采矿对断层的扰动及水文地质效应

观测发现，采矿对煤层底板下２７ｍ深的断层仍有显的影响，扰动超前５１．３ｍ开始，采后６０ｍ尚未结束，数值模拟发现断民动后发生了扩展，注水实验发现断层受扰动后涌透性显增强，煤层底板深部在采面前方受扰动，且越深受扰动越早，超前扰动区是注浆加固底板的最佳区段，且对突水机理的研究及突水预报很有意义。

MINING DISTURBANCE ON FAULTS IN PANEL AND THE HYDROGEOLOGICAL EFFECT

According to the measurement,mining stress exerts obvious disturbance on faults which is 27 m under floor.The disturbance starts at 51.3 m in front of the working face and does not end when the working face is more than 60 m over passing the measured tunnel.Numerical simulation found that the faults were extended under disturbances.Injection tests show that permeability of the fault obviously increases after they were effected. The deeper strata under the coal seam,the earlier they are disturbed. The disturbed areas in front of the working face is the best place for consolidating floor by grouting and significant in predicting water inrush and studying inrush mechanism.