2013年6月20日小浪底水库开始调水调沙,历时20天。在此期间,小浪底水库水情复杂多变,水位、水流等变化异常,加之库区内含沙量大,流速高,冲刷力强,沿岸变形体坍塌、滑坡情况随时可能发生。此外,水库排水下泄时产生黄河“流鱼”现象会吸引大量群众到场打捞。为了保证库区居民生命财产和 June 20, 2013 Xiaolangdi Reservoir water and sediment control began, which lasted 20 days. During this period, the water conditions of Xiaolangdi Reservoir are complex and changeable, with abnormal changes of water level and water flow. In addition, the sediment concentration in the reservoir area is high, the flow velocity is high, the erosion force is strong, the coastal deformation body collapses and the landslide situation may occur at any time. In addition, the discharge of the reservoir when the Yellow River “fish ” phenomenon will attract a large number of people arrived at the scene salvage. In order to ensure that the residents of the reservoir life and property