数值模拟与熵突变综合分析边坡下地下工程围岩稳定性

Stability Analysis of the Rocks Surrounding the Underground Excavation under Slope by Entropy Catastrophe and Numerical Simulation

在水利水电、公路铁路隧道以及采矿业中,很多地下工程都是在边坡下进行开挖的,使得复杂的地下工程稳定性问题研究更加困难。以某露天煤矿的边坡下开采为工程背景,采用熵突变准则选取分析了围岩稳定性,并与数值模拟计算结果相比较。研究表明,A剖面围岩处于不稳定状态,而B剖面围岩稳定性则相对较好。该研究为实际工程的安全可靠性提供一定的参考。

In water conservancy, hydropower, tunnel of railway and road, and mining industries, many underground works are carried out under slope, making it even more difficult to study the stability of complex underground works. Taking the mining carried out under slope in an open-pit coal mine as the engineering case, the rule of the entropy catastrophe was used to analyze the stability of the wall rock, whose result was then compared with that of numerical simulation. The study concludes that the rock in Profile A is not steady while that in Profile B is comparatively stable. This study is of some reference significance to the safety reliability of real engineering.