塌岸是水库环境地质的重要问题之一。通过对地形地貌、地层岩性、风（浪）作用、水库运用方式等塌岸影响因素的分析及其与三门峡水库的对比，经计算，得出小浪底水库的塌岸特点、规模及其对环境的影响，并认为水库运用方式对塌岸有较大的影响，但其塌岸规模不影响水库运用方式。 Bank collapse is one of the important problems of reservoir environment and geology. Based on the analysis of influencing factors such as topography, formation lithology, wind and waves, reservoir operation and other factors of bank collapse, and comparison with Sanmenxia Reservoir, the characteristics and scale of bank collapse of Xiaolangdi Reservoir and their impact on environment It is also believed that the mode of reservoir operation has a greater impact on bank collapse, but the scale of bank collapse does not affect the reservoir operation mode.