Box culvert underwater access construction method

Abstract

The invention discloses a box culvert underwater access construction method comprising the following steps: firstly arranging a water lifting barrel on a top preformed hole of a novel box culvert; secondly building a work platform outside and above the water lifting barrel, and mounting a suspender and a suspension cable above an original box culvert to-be holed position; mounting drilling equipment on the work platform and arranging a plurality of through holes on the top of the original box culvert; mounting a cutter and a guide device on the work platform, using a metal chain to penetrate every two through holes, and then the cutter drives the metal chain to be led by the guide device for cutting; finally hanging and removing cut concrete blocks, dismounting the work platform and the water lifting barrel, and mounting a pressure cover plate on the top of the novel box culvert. The box culvert underwater access construction method is low in noises, small in pollution, high in mechanization level, less in operation people, can perform construction of connecting the novel box culvert with the original box culvert with high efficiency while ensuring normal discharge of sewage, thus practically satisfying practical application demands.

Description

technical field [0001] The invention relates to the field of drainage engineering, in particular to a construction method for underwater connection of a box culvert. Background technique [0002] With the development of the economy, the acceleration of urbanization, the increase of urban population and land area, the sewage pipe network continues to expand, and the municipal sewage mains in large and medium-sized cities mostly use box culverts or pipe culverts. The ensuing problems are , it is usually necessary to connect the newly established branch line culvert (ie the new box culvert) to the early original box culvert main pipe (ie the original box culvert). However, for the urban pipe network that has already adopted the combination of rainwater and sewage, if the water stop operation connection method is adopted, it will directly lead to short-term interruption of sewage discharge, and at the same time, the temporary release of sewage into the river will inevitably caus...

AI Technical Summary

Problems solved by technology

However, for the urban pipe network that has already adopted the combination of rain and sewage, if the water stop operation connection method is adopted, it will directly lead to short-term sewage discharge interruption, and at the same time, the sewage discharged temporarily into the river will inevitably cause serious pollution of the river.

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