冲击矿压模拟试验研究

冲击矿压模拟试验研究 English Version

Dept. of Mechanics Huazhong University of Science Technology Wuhan 430074 Dept. of Mathematics Mechanics China University of Mining Technology Xuzhou 221008

摘要: 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。
- 冲击矿压 /
- 层裂板结构 /
- 相似材料 /
- 模拟试验 /
- 稳定性
Abstract: In this paper, the process and phenomenon of rock bursting in coal mines are simulated by using similar material and crude coal. The mechanism of surface instabilities leading to coal bursting is revealed. In the compression stress concentration area near opening free surface, the growth and coalescence of cracks occur parallel to the free surface and a layer plate structure is formed. Under critical compression, this structure buckles and fractures. 3 D model and in situ coal are used in this experiment. A new experimental approach is provided.
- rockburst /
- layer plate structure /
- similar material /
- simulation test /
- stability.