Novel jacking pipe intersegment overhaul well

Abstract

The invention discloses a novel jacking pipe intersegment overhaul well, comprising a jacking pipe body, an overhaul well body and an overhaul well seat, wherein the jacking pipe body comprises a reinforced concrete jacking pipe and a jacking pipe steel plate wrapping the outer surface of the reinforced concrete jacking pipe; a preformed hole is formed in the jacking pipe body; the overhaul well body comprises a reinforced concrete shaft and a shaft steel plate wrapping the outer surface of the reinforced concrete shaft; the bottom end of the overhaul well body is connected vertically with the preformed hole in the jacking pipe body; the joint of the shaft steel plate and the jacking pipe steel plate is welded and fixed. During construction of the overhaul well body, the shaft steel plate can be directly pressed into a soil layer to be in contact with the jacking pipe body below, the shaft steel plate can be used as a soil retaining structure during the construction stage of the overhaul well body, and can also be used as an outer template and an outer side force component of the reinforced concrete shaft, the way that a foundation pit needs to be excavated and the overhaul well is then constructed for the traditional ordinary overhaul well is abandoned, the problems of excavation and support of the overhaul well during the construction phase are effectively solved, and the problem of difficulty in construction due to the existence of the jacking pipe is solved.

Description

technical field [0001] The invention relates to the technical field of underground pipeline inspection wells. Background technique [0002] With the development of large-scale urbanization in China, the density of urban underground pipe network construction is increasing. However, due to factors such as land acquisition and demolition, traffic evacuation or surrounding environment, the traditional slotting and buried pipe construction method is subject to more and more restrictions on use. , as a main method of trenchless construction, mechanical pipe jacking construction is more and more widely used in urban pipe network engineering. [0003] When using reinforced concrete pipe jacking construction, because the length between the pipe jacking wells is too long or branch pipes need to be connected, we often excavate construction inspection wells between the pipe jacking wells after the pipe jacking construction is completed. The buried depth of pipelines for pipe jack...

AI Technical Summary

Problems solved by technology

The buried depth of pipelines for pipe jacking construction is generally deep, and a support structure needs to be implemented when excavating inspection wells. However, due to the existence of constructed pipe jacking, the support construction of inspection wells is relatively difficult, and the precipitation in the pit often causes existing pipe jacking Subsidence, surrounding ground subsidence and other adverse consequences

In addition, due to the existence of the pipe jacking that has been constructed, it is very difficult to dig out the soil below the pipe jacking, and the quality of the concrete pouring of the bottom plate of the inspection well is often not guaranteed, and it is easy to cause the pipe joints to retract, loosen and leak when the pipe jacking is broken. adverse consequences of

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