阿海水电站枢纽布置设计综述

A Summary of the Layout Design of the A'hai Hydropower Project Complex

阿海水电站工程枢纽由碾压混凝土重力坝、左岸溢流表孔、左岸泄洪冲沙底孔、右岸冲沙底孔、坝后主副厂房等组成,枢纽布置合理紧凑。碾压混凝土坝置于横向谷、砂岩与板岩互层状坝基岩体,横向谷互层基岩状对坝基防渗、坝肩边坡稳定有利。X型宽尾墩+跌坎+消力池的消能方式,能减小冲击和脉动,提高消能效率。

A＇ hai hydropower project complex consists of a roller compacted concrete gravity dam, left bank overflow crest outlets, left bank bottom flood discharge and flushing outlets, right bank bottom flushing outlets, a powerhouse and an auxiliary plant at dam toe. The project complex is laid out in a rational and compact way. The roller compacted concrete dam is founded on sandstone and slate interbedded bed rock mass in a transversal valley, which is favorable to both dam foundation seepage control and dam abutment slope stability. The way of energy dissipation by type X flaring pier ＋ step down floor ＋ plunze pool can reduce impact and impulse, thus improving efficiency of energy dissioation.