断裂带岩体工程地质力学特征及其对断层防水煤柱留设的影响

对F₃，F₄断层带水文地质、工程地质特征进行了系统测试研究，并结合钻探、物探资料，对F₃，F₄断层进行了导水和含水性分析，得出了F₃，F₄断层为不导水、不含水断层.分别利用相似材料模拟和数值模拟技术对F₃，F₄断层间块段不同水平留设断层防水煤柱开采进行了模拟，得出了不同地质条件下煤层顶、底板的采动效应；根据F₃，F₄断层带水文地质、工程地质特征及模拟结果，对F₃，F₄断层防水煤柱进行了重新留设，减小煤柱压煤量23万t.

The features of fault zone rockmass engineering geological mechanicsand its effect on leaving fault waterproof pillar

Combined with data of drilling and geophysical,studied the characters of hydrogeology and engineering geology in fault zones,the properties of transmitting and containing water in F_3 and F_4 fault zones was analyzed.That neither F_3 and F_4 faults contain water nor conduct it was ascertained.Mining simulation of leaving fault waterproof pillar in the different levels of F_3 and F_4 fault segments was carried by using technology of similar material simulation and numerical simulation,the mining effect of coal roof and floor under different geologic conditions was(educed.A)ccording to the characters of hydrogeology,engineering geology and simulation results,the fault waterproof pillar of F_3 and F_4 was reset,which reduced 230 thousand ton of coal pressed by pillar.