Construction method for connecting new pipe jacking wells to old ones

A construction method and technology of old tube wells, applied in construction, artificial islands, water conservancy projects, etc., can solve the problems of high consumption of manpower and material resources, large amount of excavated soil, and long construction period, so as to save labor, have little impact on ground traffic, and shorten the construction period. short effect

Active Publication Date: 2017-03-29
SHANGHAI ERSHIYE CONSTR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has a large amount of excavated soil, a long construction period, a lot of manpower and material resources, and has a great impact on the surrounding pipelines and structures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention is further illustrated below by specific examples.

[0019] A construction method for connecting a newly built pipe jacking well with an old pipe well; it includes connecting steel pipes, and also includes the following steps:

[0020] Step 1. Newly build the pipe jacking well structure construction, and reserve the installation port for connecting steel pipes according to the design requirements;

[0021] Step 2. Use high-pressure jet grouting piles and compaction grouting on both sides of the interface between the old tube well and the newly built tube well and the connecting pipe; use ordinary portland cement and water glass mixed grout to pass around the interface between the tube well and the connecting steel pipe The grouting pipe is used to reinforce the soil by layered grouting;

[0022] Step 3. After the construction of the new pipe jacking and the new pipe jacking well structure is completed, according to the size of the hole reserved fo...

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PUM

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Abstract

The invention relates to the field of underground pipeline construction, in particular to a newly-built top pipe well and old pipe well connecting construction method. The method includes that a connecting steel pipe is arranged. The method is characterized by including the following steps: constructing structure of a newly-built top pipe well, and reserving a connecting steel pipe mounting port according to design requirements; reinforcing two sides of port areas where an old pipe well and the newly-built pipe well are connected with a connecting pipeline and four sides of ports where the pipe wells are connected with the connecting steel pipe, chiseling to remove a retaining structure to 70% of the outer wall of the old well according to size of a reserved hole of the newly-built top pipe well after construction of a new top pipe and the top pipe well structure is completed fully, and connecting the connecting steel pipe with the new pipe well and the old pipe well according to the design requirements; pouring concrete in the outer layer of the connecting steel pipe; connecting the connecting steel pipe into the old well, and cutting well walls underwater at a connecting hole mark until the connecting steel pipe is completely communicated with the new well and the old well. By adopting the above design, the newly-built top pipe well and old pipe well connecting construction method is quick in construction progress, low in disturbance of surrounding strata, investment saving and labor saving.

Description

technical field [0001] The invention relates to the field of underground pipeline construction, in particular to the field of docking of cast-in-situ reinforced concrete caisson structures. Background technique [0002] Generally, when the newly-built pipe jacking well is connected with the old pipe well, slotting and buried pipes are used for construction. The slotted and buried pipes need to be surrounded by protective piles first, and then earthwork excavation is carried out. This process has a large amount of excavated soil, a long construction period, a lot of manpower and material resources, and has a great impact on the surrounding pipelines and structures. Contents of the invention [0003] The object of the present invention is to provide a construction method for connecting a new pipe-jacking well and an old pipe well with fast construction progress, less disturbance to surrounding strata, and reduced ground excavation area. [0004] In order to achieve the abov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/045
Inventor 郝鑫赵建立
Owner SHANGHAI ERSHIYE CONSTR CO LTD
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