| As our country coalfield geology condition is complicated, the mine disasters are frequency, and water inrush in mining floor, which has effected mining safety in production seriously, has occurrence more in mine process. The mine disaster of water which is many types is caused by many factors, however, the stuff statistics indicate that the majority water inrushes in mining floor have the direct relation with fault. Therefore, it is great meaning to research the influences of fault to water inrush in floor.Starts from the basic concept of the fault and the water inrush, this paper analyze to generalize the classification of various fault and water-inrush, particularly against fault, the classification research is more profound, and expound theirs' characteristics in detail. Then, some regularly cognition of water inrush from fault in floor have been gained. According to five main influence factors which is source of water, hydraulic pressure, confiningbed, geological structure and mining of the water inrush, analyze the influence of the fault to five factors, then generalized the related regulations, then further study the mechanism of water-inrush in the complete floor. Based on these, from various angles, such as the mathematics statistics theory and the damage mechanics, study floor rock rupture mechanism profoundly. According to the distributing regulation characteristic of floor stress field and combined with "Three-strips" theory, the condition and mechanism regulation of water inrush from fault are generalized. With further analysis comparing, the research generalizes the influence of fault to water inrush. End, make use of the large numerical simulation software ANSYS, and put forward various simulation schemes to the numerical simulation for complete floor and floor effected by fault. Especially consider changes of the separation and inclination of fault, to simulate stress distribution and rock rupture in floor, then to observe and analysis the influence regulation of fault. |
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