Assembly type recoverable round working pit reserving door opening and construction method thereof

Abstract

The invention discloses an assembly type recoverable round working well reserving a door opening and a construction method thereof. The construction method comprises the following steps that (1) functional requirements of a round working well are designed; (2) support piles are constructed; (3) precast top beams are installed; (4) near-edge protection construction is conducted; (5) alternate construction of earth excavation, soil retaining plates and annular inner support beams is conducted, and the door opening is reserved synchronously; (6) a ladder entering the round working well is installed; (7) the bottom of the round working well is sealed, and thus construction of the assembly type recoverable round working well reserving the door opening can be completed; and (8) after in-well operation is completed, the soil retaining plates, the annular inner support beams, the top beams, the support piles and other working well components are recovered step by step in a reversed order in the backfilling process. The structural system of the constructed assembly type recoverable round working well reserving the door opening 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 and repair 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, communication, etc., and specifically relates to providing a door opening 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 pit and a construction method thereof. 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 requirements and th...

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.

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