摘要
碧口水库自１９７５年蓄水至１９９６年汛前，总库容已损失５２％。曾发生过排沙洞被泥沙淤堵，严重威胁电站安全运行的情况。本文通过实测资料分析并结合数学模型计算，对碧口水库行洪期降低水位排沙效果和不同运行方式下的淤积发展趋势进行了多方案的计算与分析，结果表明：通过改变水库汛期运行水位与行洪期的短时间降低水位排沙，较目前运行方式，平均每年多发电量２１００万ｋＷｈ，坝前段减少淤积量约１００万ｔ，并能较明显的减轻机组磨损。
From 1975 to 1996, the capacity of Bikou reservoir had lost 52%. The desilting sluice had been blocked up with silt. It had threatened the operation of power station. Through the analysis of measured records and the calculation of math model, the paper calculated the desilting result under the low water level during flood period. And the paper analysed the silting trend of the reservoir under different operation modes too. The results showed as follows, Through changing the operation water level and short time drawdown, desilting during the flood season, the electrical energy generation of the station will be 21 million kW·h every year more than the nowadays operation mode. The silting sediment will be reduced reuced about 1 million tons. The erosion of water turbine by soil sand will also be reduced.
出处
《水力发电学报》
EI
CSCD
北大核心
1999年第1期59-67,共9页
Journal of Hydroelectric Engineering
关键词
水电站
水库淤积
水库运行
排沙
泥沙淤积
Water power station\ Reservoir deposit\ Operation desilting
