西北地区多沙河流水电站防沙及冲沙试验研究  

Experiment Study on Sediment Control and Sediment Discharge of Hydropower Station on Sediment-Laden River in Northwest China

作　　者：刘艳芳[1] 杨校礼[2] 张兴红[3] 

机构地区：[1]华北水利水电学院水利职业学院,河南郑州450008 [2]河海大学水利水电学院,江苏南京210098 [3]黄河水利委员会防汛办公室,河南郑州450003

出　　处：《人民黄河》2011年第12期22-23,26,共3页Yellow River

基　　金：国家自然科学基金资助项目(51179057)

摘　　要：以洮河峡城水电站为例,对西北地区多沙河流水电站防沙及冲沙效果进行了实体模型试验。结果表明:①站进水口前合理设置拦沙堰和导沙坎,泄洪冲沙闸进行敞泄拉沙的效果良好,拦沙堰前无大量泥沙淤积;②在电站引水口下方合理设置排沙道并择机排沙,在排沙道进口前能形成"门前清",拉沙效果良好。同时,建议定期开启排沙道进行拉沙,确保排沙道畅通。Taking Xiacheng Hydropower Station in Taohe River as an example, we had done the sediment control and sediment eject effect of physical model experimental study of sediment-laden river in Northwest China. The results show that, a）in the power station entrance, setting up reason- able sediment detention weir and sediment guiding dike can play a role in promoting the sediment discharge, without a large sediment deposition before the sediment detention weir; b）under the power station water intake, setting up reasonable sediment eject way, and choosing a good chance to eject sediment in the entrance of sediment way, which can form ＂the clear front＂, have a good effect on sediment eject. Meanwhile, it suggests that we periodically open the sediment eject way to discharge sediment, and ensure the sediment eject way clear.

关 键 词：实体模型 拦沙堰 导沙坎 防沙 水电站 多沙河流 

分 类 号：TV131.6[水利工程—水力学及河流动力学] TV697.3