Pre-buried circular ring draining well closing manner

Abstract

The invention relates to a pre-buried circular ring draining well closing manner which comprises a blind plate and a pre-buried circular ring. The pre-buried circular ring is arranged on the inner wall of a draining well, the blind plate is arranged on the pre-buried circular ring, and the pre-buried circular ring is fixed to a non-fine concrete pipe. The outer wall of the draining well is sequentially provided with a foundation slab, a waterproof roll, a base plate cushion layer and basement original soil from top to bottom. The blind plate and a groove of the pre-buried circular ring are subject to full welding. The pre-buried circular ring is fixedly welded to the non-fine concrete pipe. Concrete is poured on the upper portion of the blind plate. A switch valve used for draining well dewatering and drainage during and after sealing is arranged in the middle of the blind plate. The switch valve on the blind plate is in a closing state. The blind plate is located on the foundation slab layer. The pre-buried circular ring draining well closing manner is simple in structure and convenient to construct; and the pre-buried circular ring and the periphery of the blind plate are subject to full welding, meanwhile, the special structure of the blind plate is used for doing draining well dewatering work, and the aim of doing welding operation on the blind plate and the circular ring in the dry environment is achieved.

Description

technical field [0001] The invention relates to the field of sealing methods for draining wells, in particular to a sealing method for draining wells with a pre-embedded ring. Background technique [0002] With the rapid development of my country's economy, the subway industry is changing with each passing day. In my country's 12th Five-Year Plan, the subway is gradually moving from large cities to medium-sized cities. The construction environment of subways is becoming more and more complex, and subway stations have been constructed in various strata. Before the excavation of the deep foundation pit of the subway station, the foundation pit precipitation is usually used to consolidate the soil, so as to improve the strength of the soil in the pit and reduce the deformation of the pit bottom and the surrounding structure. [0003] Drainage well is also a kind of dewatering well. Groundwater drainage is an unavoidable requirement in many underground excavation projects and op...

AI Technical Summary

Problems solved by technology

Conventional closed dewatering wells have the disadvantages of prefabricated steel casing and flanges, which will be corroded under the long-term erosion of groundwater, and groundwater may leak into the basement along the prefabricated steel casing

Images