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在极限分析理论框架体系的基础上,提出了平面滑动型岩质边坡极限分析上限法。该方法按照外力所做的功率等于内力所消耗的功率,即滑体处于极限状态时两功率相等的条件——虚功率方程,综合考虑作用在岩质边坡上的后缘裂缝静水压力、沿滑面扬压力、重力、水平地震作用力、锚固力等外力,按照强度折减法,推导得出了岩质边坡稳定性评价的极限分析上限解。锦屏一级水电站右岸泄洪洞引渠内侧工程边坡属于典型的多级台阶状岩质高边坡,该边坡岩体结构为层状结构,变形破坏模式为平面滑动。对引渠内侧岩质边坡稳定性分析结果表明,极限分析上限法对平面滑动型岩质边坡有较好的适用性。
Based on the theoretical framework of limit analysis, the upper limit method of limit analysis of flat sliding rock slope is proposed. This method is based on the power of external force equal to the internal power consumed by the power, that is, when the sliding body is in the limit state, the two equal power conditions - virtual power equation, considering the hydrostatic pressure of the trailing edge of the rock slope, Sliding surface pressure, gravity, horizontal seismic force, anchoring force and so on. According to the strength reduction method, the upper limit solution of the limit analysis of rock slope stability evaluation is deduced. The inside slope of the diversion tunnel on the right bank of Jinping I Hydropower Station belongs to the typical multi-step rocky high slope. The rock mass has a layered structure and the deformation failure mode is plane sliding. The analysis of the stability of the rocky slope inside the canal indicates that the upper limit analysis method has good applicability to the plane sliding rock slope.