江边水电站首部枢纽引水防沙设计研究  

Design on Sediment Control and Water Diversion System of Jiangbian Hydropower Station Project

作　　者：黄维[1] 陆欣[1] 史彬[1] 

机构地区：[1]中国水电顾问集团华东勘测设计研究院,浙江杭州310014

出　　处：《水力发电》2011年第8期28-30,共3页Water Power

摘　　要：江边水电站的泥沙问题突出。通过水工模型试验对该枢纽的相关泥沙问题展开了研究。试验结果表明:在原枢纽布置方案的基础上增设扰沙坎,可以有效地降低沙面高程,保证进水口"门前清";汛期限制水位运行,当流量或淤积达到一定程度时停机拉沙,可以保证水库淤积平衡后调节库容最大;电站可不设置沉沙池。库尾张家沟泥石流的主要影响是增大干流局部时段的含沙量,在敞泄拉沙情况下,淤积的泥沙可以被冲出库外。As the serious sediment problem in Jiangbian Hydropower Station, the hydraulic model tests are conducted to study these problems. The experimental results show that： （i） adding additional sediment disturbance barrier ean reduce the sand deposition in the entrance area of the sediment flushing sluice and make the water clear in front of water intake; （ii） Limiting operation level in flood season and flushing sediment after shutting down generating units when the flow or deposition reaching a certain scale, the maximum regulating capacity can be ensured under the balaneed state of silting and scoring; and （iii） The silt basin is not necessarily to set. The main influence of Zhangjiagou＇s mudslides is to enlarge sediment concentration in the main stream at some local time. The sand deposition can be flushed out of the reservoir when transporting sand by means of ungated flow.

关 键 词：引水防沙 扰沙坎 水库运行方式 泥石流 江边水电站 

分 类 号：TV145[水利工程—水力学及河流动力学] TV673