Mine water due to mining activities expose the groundwater of the aquifer (body) and Bay Mine. It is a major security risk in the underground mining process. So the underground mine waterproofing and drainage is to the prevention and treatment of mine water.
The prevention and treatment of mine water deposits in water-filled conditions, work out the reasonable control of water measures to reduce the amount of water of Mine, to eliminate the hazards of mining production, ensure safety, a reasonable recovery of underground mineral resources. Underground mine waterproofing and drainage?
Reasonable layout of roadway
The so-called rational arrangement of mine, is the exploitation of the layout of the roadway must take full account of the deposits in the specific hydrogeological conditions, the inflow of roadway and the mining area of water as small as possible, otherwise it will make mining conditions artificially complicated. Layout of the mining roadway should note the following:
Deposit, the mining sequence and roadway layout, should start with the hydrogeological conditions, the inflow of small lots, the flood experience in the complex of the lot layout of the roadway.
Bore and the shaft bottom is the key positions of the mines, anti-drainage and other important facilities here. Opening up the construction, it can not form a powerful anti-drainage capacity. Therefore, the arrangement should avoid the fracture zone, strong water-rich rock formations, karst development with a dangerous location, but should be located in the rock is relatively complete, stable, and does not occur suddenly lots of water.
The overall dewatering for a total of at the same hydrogeological unit, with each other hydraulically connected flood mining area should be carried out and the joint exploitation of the overall neglect of the mining area to form a uniform cone of depression, reduce the inflow of each well, which will improve the mine the mining efficiency.
Choose a rational mining method
The mining method should be determined under the specific hydrogeological conditions. In general, when the ore body above the strong water-rich rock or surface water bodies, it can not be used caving method of mining, in order to avoid a large number of groundwater or surface water into the mine, resulting in the submergence accident. Under these conditions, you should consider filling mining method. Intermittent mining method can also be used, the upper and lower two layers of staggered period of time mining the rock shift slowed down to reduce the overburden rock mining induced fractures height to reduce the amount of water of Mine.
In general, underground mining waterproofing and drainage should be based on the “prevention, combining prevention with control” principle, strive to possible trouble. Mine construction of water damage should be carried out before specialized investigation and prevention of water design, completed by the unit with the appropriate qualifications.
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