采用RFPA2D对坚硬顶板、坚硬煤层、坚硬底板三体模型进行冲击倾向性数值试验研究。结果表明:坚硬顶板组合体峰值后突然失稳,易发生冲击地压;坚硬煤层组合体峰值前储存大量弹性能且瞬时释放,极易发生冲击地压;坚硬底板组合体峰后曲线呈现阶梯性缓慢下掉,不易发生冲击地压。组合体声发射能量释放分成3个阶段。坚硬顶板组合体和坚硬煤层组合体能量瞬时集中释放,坚硬底板组合体能量缓慢释放。虽然坚硬底板组合体释放总能量大于坚硬顶板组合体,但能量释放机制不同。 RFPA2D is used to study the numerical model of impact propensity of hard roof, hard coal seam and hard floor. The results show that the peak value of the rigid roof assembly suddenly becomes unstable and the rock burst occurs easily. Before the peak value of the hard coal seam composition, a large amount of elastic energy is stored and released instantaneously, Slow down, not prone to impact pressure. Acoustic emission energy release is divided into three phases. The energy of the hard roof assembly and the hard coal layer combination is instantaneously released, and the energy of the hard flooring assembly is released slowly. Although the hard bottom assembly releases more energy than the hard top assembly, the energy release mechanism is different.