金沙江鲁地拉水电站麦叉拉沟内滑坡稳定性分析

麦叉拉沟内滑坡位于金沙江鲁地拉水电站左岸麦叉拉沟左岸,距麦叉拉沟口约500 m,距离电站中坝址约800 m,该滑坡的稳定性关系到大坝的安全建设与运行,需要做出明确的评价.本文详细分析了滑坡的形态、结构,分析了滑坡的形成机制,通过试验确定了滑带物质的力学参数,借助极限平衡法方法进行了稳定性分析.计算结果表明滑坡在同时考虑地震与暴雨时仍然处于稳定状态,不会危及大坝的安全.

STABILITY ANALYSIS OF MACHALA DITCH LANDSLIDE IN THE RESERVOIR OF LUDILA HYDROPOWER STATION ALONG JINSHA RIVER

Machala Ditch Landslide was located in the left bank of Machala Ditch, 800m from Ludila Hydropower Station. The stability of the landslide was important to the security and stability of construction and running of Ludila Hydropower Station. This paper analyzed the shape, makeup, formation mechanism of the landslide, and obtained mechanical parameters of the slip zone soils by the tests and calculation. The stability analysis of the landslide was done using limiting equilibrium methods. The computing results indicated that the landslide was stable under earthquake and rainstorm condition at one time, and that the stability of the landslide was no harm for Ludila Hydropower Station.