以城郊煤矿F_(20)断层为例,通过放水试验过程中太灰含水层连通性和补给来源分析,结合太灰含水层水化学特征及其时空变化规律,研究了深部矿井大型边界断层的导水性。研究结果表明,城郊煤矿F_(20)断层附近太灰含水层导水性良好,且能够得到有效且快速的补给,补给来源为奥灰含水层,补给通道为F_(20)断层。太灰水在空间上表现为随着与F_(20)断层距离的减小,矿化度和Na~++K~+含量均降低,Ca~(2+)含量增加;在时间上表现为随着涌水时间的延长,水样矿化度和Na~++K~+含量降低,而Ca~(2+)+Mg~(2+)含量增加;水化学时空变化特征也表明奥灰水通过F_(20)断层补给太灰水。 Taking the F20 fault in Chengjiao Coal Mine as an example, through the analysis of the connectivity and supply sources of the too-gray aquifer in the discharge test, combining with the chemical characteristics of water in the limestone aquifer and its temporal and spatial variation, Water-based. The research results show that the water-bearing property of too-gray aquifers near F 20 fault in Chengjiao Coal Mine is good and can be replenished efficiently and quickly. The source of recharge is the Ordovician aquifer, and the recharge channel is F 20 fault. Too gray water is spatially characterized by a decrease in salinity and Na ~ + + K ~ + content and an increase in Ca ~ (2+) content as the distance from the fault F_ (20) decreases; With the increase of gushing time, the degree of mineralization and the content of Na ~ + + K ~ + decreased while the content of Ca ~ (2 +) + Mg ~ (2+) increased. Through the F_ (20) fault recharge too gray water.