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Pipe jacking construction method

A construction method and pipe jacking technology, which is applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc. It can solve the problems of pipeline floating and the position of tool pipe is difficult to determine, so as to avoid pipeline floating and simplify operation procedures , maintain a stable effect

Active Publication Date: 2015-03-25
鸿昊建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the present invention is to provide a method to solve the problems of pipeline floating and tool pipe position being difficult to determine under the condition of low buried depth.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0058] The pipe diameter of a sewage pipe project is 1.4mm, the length is 320m, the shallowest buried depth is 2.1m, and the slope is 0.8%, which makes the construction difficult. Geological data show that the soil layer above the pipeline is silty clay, the soil layer below the pipeline is clay or muddy soil, and the soil layer jacked into the pipeline is clay.

[0059] The construction steps of this project include:

[0060] (1) Measurement and setting-out

[0061] Arrange temporary benchmarks and pipeline axis control piles, and set central piles at inspection wells.

[0062] (2) Construction of working well

[0063] Install reinforced concrete prefabricated slabs in the slots reserved at the top of the working well, and the slots must be filled with grout. Build a brick wall at the reserved opening of the prefabricated slab. All bricks must be soaked in water. During the masonry, they should be fully paved and crowded, and built up and down. The thickness of the horizon...

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Abstract

The invention discloses a pipe jacking construction method. The pipe jacking construction method is characterized by comprising the steps that firstly, surveying and setting out are carried out; secondly, working well construction is carried out; thirdly, assembling type back wall installation is carried out; fourthly, a guide rail is installed; fifthly, a main jacking jack is installed; sixthly, a pipe jacking auxiliary device is installed; seventhly, a pipeline is jacked; eighthly, deviation is rectified, and mould weights are stacked at the front end of a water draining pipe to increase the weight of a pipe section; ninthly, coming out of a hole is carried out. According to the pipe jacking construction method, the horizontal deviation and high-level deviation of a pipe jacking axis are effectively controlled, the stability of an excavation face can be effectively kept, the disturbance on the soil body around a pipe body is small, and the pipeline floating is avoided.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to a pipe jacking construction method. Background technique [0002] The pipeline passes through the weak soil layer. When the bearing capacity of the soil layer is poor, the compressibility is high, and the soil layer is prone to compression deformation when it is stressed. It is not easy to form a correction reaction force during the pipe jacking correction, which will have an adverse effect on the pipe jacking correction. In the case of low buried depth, due to the low pressure of the overlying soil layer, it is easy to cause the problem of pipeline floating during the pipe jacking process, and if the phenomenon of pipeline floating occurs, it is difficult to correct the deviation downward. When the pipeline slope exceeds 0.5%, the level deviation and elevation deviation of the tools required for pipe jacking will be difficult to control. The method has been improved. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/028
CPCF16L1/028
Inventor 朱奎
Owner 鸿昊建设集团有限公司
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