温度差产生的热应力对促进边坡岩体风化进程有重要影响。根据有限元法原理,分析了边坡热应力场的交变特性和作用特点,提出了热应力作用下疲劳破坏判断准则,并结合重庆市危岩体发育特征,分析了热应力作用下凹腔的形成机理。 The thermal stress caused by temperature difference has an important influence on the weathering process of slope rock mass. According to the principle of finite element method, the alternating characteristic and the action characteristic of the thermal stress field are analyzed. The judgment criteria of the fatigue failure under the thermal stress are put forward. Combined with the development characteristics of the dangerous rock body in Chongqing, The formation mechanism.