Construction method for underground pipe rack to pass through river

Abstract

The invention provides a construction method for an underground pipe rack to pass through a river. The method comprises the following steps that paying off is conducted, and the pipe rack river passing section excavation line position is determined; beside the safety distance, a diversion channel connecting the upstream part and the downstream part of a pipe rack river passing section excavation line is excavated; a first cofferdam and a second cofferdam capable of intercepting water flow are arranged on the two sides of the pipe rack river passing section excavation line correspondingly, after the area between the first cofferdam and the second cofferdam is subjected to water lowering, excavation is conducted from one end of the pipe rack river passing section excavation line, the designed depth is excavated, a first foundation pit support is arranged on the side wall of the foundation pit, excavation continues till the final depth required by the pipe rack river passing section is reached, and a second foundation pit support is arranged on the side wall of the part, below the first foundation support, of the foundation pit; according to the normal sequence, the pipe rack river passing section is constructed, and after construction is finished, the pipe rack river passing section is subjected to waterproof treatment; and the foundation pit is subjected to backfill, the river is changed into an old way, and forward pipe rack construction continues. The technology is simple, excavation is conducted through a technology method, safety and guarantee are provided, cost is low, and the construction method is economical and reasonable.

Description

technical field [0001] The invention relates to the technical field of municipal construction, and more specifically, relates to a construction method for an underground pipe gallery crossing a river. Background technique [0002] The urban underground comprehensive pipeline gallery is a construction project that has gradually emerged in recent years by learning from foreign advanced urban underground pipeline management experience. Through the construction of underground comprehensive pipe gallery, all directly buried water (water supply, reclaimed water, sewage), electricity (electricity, telecommunications), heating (heating), gas, etc. are all introduced into the pipe gallery, and monitoring and other facilities are added to the pipe gallery. Ensure convenient maintenance in the later period. Newly added pipelines, there are many water systems in the city for landscape or for urban water supply, flood drainage, irrigation, and even many cities live by water and build by...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide a construction method for underground pipe corridors crossing rivers, so as to solve the current problems of high cost and limited construction of pipe corridors crossing rivers

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