摘要
本文在参考已有资料的基础上，分析了重庆市浅埋地下洞室安全顶板厚度的影响因素。采用有限单元数值模拟法研究了地基与洞室相互作用下的破坏机制，以及各影响因素对浅埋地下洞室安全顶板厚度的影响及相关变化规律，并用逐步线性回归的方法得出了一个能综合考虑各影响因素的安全顶板厚度的预测模型。本文最后还分析了顶拱裂隙对安全顶板厚度的影响。
n this paper, the factors affecting the satety tickness of roof of shallow underground excavation in Chongqing City are analysied with referencing previous data. The mechanism for failure under the effct of interaction between the foundation and the undergraund excavation, the effect of every factors on the safety tickness of roof and the variability law are studied by means of FEM numerical simulation. The safety thickness of roof forecasting model is obtained by stepwise regression analysis.
出处
《工程地质学报》
CSCD
1998年第2期120-127,共8页
Journal of Engineering Geology
基金
国家杰出青年科学基金
关键词
地下洞室
浅埋洞室
安全顶板厚度
洞室
地基
Shallow underground excavation, Foundation, Numerical simulation, Safety roof tickness, Failure mechanism, Forecasting model, Chongqing City.
