两河口水电站第一阶段蓄水方案比选研究

Comparison and Selection of First-Stage Impoundment Schemes of Lianghekou Hydropower Project

两河口水电站是雅砻江中上游龙头水库,水库蓄水深度约285 m,大坝为心墙土石坝。电站蓄水分为三个阶段四期蓄水,其中第一阶段蓄水深度约80 m。通过河道水文特性及径流来水分析、闸门挡水风险分析、生态供水要求、下闸后度汛要求、枢纽工程施工形象面貌、封堵设计与施工、移民安置等进行综合比较分析,确定了第一阶段的蓄水方案,并达到了预期蓄水的目的。

Lianghekou Hydropower Project has the leading reservoir in the middle and upper reaches of the Yalong River,with a storage depth of about 285m.And the main dam is a rockfill dam with core.The full impoundment of Lianghekou Hydropower Project is divided into three stages and four phases,with the first-stage depth of about 80m.Based on the comprehensive analysis of river hydrological characteristics and runoff,risk analysis of gates waterhead,ecological flow requirements,flood control requirements after gate closure,current constuction status of Project,plugging design and construction,resettlement,etc,the first-stage impoundment was put forward and the expected impoundment plan achieved.