论文部分内容阅读
采用相似材料和煤质材料模拟煤矿冲击矿压发生的过程和现象，揭示了煤壁局部突然失稳形成片帮型冲击矿压的机制，即巷道附近压应力集中区内裂纹平行壁面扩展、贯通，形成层裂板结构，在一定压力下发生压曲破坏。此外，试验采用三维模型和现场煤样，更接实际情况，为此类试验提供了新的途径。
The similar materials and coal materials were used to simulate the process and phenomena of rock burst in coal mine. The mechanism of sudden rockburst in the coal wall was revealed, which is that the crack parallel wall in the compressive stress concentration area near the tunnel expanded. , The formation of split-plate structure, buckling under certain pressure damage occurs. In addition, the experimental use of three-dimensional model and on-site coal samples, more practical situation, provides a new way for such experiments.