Rear-leaning-wall-integrated assembly type recoverable round working well and construction method thereof

Abstract

The invention relates to a design construction method for integration of an assembly type recoverable round top pipe working well and a back leaning wall. The design construction method comprises thesteps that (1) functional requirements of the round top pipe working well are designed; (2) support piles are constructed; (3) precast top beams are installed; (4) near-edge protection construction isconducted; (5) alternate construction of earth excavation, soil retaining plates and annular inner support beams is conducted; (6) a ladder entering the round top pipe working well is installed; (7)the round top pipe working well is sealed; (8) a rear leaning wall is constructed, and thus integration construction of the assembly type recoverable round top pipe working well and the rear leaning wall can be completed; and (9) after in-well operation is completed, the rear leaning wall, the soil retaining plates, the annular inner support beams, the precast top beams, the support piles and other working well components are recovered step by step in a reversed order in the backfilling process. The constructed structural system has the advantages that functions are clear, and safe, fast, assembly type recoverable and recyclable effects are achieved, and a novel method is provided for non-excavation construction of underground pipelines of hydraulic engineering, municipal administration, heating power, communications and the like.

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 back-to-wall integrated system for the non-excavation construction and restoration of underground pipelines such as water conservancy, municipal administration, heat power, and communication. A prefabricated recyclable circular working well and its construction method. 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 a large number of old underground pipelines over the service period, which makes the underground pipeline network of many urban roads very complicated, and road surface collapse and safety accidents frequently occur due to damage to underground pipelines . With traffic requirem...

AI Technical Summary

Problems solved by technology

At present, regarding the design and construction of working wells, receiving wells and relay rooms, caisson well technology or inverted well technology is still the main choice. Although it is safe and reliable, it has high cost, long construction period, difficulty in sinking, inclination and improper operation. Instability accidents, etc., especially in working wells, one or more sides may need to bear the jacking reaction force during the pipe jacking construction process, and the establishment of the back wall is also a very complicated process

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