为预测小浪底水库在拟定的调度方案下库区水沙运行规律 ,建立了准二维数学模型 ,并采用黄河三门峡水库及淮河白沙水库的实测资料对模型进行验证。针对设计的水沙系列及拟定的水库调度方式 ,对水库运用初期 1～ 5年的淤积过程进行计算的结果表明 ,水库运用初期大多为异重流排沙 ,库区淤积呈三角洲形态 ,并随运用时间的延长向下游推进 In order to predict the runoff and runoff of Xiaolangdi Reservoir under the proposed scheduling scheme, a quasi-two-dimensional mathematical model was established, and the model was verified by using the measured data of Sanmenxia Reservoir and Baisha Reservoir of Huaihe River. According to the designed water-sediment series and the proposed reservoir scheduling method, the sedimentation process of 1 to 5 years in the initial stage of reservoir utilization is calculated. The results show that most of the reservoirs were sediment of different gravity flow in the initial stage of reservoir operation, Use the extension of time to promote the downstream