Tunnel inspection well with drainage and anti-floating functions

Abstract

The invention discloses a tunnel inspection well with draining and floating resisting functions. The tunnel inspection well comprises an inverted arch filling layer, a tunnel inverted arch and a center draining pipe arranged in the inverted arch filling layer. An inspection well body is formed in the inverted arch filling layer. The inspection well body passes through the tunnel inverted arch in depth. Draining holes are reserved in an inspection well bottom plate of the inspection well body. Overflow pipes are inserted into the draining holes. The side wall of the inspection well body communicates with the center draining pipe. The tunnel inspection well is applicable to railway tunnel engineering in water-rich sections such as faults and karst development sections, the situation that due to the fact that base water pressure in a tunnel is too high, a ballastless track arches up can be effectively prevented, and safe operation of a railway is guaranteed. The tunnel inspection well has the beneficial effects of simple construction, small investment and the like, the application prospect is wide, construction operation is very simple, and the construction cost is extremely low.

Description

technical field [0001] The invention belongs to a tunnel inspection well, in particular to a tunnel inspection well with the functions of water discharge and anti-floating. Background technique [0002] At present, my country is the country with the largest scale and the largest number of tunnel projects, the most complex geological conditions and structural forms, and the fastest development of construction technology in the world. For railway tunnels, most of them adopt the drainage method of setting a central water pipe in the inverted arch filling layer as the main drainage channel, and at the same time set a central inspection well at a certain distance to facilitate dredging and dredging the central water pipe to meet the requirements of the tunnel drainage system. Maintainable" requirements. In addition, with the continuous development of high-speed railways, in order to meet the high-speed operation requirements of trains, ballastless tracks are generally laid in hi...

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Problems solved by technology

Compared with the traditional ballasted track, although the ballastless track can reduce maintenance, reduce dust, and beautify the environment, it also requires higher stability of the tunnel bottom structure

[0003] However, in recent years, in the water-rich areas such as faults and karst development in the railway tunnels in operation, due to high water pressure, the phenomenon of ballastless track arching has occurred frequently; in addition, due to problems such as tunnel construction technology and construction quality, tunnels It is common that the bottom of the inverted arch is not dense, the filling of the inverted arch is done in layers, and the waterproof effect of the construction joints of the inverted arch is not ideal. Under the action of pressure, the track slab is raised, which has a great impact on the safe operation of the railway

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