急倾斜煤层开采解放层防治冲击地压数值模拟

Study of rockburst prevention and its numerical simulation in slant coalbed

采用反映煤岩等脆性材料破坏特征的五参数WilianmWarnke强度准则破坏模型,利用有限单元法单元“处死”的功能真 实模拟开挖过程,进行急倾斜煤层开采解放层防治冲击地压的数值模拟研究,揭示了急倾斜煤层开采解放层的煤岩层应力场、变形场 等物理量的变化规律和解放范围以及解放程度,为急倾斜煤层开采解放层防治冲击地压制定较为合理的方案、安全技术措施等提供重 要的依据和指导作用。

The article adopted The WilianmWarnke strength failure criterion for predicting the failure of brittle materials the and used the function of 'element is killed dead' in finite element method to simulate mining process. The investigation of rockburst prevention and its numerical simulation in slant coalbed were carried out, revealing the law of stress field and deformation field and the liberating degree and scope in extracting release coalbed .The results provided important basis for rockburst prevention.