浅埋洞室围岩压力有限元分析

THE SURROUNDING ROCK STRESS IN SHALLOW UNDERGROUND OPENINGS

本文运用有限元法的基本原理,采用ANSYS软件对浅埋洞室围岩应力状态进行了数值模拟,分别就埋深对浅埋洞室围岩压力的影响及浅埋山坡处洞室围岩压力进行了分析,并将分析结果与规范规定的简化公式求得的结果进行了比较,得出了一些有益的结论,同时提出了在实践中应注意的问题。

The principle of finite-element method is used to analyses of the underground openings of shallow embedded depth. And some numerical tests were carried out with ANSYS program. The affect of embedded depth and the surrounding rock stress of underground openings in sidehill were analyzed respectively. The results are compared with that coming from simplified formulas. Some knowledge was achieved according to the calculated results of some examples. At the same time it is pointed out that some problems should be considered in practice.