关键词: 断层导通型, 水力连通试验, 数值模拟, 注浆堵水

Abstract: Aim at the situation of the inflow point focuses at 15 m below the changing point of -808 m belt roadway in a mine.In the inflow area，rock mass is broken and the stability of surrounding rock is poor.The gush-out water endangers the underground safety and increases the cost of mine drainage.Through the analysis of engineering geology and geohydrologic conditions，the source of water is determined as sandstone M5 aquifer.This sandstone M5 had been cut by roadway，which results in the roof water gushing with fault conductivity type.The synthetic geophysical techniques and hydrological connected tests based on the transient electro-magnetic(TEM)method and the high-density electric method are made to find out the source of water gushing and the distribution of main channels.The Visual Modflow groundwater seepage simulation software is employed to analyze the underground water yield and its movement.And the plugging idea of the “deep cutting and shallow reinforcement” was proposed.Finally，the management schemes including grouting drilling design and parameter selection were determined and then implemented in the field.Grouting effect is evaluated with water inflow contrast method，obtaining that grouting has a remarkable performance.The research results have certain guiding significance for the similar engineering.

Key words: Fault conductivity type, Hydrological connected test, Numerical simulation, Grouting and blocking water