中文摘要：

尝试建立应力边界条件,通过Airy应力函数法解答不连续地质构造中偏压隧道围岩受力问题,并获得应力位移弹性解。经讨论发现,与b→∞模型相比,b→c模型更适于分析不连续地质引起的围岩偏压效应。结果表明,不连续地质引起的偏压现象使围岩各方位应力集中程度不同,径向应力的极值方位发生变化,同时环向应力的极大值位置发生转移。得到的结果为不连续地质构造中隧道偏压问题提供理论解答。

英文摘要：

Trying to establish the stress boundary conditions, Airy stress function method was used to solve the prob- lem of surrounding rock stress of bias tunnel caused by discontinuous geological, and the elastic solution of stress field and displacement field was obtained. It is found that b→c model, compared to b→∞ model, is more suitable for the analysis of bias effect caused by discontinuous geological. The results show that bias effect of surrounding rock caused by discontinu- ous geological will make differences of the stress concentration at different positions, and make the direction of extremum of radial stress change, meanwhile the position of maximum value of circumferential stress will transfer. The results pro- vide theoretical solution for the problem of bias tunnel caused by discontinuous geological.