小浪底水库建成投入运用后 ,下游防洪形势将发生很大变化 ,但仍有发生大洪水的可能 ;水库运行初期清水下泄 ,下游河床冲刷下切 ,险情有所增加。 2 0 0 1～ 2 0 0 5年 ,黄河下游防洪目标为 :确保防御花园口洪峰流量 2 2 0 0 0m3/s的标准 ,努力减小中常洪水造成的漫滩损失。通过加强防汛工作正规化、规范化建设 ,全面落实防汛责任制 ,制订切实可行的洪水调度方案 ,以确保防洪安全 After Xiaolangdi Reservoir is put into operation, the flood control situation in the lower reaches will change greatly, but there is still the possibility of major floods. The initial discharge of clean water and the downstream riverbed erosion will increase the risk. From 2001 to 2005, the flood control objectives in the lower reaches of the Yellow River are as follows: to ensure the standards of preventing flood peak flow at Huayuankou of 2 20 000 m3 / s and to reduce the floodplain loss caused by the floods in the mid-1990s. By strengthening the normalization and standardization of flood control work, the flood control responsibility system will be fully implemented and practical flood control plans formulated to ensure flood control safety