汉江蜀河水电站库水位对岸坡稳定性的影响分析

Influence of Water Level of Shuhe Hydraulic Power Station on Reservoir Bank Stability

汉江蜀河水电站属于Ⅱ等大(2)型水电站,水库的建成、运行可能对岸坡的稳定性造成一定的影响,尤其是水库蓄水后的库水位变化及与库水位变化相关的参数,对岸坡的稳定影响极大,因此弄清楚库水位变化与其相关的参数对岸坡稳定性的影响,是汉江蜀河水电站成功运营必须解决的问题之一。以地质背景为基础,结合具体坡段的岩性、结构特征等,从水库水位公式的建立,到在不同库水位的条件下,运用数值模拟对岸坡稳定性系数和相关参数的变化进行了分析评价。

Shuhe hydraulic power station is a large scale power plant belonging to Ⅱ type, construction and operation of which may induce an influence on reservoir bank stability. Especially after water storage, changes of water level and related factors may have great effect on stability of the bank. So understanding the influences of water level and related factors on reservoir bank stability is a key to successful operation. Based on the local geologic setting and combined the lithology and structure features, this paper analyzed and evaluated bank stability and related factors＂ change under the condition of different water level by numerical simulation and constructing expressions of reservoir water level.