Study On The Impact Of Faults To Water-Inrush From Seam Floor And Prevention And Control

Wugou coal mine has complex geological conditions, suffered from water crisis when exploit the coal, especially the faults are widely distribute in the work face, are most likely caused by water damage, have a serious iMPact on mine safety and efficient production. Based on the floor of the theoretical analysis and fault activation water inrush analytical,make a summary of the discriminant analysis for the understanding of the water inrush.Based on the elastic-plastic mechanics and rock pressure theory of subject knowledge, summed up the mine floor water outburst mechanism and the mechanism of water inrush, combined effects of a single fault and two faults in the numerical simulation of iMPact analysis, a comprehensive coMParison of fault and two faults when the roof and floor destruction.By using FLAC3D numerical simulation software,establish a total of 15 numerical models, the fault angle is 30°,45°,60°,90°,single fault and two faults of the simulations were coMPared and analyzed the characteristics of the faults in found on the floor,the two faults are not simple superposition relationships.By simulating the 1016 face, simulating the floor of the two faults in different extraction steps, there is no or has the hydraulic pressure in the floor. In taking into account the influence and pressure of the fault conditions, and goaf damage of rock around the fault than the fault conditions, without considering the extent of damage increased.Wugou coal mine with the specific circumstances, proposed the establishment of fault prevention and control technology system. (1) identify the geological conditions; (2) to intercept water; (3) depressurizing; (4) to take water control measures; (5) select a reasonable mining methods; (6) Face Layout optimization; (7) grouting for stopping up water.