Early drainage method of mine chamber with heavy water

Abstract

The invention discloses an early drainage method of a mine chamber with heavy water. The method comprises the following steps: distributing drilling machine chambers 2 and 3 on a vein across wall between two drilling drifts, and drilling drainage holes 4 and 5; distributing the drainage holes 4 and 5 within the range of two sides on the upper part of a to-be-mined chamber; enabling the upward oblique angle of the drainage holes 4 and 5 to be 5 degrees to 15 degrees, wherein the hole submerging depth is less than or equal to the length of the chamber; and determining the jointing, fracture and detrition zone development parts in the drainage holes, inserting water filtering pipes into the parts, and increasing the permeation coefficients of the jointing, fracture and detrition zone development parts in the drainage holes by utilizing directional jetting hole technology. According to the method, the working plane of an extraction chamber is not occupied, the drainage is conducted by utilizing a vein crossing engineering of rock drilling level and the drainage holes in the vein crossing engineering; aiming at the mine chamber with heavy water, underground water on the upper part of the chamber can effectively blocked, so that the minimal underground water flows in the chamber of extraction work, the underground water of the extraction chamber can be effectively reduced, and the probability of water disasters in the mining work can be reduced.

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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