为降低和减少矿震所导致的事故和灾害,利用100KN液压万能试验压力机对原煤进行单调加载、分级加载、循环加载三种加载方式的单轴压缩试验.结果表明:不同加载方式下原煤震动信号的变化特征各不相同;原煤在加载过程中有少量微震信号,当加载到原煤破坏时微震信号最为明显,可以根据微震信号的强弱来判断煤岩的受力状况;三种加载方式下,煤样在破坏失稳前震动信号均存在一段沉寂区. In order to reduce and reduce the accidents and disasters caused by mine earthquake, uniaxial compression tests of monotonous loading, grading loading and cyclic loading of raw coal were carried out by using 100KN hydraulic universal test press.The results show that the coal vibrations under different loading modes There are a few microseismic signals during the loading process of raw coal, and the microseismic signal is the most obvious when it is loaded into the damaged coal. The strength of coal and rock can be judged according to the strength of the microseismic signal. Under the three loading methods , Coal samples in the destruction of instability before the vibration signal there is a period of silence.