马河崩塌体边坡稳定程度敏感性分析

Sensibility analysis of stability of Mahe deposit slope

针对雅砻江楞古水电站边坡稳定性问题,以马河崩塌体边坡为例,选取岩体重度、粘聚力、内摩擦角、水位、地震系数为影响因子,以边坡的安全系数为指标,基于均匀设计开展数值试验,对试验结果进行灰关联分析,得出各因素与边坡安全系数之间的关联系数和关联度。研究结果表明,各因素对边坡稳定性的影响大小依次为内摩擦角>水位>地震系数>粘聚力>重度。

Lenggu hydropower station is located in alpine valley region of Yalong River. Due to the complex geological environment, the stability problem is sever and it is influenced by numerous fac- tors. With slope safety factor chosen to be the index, the unit weight, cohesion, internal friction an- gle, water level and seismic coefficient were selected to be the factors. Then, the numerical experi- ments based on uniform design were done and the results were analyzed with grey correlation theory. The result show that the sequence of magnitude of correlation with slope stability is ： internal friction angle 〉 water level 〉 seismic coefficient 〉 cohesion 〉 unit weight.