煤－岩组合体冲击倾向性三维数值试验分析

运用FLAC3D对河南某矿的煤－岩组合体冲击倾向性进行三维数值试验研究，分别通过改变煤－岩体高度比例（1∶1、1∶2、2∶1）和夹角（0、30°、45°）来进行模拟，分析煤－岩体不同的组合模式对冲击倾向性的影响。三维数值试验结果表明：岩石高度所占比例越大，煤－岩体的冲击能量指数越大，弹性能量指数越大，冲击倾向性也就增强；煤岩夹角越大，煤－岩体的冲击能量指数越小，弹性能量指数也越小，冲击倾向性也就减弱。

Three-dimensional numerical simulation of bust-prone experiments about coal-rock combination

Using FLAC3D，three dimensional numerical simulation of bust prone experiments about coal rock combination at a coalmine in Henan Province was studied.Through changing height scale(1∶1，1∶2，2∶1) and intersection angle between coal and rock，the influence of different combination modes on its bursting potential was researched.The results show that the height scale between coal and rock is more larger，the damage energy index is more higher，the elastic energy index is more higher，and the bursting potential is more stronger.And the intersection angle between coal and rock is more larger，the damage energy index is more lower，the elastic energy index is more lower，and the bursting potential is more smaller.