中文摘要：

基于重复采动下巨厚岩层失稳仍引发大能量矿震的特点，通过分析重复开采中上覆岩层的冒落和移动规律，研究巨厚岩层关键块体的结构形态、在不同区域的受力情况以及断裂失稳特点，得出重复采动引发矿震的机理：一是采高增加造成采空区上方顶板“活化”，导致原铰接平衡岩层结构发生滑落或剪切失稳，引发矿震；二是顶板岩层移动线外扩，导致边界区域岩层在平面和高度方向活动范围增加，造成高应力集中区巨厚岩层大范围失稳，引发强烈矿震。依据矿震诱发冲击机理，通过优化工作面开采设计、降低对危险区域的扰动和优化巷道围岩结构强度，有效地保证了被解放层采场的作业安全，实现了“有震、无灾”的控制目标。

英文摘要：

The instability of super-thick strata will induce tremors with large energies during repeated mining.Based on this phenomenon, the caving and movement rules of overlying strata during repeated mining were analysed, the structural form of key block in the super-thick strata as well as the stress situation and fracturing instability characteristics in different areas were further studied.Finally, the tremor mechanism induced by repeated mining was obtained.That is, first, the increase of mining height activates the gob strata, and leads to sliding or shearing instability of the hinged balance structure in roof strata, thus triggering the occurrence of mining-induced tremors.Second, the external expansion of strata movement line enlarges the horizontal and vertical move ranges of roof strata on the border areas, which results in the large-scale instability of the super-thick strata in the highly-concentrated stress area and then in terms of rock burst mechanism induced by tremor, the optimization of working face design, disturbance reduction to dangerous zones and structural strength enhancement of roadway surrounding rock were carried out to effectively ensure the mining safety in the protected face, and achieved the control goal of tremor occurred with rock burst disaster-free.