Drainage device and method for tunnel and underground structure

Abstract

The invention provides a drainage device and method for a tunnel and an underground structure. The drainage device comprises an outer sleeve pipe penetrating through a tunnel lining or the undergroundstructure when used, a core pipe and a drainage structure control unit placed in the core pipe, wherein the lower end of the core pipe extends into the upper end of the outer sleeve pipe, and the core pipe is in threaded connection with the outer sleeve pipe. A plurality of second water release holes are formed in the outer wall of the lower portion of the outer sleeve pipe; a bearing part is arranged at the lower end of the core pipe, and a plurality of first water release holes are formed in the outer wall of the lower portion of the core pipe; and the drainage structure control unit comprises a stabilizing block placed in the core pipe and located on the bearing part, a guiding sleeve, a guiding rod, a connecting piece, a sealing piece, a spring, a top cover and one or more transversedrainage pipes, wherein the lower end of the guiding sleeve is fixedly connected with the upper end of the stabilizing block; the lower end of the guiding rod extends into the guiding sleeve, and theguiding rod is in sliding fit with the guiding sleeve; the connecting piece is fixedly connected with the upper end of the guiding rod; the sealing piece is mounted at the upper end of the connectingpiece and is in liquid sealing fit with the inner wall of the core pipe; the spring is mounted on the guiding sleeve in a sleeving mode, and the two ends of the spring are fixedly connected with the stabilizing block and the connecting piece correspondingly; and the upper end of the core pipe is closed by the top cover.

Description

technical field [0001] The invention relates to the technical field of tunnels and underground engineering equipment, in particular to a drainage device and a drainage method for tunnels and underground structures. Background technique [0002] With the great development of my country's transportation and municipal engineering construction, the construction of tunnels, subways and municipal underground projects is increasing day by day. Due to the influence of geological conditions on tunnels and underground projects, the occurrence conditions of groundwater are not the same. In addition to effective waterproof measures, drainage and dredging should be carried out to reduce the seepage pressure of catchment water on lining or underground structure concrete. Relevant studies have shown that after the tunnel inverted arch or underground structure is poured, the water pressure behind the inverted arch lining and the underground structure presents a gradual increase trend. Under ...

AI Technical Summary

Problems solved by technology

Relevant studies have shown that after the tunnel inverted arch or underground structure is poured, the water pressure behind the inverted arch lining and the underground structure presents a gradual increase trend. Under the influence of catchment pressure, the inverted arch or underground structure will float up, which greatly affects the line. Operational and underground engineering use safety

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