Permanently sealed inclined shaft structures isolated from tunnels

Abstract

The invention relates to a permanent blocking inclined shaft structure isolated from a tunnel. An inclined shaft is a temporary project, supporting measures are weak, and therefore the inclined shaft is prone to collapsing, and underground water leaks and can not be led out. A lining at the bottom of the inclined shaft is enhanced to serve as a permanent structure, and an inclined shaft body stone blocking wall and two blocking walls are arranged along an inclined shaft channel. A transverse well direction ditch is arranged on the upper slope toe of a first blocking wall body in an excavated mode, connected into a longitudinal well direction ditch arranged at the bottom of the wall body in an excavated mode and then connected into a transverse well direction water flowing groove formed in the lower slope toe of the wall body in an excavated mode. A longitudinal well direction water flowing groove formed along one side of the lower slope of the first blocking wall penetrates through the second blocking wall and is connected into a water flowing groove formed in the upper slope of a tunnel-entering opening of the inclined shaft in an excavated mode and connected into a side ditch in the tunnel through a longitudinal well direction drainage pipe, and finally water is drained out. The inclined shaft can be safely isolated from the tunnel, besides, the water in the inclined shaft can be drained out normally, so that structure safety of the bottom of the inclined shaft is guaranteed, and water drainage is smooth, and therefore no threat on the tunnel can be caused.

Description

technical field [0001] The invention belongs to the technical field of tunnel traffic engineering, and in particular relates to a structure for permanently sealing an inclined shaft isolated from a tunnel. Background technique [0002] A large number of tunnel projects have been built in my country's railway, highway and other transportation projects. In order to speed up the construction progress and shorten the construction period, long and extra-long tunnels often set up inclined shafts, horizontal tunnels, vertical shafts and other auxiliary tunnels in combination with terrain conditions as a means of increasing the working surface. Most of them are inclined shafts. Inclined shafts are often temporary projects that are only used during construction, so their support measures are relatively weak. Local reinforcement measures can be taken at any time during the construction period. After long-term storage after use, they are prone to collapse, and falling rocks will cause d...

AI Technical Summary

Problems solved by technology

Inclined shafts are often temporary projects that are only used during construction, so their support measures are relatively weak. Local reinforcement measures can be taken at any time during the construction period. After long-term storage after use, they are prone to collapse, and falling rocks will cause damage to the bottom of the inclined shaft. Tunnels cause direct damage. At the same time, there is groundwater leakage in general inclined shafts, and the water can only flow along the slope to the main tunnel. If sediment is entrained, it is easy to block the drainage ditch of the main tunnel. Therefore, a proper plugging method is required. The structure can safely isolate the inclined shaft from the tunnel, and at the same time, can drain the water in the inclined shaft normally to avoid threats to the tunnel itself

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