Drainage structure for controlled drainage of tunnel and tunnel drainage system with same

Abstract

The invention provides a drainage structure for controlled drainage of a tunnel and a tunnel drainage system with the same. The drainage structure for controlled drainage of the tunnel comprises two drain pipes, wherein the two drain pipes are connected and the diameters of the two drain pipes are different. The diameter of the drain pipe A is smaller than the diameter of the drain pipe B. One end of the drain pipe A is sealed, and the sealed end of the drain pipe A stretches into the drain pipe B. The drainage structure further comprises a spring, the spring is fixedly connected with the bottom of the sealed end of the drain pipe A, a sluice valve block matched with the cross section of the drain pipe A in size is arranged at the movable end of the spring, a plurality of water outlets are formed between the bottom end of the drain pipe A and the sluice valve block, and the sluice valve block is connected into the drain pipe A in a sliding mode through a plug. The drainage structure and the tunnel drainage system with the drainage structure are simple, have the moderate drainage effect, can further ingeniously eliminate calcium crystals (or suspended sediment) adhering to the inner portions of the drain pipes, and are high in operability, wide in practicability and capable of effectively promoting the development of drainage systems of tunnels which are high in ecological system requirement or tunnels in limestone areas.

Description

technical field [0001] The invention relates to a drainage structure, in particular to a drainage structure suitable for limited discharge of tunnels in limestone areas and a tunnel drainage system with the drainage structure. Background technique [0002] The construction of the tunnel will change the groundwater system of the surrounding environment. For areas with high ecological system requirements or limestone areas, the drainage of the tunnel must be designed. If there is no drainage pipe in the tunnel, the groundwater will exert great pressure on the lining structure, and the thickness of the lining needs to be greatly increased during the design, resulting in an increase in construction cost. At the same time, the excessive discharge of groundwater will also have adverse effects on the surrounding environment. In addition, the calcium crystals (or suspended sediment deposits) in the tunnel drainage pipes block the drainage pipes, which have a serious impact on the dr...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a tunnel limited discharge drainage structure a

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