用脆弱性指数法评价屯兰矿8号煤奥灰突水

Application on Vulnerability Index Method of Ordovician Limestone Water Inrush Evaluation in No.8 Coal of Tunlan Coal Mine

以有效隔水层等效厚度、隔水关键层有效厚度、断层和褶皱密度、断层规模指数、断层交点和端点分布、陷落柱、峰峰组水压、峰峰组富水性和矿压破坏带深度等九个因素为主控因素,运用脆弱性指数法对屯兰矿8号煤底板奥灰突水性进行了评价,将屯兰矿8号煤底板奥灰突水划分为五个区域,即煤层底板突水脆弱区、煤层底板突水较脆弱区、煤层底板突水过渡区、煤层底板突水较安全区和煤层底板突水相对安全区。

Takes nine factors as main control factors such as effectively water- resisting layer equivalent thick- ness, key layer effective thickness, fault and fold density, fault scale index, fault node and end distribution, collapse column, fengfeng group of aquifer water pressure, fengfeng group of aquifer rich water, mineral pressure damage zone depth and etc. Using the vulnerability index method to ordovician limestone process water of No. 8 coal lan coal mine is evaluated, ordovician limestone water gions, namely the water - inrush fragile area, the water inrush of No. 8 coal floor in the mine is divided - inrush fragile area, the water - inrush transition floor in Tun- into five re- zone, safety zone and relative safety area of water- inrush from coal floor.