Overhead mining face roadway system and construction method thereof

Abstract

The invention discloses an upward mining working face roadway system and a construction method thereof. The purpose of rapid drainage is achieved by reserving a roadway conveying drainage ditch and a drainage roadway. When the water inflow of the transportation roadway top plate is small, water can flow into the drainage roadway along a transportation roadway drainage ditch and a drainage roadway drainage ditch; when the water inflow of the transportation roadway top plate is large, the water can directly flow into the drainage roadway; sand and stones are blocked through a retaining wall; the water reaches the position of the sealing wall after overflowing the retaining wall; and then, the water is drained into a boundary drainage roadway through the drainage pipe. Water is drained through the boundary drainage roadway, rapid drainage can be achieved, a large amount of water is prevented from being accumulated in a working face goaf, and water damage accidents are effectively prevented.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a roadway system and a construction method of an upward mining face. Background technique [0002] The upward mining working face is the working face that advances up the hill during coal mining or mining, and its boundary area is low and the advancing direction is high. The working face is threatened by aquifer water damage during mining. In order to ensure the safe production of the working face, it is necessary to drain the water on the roof in advance. However, there will still be a large amount of water gushing out suddenly during the mining of the working face during mining, causing a large amount of water in the goaf of the working face and even causing water damage accidents. [0003] In the prior art, the roof gushing water is discharged by drilling holes, and the drilling construction period is long. The drilling on site is affected by the diameter of the drilling...

AI Technical Summary

Problems solved by technology

However, during mining, there will still be a large amount of water gushing out suddenly during the mining of the working face, causing a large amount of water in the goaf of the working face and even causing water damage accidents

[0003] In the prior art, the roof gushing water is discharged by drilling holes, the drilling construction period is long, and the drilling on site is affected by the diameter of the drilling hole, the amount of released water is limited, and the drainage speed is slow

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