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滑坡是组成边坡的部分岩土体在一系列自然和人为因素综合作用下,沿贯通的剪切面向临空面发生整体下滑的现象。滑坡是一种常见的边坡变形破坏形式,也是一种工程地质、环境地质或灾害地质问题。在坚硬或松软岩土体、陡坡或缓坡、陆地或水下、天然或人工边坡地段都可发生。过去,在水利工程选址、施工和运行中,曾遇到过不少滑坡。如选址时发现的刘家峡左岸导流洞上游、安康左坝肩、小浪底二坝址右岸、龙羊峡水库右岸近坝地段的滑坡;施工期发现或发生的黄坛口左坝肩、新安江厂房、龚咀导流明渠、天生桥二级导流明渠上游滑坡;运行期发生的柘溪塘岩光、黄龙滩杨家坡等水库滑坡,陈村尾水明渠、龙泉山灌溉渠道滑坡等,
Landslide is part of the composition of the slope rock and soil in a series of natural and man-made factors under the combined action along the shear plane facing the overall phenomenon of the phenomenon of gliding. Landslide is a common form of slope deformation and damage, but also an engineering geological, environmental geology or disaster geological problems. In hard or soft rock, steep or gentle slopes, land or underwater, natural or artificial slope sections can occur. In the past, many landslides were encountered during the site selection, construction and operation of water conservancy projects. For instance, the landslide near the upstream bank of Liujialian left bank diversion tunnel, the left bank of Ankang dam, the right bank of Xiaolangdi Second Dam site and the right bank of Longyangxia Reservoir were found; the left abutment of Huangtankou Dam Plant, Gongtzu diversion channel, Tianshengqiao secondary diversion channel upstream landslide; run-time occurred in the rock Creek light, Huanglongtan Yangjiapo reservoir landslides, Chencun tail water open channel, Longquan Mountain irrigation canal landslides, etc.,