  • Jacking pipe construction method for trimming deviation by reverse jacking of steel pipe casing

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Experimental program
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Embodiment 1

[0043] Such as Figure 1 to Figure 2 As shown, the reverse jacking steel pipe sleeve trimming offset pipe jacking construction method disclosed by the present invention includes the following steps:

[0044] Step 1: installing jacking equipment 13 in the receiving well 1 and prefabricating a steel casing 11 with a diameter larger than the concrete pipe 21;

[0045] Step 2: In the receiving well 1, according to the conventional initial pipe jacking method, use the jacking equipment 13 to push the steel casing 11 into the soil according to the originally designed pipe jacking axis until the concrete pipe 21 that needs to be corrected is completely wrapped, A total station can be used to determine whether the jacking axis of the steel casing 11 coincides with or is lower than the jacking axis of the original concrete pipe 21;

[0046] Step 3: Clean up the earth in the steel casing 11 until the machine head 22 is exposed;

[0047] Step 4: Release the connection between the inside ...

Embodiment 2

[0057] The difference between this embodiment and Embodiment 1 is that the inner peripheral surface of the steel pipe unit 12 is slidingly connected with a plurality of support blocks 121 around the axis of the steel pipe unit 12, and the plurality of support blocks 121 on any steel pipe unit 12 are along the direction of the steel pipe unit 12. The cells 12 are arranged at equal intervals in the axial direction, and the distance between adjacent support blocks 121 is smaller than the length of the concrete pipe 21 . The inner peripheral surface of the steel pipe body 12 is provided with an arc-shaped chute 122 along the axis of the steel pipe body 12. The chute 122 is a T-shaped groove, and the support block 121 is fixed with a T-shaped block facing the arc surface of the steel pipe body 12. , the T-shaped block engages and slides in the T-shaped groove, so as to realize the sliding connection between the support block 121 and the steel pipe unit 12 .

[0058] The cross secti...

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Abstract

The invention relates to a jacking pipe construction method for trimming deviation by reverse jacking of a steel pipe casing. A construction person can clean soil in a steel casing pipe from one sideof a receiving well and enters the steel casing pipe for dismounting a machine head and dismounting a deviated concrete pipe, through the steel casing pipe, the constructor is protected, when the machine head and the concrete pipe are dismounted, the danger caused by collapse of the construction position is not prone to happening, a new concrete pipe is jacked from the receiving well to be connected with an original concrete pipe in a seam abut joint manner, according to an existing axis precision, burying is continuously carried out until the concrete pipe extends out of the receiving well, the position between the steel casing pipe and the concrete pipe is filled with the concrete, the concrete pipe is supported, construction of the last segment of jacking pipe close to the receiving well is finished, a jacking pipe system is adopted in the construction method for finishing pipeline deviation rectifying, the damage to the environment due to the fact that traditional jacking pipe deviation rectifying construction adopts a method of ground excavating for deviation rectifying can be avoided, construction cost of earth excavation and site recovering can be saved, construction operation is easy, the process saves time, and the method is efficient and safe.

Description

technical field [0001] The invention relates to the technical field of pipe jacking construction, in particular to a construction method of reverse jacking steel pipe sleeve trimming and offset pipe jacking. Background technique [0002] The current pipe jacking construction method is a non-excavation construction method, through which the pipeline can be buried with little or no excavation. When the pipe jacking construction method is working, the jacking force generated by the pipe jacking machine is used to overcome the friction between the pipe and the surrounding soil, so as to push the pipe into the soil layer according to the designed slope and transport the earth away. Push the tool pipe or machine head from the working pit through the soil layer to the receiving pit for hoisting. With the work of the pipe jacking machine, the pipe will pass through the soil layer from the working well and enter the receiving well. The pipeline follows the tool pipe or machine head ...

Claims

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Application Information

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IPC IPC(8): F16L1/036F16L1/06F16L9/153F16L55/10
CPCF16L1/036F16L1/06F16L9/153F16L55/10
Inventor 陈日龙焦伟明陈源
Owner GUANGDONG DACHENG CONSTR GRP
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