Study On Numerical Simulation Of Fault To Floor Water Inrush

With increasing depth of mining, mine water inrush growing phenomenon, such as Taoyuan Mine Huaibei cause sudden collapse column because water flooded wells, but most of the water inrush accident was due to faults caused by sudden water poses a serious accident casualties and economic losses, and therefore the impact of fault hazard studies on water inrush, for mine water damage prediction and prevention are of great significance.The main cause of this article by means of numerical simulation of the impact of water inrush analyze the fault, and further proposed to mine water inrush prediction and prevention measures. Research content and results of the paper include the following aspects:1.summarizes the relationship between the fault and the water inrush. From the form of the fault, causes, hydraulic conductivity characteristics, mechanical characteristics, nature, hydrogeology type, with a stress fracture distribution, with a stress fracture distribution of these eight aspects of the faults were simple classification; summarizes the mine water inrush water, and describes the fault is mine water inrush lead to the main channel; analysis of the role of groundwater on the fault plane; on the type of fault cause sudden water were divided, and the fault cause water inrush characteristics are summarized.2、in theory, through the establishment of fault activation model, analyzed the combined effect of the stress field and seepage field, floor fracture activation rules, and analyzes the fault produced like a dip angle, promoting distance, direction, and to promote mining depth and other factors on faults lead to the risk of sudden water were analyzed; through summary and theoretical analysis of fault waterproof pillar under the influence of the length of stay set formula.2. the use of numerical simulation software FLAC3D faults caused by sudden water master can be simulated fault dip draw smaller, broken away, the greater the gap, the fault happens to communicate face to pay off the coal face of the critical line the greater the distance. With the face forward, away from the fault stope closer; greater the pressure water pressure; larger the width of the face, the more easily lead to the activation of the fault, the easier it makes stope and faults caused by the fault conduction of water inrush accident. 3.combined with geological data Huaibei Liuqiao two mine water inrush danger to face with the fault prediction, and made a fault affecting the waterproof pillar of leaving in length formula.