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.
出处
《人民黄河》
CAS
北大核心
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)
关键词
实体模型
拦沙堰
导沙坎
防沙
水电站
多沙河流
physical model
sediment detention weir
sediment guiding dike
sediment control
hydropower station
sediment-laden fiver
作者简介
作者简介：刘艳芳（1976-），女。河南尉氏人，讲师，研究方向为水力学及工程水文学。E-mail：liuyanfang818@sohu．com
