论文部分内容阅读
本文在实验室用立体相似模型研究在三向荷载作用下,结构面倾角为30°,45°,55°,65°和80°时,掘进巷道对其围岩稳定性的影响。通过试验分析得出:结构面倾角为45°时围岩稳定性较好,随着结构面倾角增大围岩稳定性减弱,当结构面倾角为80°时,围岩失稳较大。并得出巷道周围影响范围约为巷道半跨的五倍左右。
In this paper, the influence of driving roadway on the stability of surrounding rock is studied in the laboratory by using the model of three-dimensional similarity model under the action of three-dimensional load when the structural plane inclination is 30 °, 45 °, 55 °, 65 ° and 80 °. The experimental results show that the stability of surrounding rock is good when the inclination angle of structural plane is 45 °, and the stability of surrounding rock is weakened with the inclination of structural plane increasing. When the inclination angle of structural plane is 80 °, the surrounding rock instability is larger. It is concluded that the influence around the roadway is about five times that of the semi-roadway.