针对正断层赋存条件,通过相似材料模拟试验,研究了下盘工作面向断层开采时,断层活化前后覆岩结构演化规律,并采用力学分析方法揭示了覆岩呈现不同结构时的力学行为。 According to the conditions of normal faults, the evolution of the overlying strata before and after the fault was activated was studied through simulating experiments of similar materials. The mechanical behaviors of the overburden strata with different structures were revealed by mechanical analysis.