The method of releasing water ahead of time in the mine house of Dashui Mine

Abstract

The invention discloses a method for discharging water in advance in a mine house of Dashui mine. Drilling chambers 2 and 3 are arranged on the vein wall between two rock drilling tunnels, and water holes 4 and 5 are opened; the water holes 4 and 5 are arranged. Arrange the upper and both sides of the mine house to be mined; the drainage holes 4 and 5 are inclined upward at an angle of 5°~15°, and the depth of the no holes is less than or equal to the length of the mine house; determine the development positions of joints, fissures and broken zones in the drainage holes, and under the above-mentioned positions The directional perforation technology is used to increase the permeability coefficient of the joints, fissures and fractured zones in the drainage holes. This method does not occupy the working face back to the mining house, and uses the horizontal piercing project of rock drilling and the exploration and drainage holes constructed on the piercing project to discharge water; Minimize access to the mining room, effectively reduce the pressure of groundwater returning to the mining room, and reduce the probability of water damage during mining.

Description

technical field [0001] The invention belongs to the technical field of water prevention and control in underground mines, in particular to a method for releasing water in advance from a mine house in a large water mine. Background technique [0002] In the mining of underground mines, especially in Dashui mines that use the empty field or filling method, when the scale of the mine is large, the sudden gushing of groundwater often causes disastrous consequences, which seriously affects the safe mining of the mine. In relatively broken areas, large water spray will increase the probability of rock mass instability, and will also have an adverse effect on safe mining. [0003] In large-scale Dashui mines, it is unrealistic to completely drain the ore deposit from the perspectives of ecology, technology, and economy. In order to reduce the impact of water pressure on mining safety, mine recovery generally adopts the mining method of mining while draining water. mining. Accordi...

AI Technical Summary

Problems solved by technology

According to the traditional method of detecting and discharging water, before mining in the mine house, the detection and discharge holes are arranged on the mining face to perform advanced water detection and discharge work. The water discharge holes are generally arranged in a fan shape. , for the case where there are sufficient sources of groundwater recharge in the upper part of the mine, this method of releasing water cannot effectively reduce the amount of water inflow during the mining process of the mine, and the threat of water damage to the mining of the mine has not been effectively reduced

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