Automatic drainage system of long tunnel reverse slope

Abstract

An automatic drainage system of a long tunnel reverse slope comprises a plurality of water collecting wells arranged in the length direction of a tunnel. The water collecting wells are formed in the bottom of the tunnel. A well lid is arranged at the upper portion of each water collecting well. A plurality of through holes are formed in each well lid. The well lids can close the upper portions of the water collecting wells. A water filter box is arranged inside each water collecting well. A plurality of filter holes are formed in the upper portion of the side wall of each water filter box. A water level measuring device, a first water suction pump and one end of a drainage pipe are arranged inside each water filter box, wherein the water level measuring device is connected with the first water suction pump. Due to the design, the well lids are arranged on the water collecting wells, existing protective barriers are omitted, the vehicle and machine travel space inside the tunnel is increased, and entrance and exit of large-scale equipment are not affected. Filtered water is controlled by the water level measuring devices to start the first water suction pumps, the water is drained into the adjacent water collecting well with the high terrain, and in this way, the water is drained out of the tunnel step by step. Due to the structure, sundries are prevented from being accumulated inside the water filter boxes, and the phenomenon that the first water suction pumps break down due to the fact that sundries enter the first water suction pumps is avoided.

Description

technical field [0001] The invention relates to a drainage system for a tunnel, in particular to an automatic drainage system for a reverse slope of a long tunnel. Background technique [0002] At present, in the construction of long reverse slope tunnel engineering, due to the reverse slope construction, the water in the tunnel cannot be discharged through the drainage ditch. Therefore, the existing reverse slope drainage is generally installed on both sides of the tunnel at intervals according to the length of the tunnel. A drainage well, each drainage well is composed of a sedimentation tank and a pump pool. The drainage is filtered by the sedimentation tank and then reaches the pump pool through the diversion tank, and then the water pump is turned on to discharge to the upper drainage well, and finally discharged to the outside of the cave step by step , in order to prevent pedestrians and vehicles from entering the drainage well by mistake, protective railings need to ...

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Problems solved by technology

[0002] At present, in the construction of long reverse slope tunnel engineering, due to the reverse slope construction, the water in the tunnel cannot be discharged through the drainage ditch. Therefore, the existing reverse slope drainage is generally installed on both sides of the tunnel at intervals according to the length of the tunnel. A drainage well, each drainage well is composed of a sedimentation tank and a pump pool. The drainage is filtered by the sedimentation tank and then reaches the pump pool through the diversion tank, and then the water pump is turned on to discharge to the upper drainage well, and finally discharged to the outside of the cave step by step , in order to prevent pedestrians and vehicles from entering the drainage well by mistake, protective railings need to be installed around the drainage well to make the space in the hole smaller and affect the entry and exit of large equipment

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