西溪河地洛水电站泥沙模型试验研究

通过泥沙模型试验研究，分析不同入库水沙条件下进入取水口内水流的含沙量和颗粒级配，水库对泥沙的沉降率。通过合理控制水库泥沙淤积和水库泄空冲沙，可保证设计所需长期有效的日调节库容。设计中取消了地下沉沙池，以水库代替沉沙池进行沉沙和冲沙是可行的方案。通过试验，对原枢纽的防沙、排沙措施进行了修改。

An Experiment of Sediment Model for Diluo Hydropower Station in the Xixi River

By the experiment of sand model,an investigation of silt content,rank of silt grain and silt deposition rate under different conditions of water and silt have been obtained.The longterm valid regulatingg storage required by design can be ensured by rationally controlling silt deposit and drawing down reservoir level for flushing silt. By adopting reservoir instead of sand basin and flushing sand,the sand basin of the Diluo hydropower station can be eaneeled.Tbe methods of sediment control proposed in the preliminary design have been improved by means of the experiments.