Rectangular working well in water-rich stratum and preinstalling with pipe-jacking door opening and sliding-moving type rear-leaning wall and construction method of rectangular working well

Abstract

The invention relates to a rectangular working well in a water-rich stratum and preinstalling with a pipe-jacking door opening and a sliding-moving type rear-leaning wall and a construction method ofthe rectangular working well. The construction method specifically comprises the following steps that (1) functional requirement design of the rectangular pipe-jacking working well is conduced; (2) maintenance structure open caisson construction of the rectangular pipe-jacking working well is conducted; (3) temporary limb protective structure construction is conducted; (4) in-well earth excavationis conducted; (5) bottom sealing of the rectangular pipe-jacking working well is conducted, and a sliding-moving type rail, a pulling ring and a rear-leaning wall anchoring part are pre-embedded; (6)a crawling well for entering into the rectangular pipe-jacking working well is mounted; (7) seam leakage treatment is conducted; (8) cave opening water-stop pressing plate mounting is conducted; (9)sliding-moving rear-leaning wall construction is conducted; (10) preinstalling door opening top sandwich concrete board wall lifting is conducted; and (11) pipe-jacking jacking construction is conducted. According to the rectangular working well and the construction method, the established structure system has the advantages that the functions are clear and definite, safety, fastness and convenience are achieved, and design is ingenious, especially, the problems that in the process of pipe-jacking in the water-rich stratum penetrating through the well wall, outburst of water and sand gushing safe hazards, and single well multi-direction pipe jacking construction are solved, and a novel method is provided for trenchless construction of underground pipelines such as hydraulic engineering, municipal administration, heating power and communication.

Description

technical field [0001] The invention belongs to the field of non-excavation construction and restoration of infrastructure facilities such as water conservancy, municipal administration, heat power, and communication, and specifically relates to providing a water-rich stratum pre-fabrication method for the non-excavation construction and restoration of underground pipelines such as water conservancy, municipal administration, heat power, and communication. A pipe jacking door opening, a sliding rectangular working well against a wall and its construction method are provided. Background technique [0002] The process of urbanization is accelerating, not only to build a large number of underground infrastructure facilities, but also to face the problem of rectification and upgrading of a large number of old underground pipelines, which makes the underground pipeline network of many urban roads very complicated, and road surface collapse and safety accidents caused by damage to ...

AI Technical Summary

Problems solved by technology

In addition, the most critical link is before the construction of pipe jacking in water-rich strata. Opening the door after opening is a very dangerous process. The risk of multiple openings in the pipe jacking well is higher

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