南腊河电站岩质高边坡稳定性分析及坡比选择

High Rocky Slope Stability Analysis and Slope Ratio Selection in the Nanlahe River Power Station

南腊河电站为一坝后式电站,建筑物相对集中,而河道较狭窄,因而所需开挖的边坡较高,因此选择安全、经济的坡比对工程建设十分重要。通过分析该工程区岩体结构、地下水、地震及地应力及人为因素对边坡稳定性的影响,就如何选定一个安全经济的坡比进行探讨。

The Nanlahe Power Station is a kind of the power station at the toe of the dam.The structures are densely distributed and the water- waysare comparatively narrow. Therefore a high slope is needed to excavate. It is crucial to select a safe and economic slop ratio tor the con- struction. Different factors, which influence the slope stability, have been analyzed, such as the rovky structure, tmdergrotmd water, earthquake, earth stress and the human factors. The problem of how to select a safe and economic slope ratio has been studied.