柳洪水电站沉沙方式对比分析

研究了柳洪水电站沉沙池沉沙与水库沉沙两种方式的水库运行方式和沉沙效果,对两种沉沙方式的泥沙沉降率、过机泥沙、停机时间和影响因素进行对比分析和评价。结果表明,作为一种节约投资的沉沙方案,水库沉沙若采用适当的运行方案可以取得良好的沉沙效果,个别沉沙指标如粗沙沉降率高达95.8%,优于沉沙池沉沙,但停机时间长,影响因素众多,运行方式的确定较为复杂。而沉沙池沉沙技术成熟,运行方式简单,停机时间较短,但投资较大。以库代池沉降泥沙在经济与技术方面具有一定的可行性。

Comparison on Desilting Methods of Liuhong Power Station

Reservoir operation mode and desilting effects of desilting chamber and reservoir itself was investigated,by comparing sedimentation rate,sand amount that passing the turbines,downtime and influence factors,the two desilting methods was analyzed and evaluated. Results indicates the reservoir desilting,which can greatly save investment,would achieve good desilting results by taking appropriate operation way,certain index such as coarse sand sedimentation rate can reach up to95. 8%,better than desilting chamber’ s rate,but longer downtime,complicated influence factors and operation is considerable; while as a mature technology,the desilting chamber has characteristic of easy operation,less downtime,but more investment. Therefore in terms of technical and economic perspective,it is feasible for reservoir desilting to replace desilting chamber.