Submersed type inspection well construction method

Abstract

The invention discloses a submersed type inspection well which comprises a well cover above the ground as well as a shaft and a well body structure below the well cover, wherein the traditional drainage pipe is arranged below the shaft, a foundation is arranged between the lower end of the shaft and the drainage pipe, and the lower end of the shaft, the upper end of the foundation and the pipe are poured into a whole; the diameter of the foundation is larger than the outer diameter of the shaft, and the bottom end of the foundation is located below the sheath of the traditional drainage pipe;and the bottom end of the foundation is inwards extended below the traditional drainage pipe. The invention also discloses a construction method for realizing the inspection well, which comprises thefollowing construction stages: (1) placing the inspection well; (2) submersing, joining and measuring the shaft; (3) manufacturing the foundation of the inspection well and communicating the shaft with the traditional drainage pipe; and (4) mounting a shaft cover plate and a ladder. By adopting the structure and the method of the invention, the inspection well is conveniently manufactured by adopting a submersed type construction method so as to be beneficial to carrying out long-distance jacking pipe construction and developing novel prefabricated inspection well structures and convenient for carrying out pipe engineering construction in downtown areas without excavating.

Description

technical field [0001] The invention relates to a construction method of an immersed tube inspection well. Background technique [0002] Pipe jacking construction is the main construction method of trenchless underground pipeline construction in urban drainage projects. It does not need to excavate the surface layer, and it can cross roads, railways, rivers, ground buildings, underground structures and various underground pipelines. It has the advantages of no pollution to the environment, no impact on traffic, little damage to the stratum structure, safe and reliable construction, short cycle, no need to transport and pile up miscellaneous soil, low cost, and significant social and economic benefits. In the past, pipe jacking was used as a special construction method, and it was generally not used lightly unless it was a last resort. Therefore, pipe jacking is often used as a special construction method for crossing railways, highways, rivers, etc., and the construction di...

AI Technical Summary

Problems solved by technology

[0005] If the mechanical pipe jacking project is designed according to the requirements of the outdoor drainage design code (GB50201-2005), according to the above table, the longest distance of the pipe jacking cannot exceed 120 meters, which will inevitably increase the number of working wells or receiving wells and increase the pipe jacking project The cost hinders the development of pipe jacking construction technology

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