南欧江七级水电站石料源方案比选

Comparison and Selection of the Rock Material Sources in Nam Ou 7 Hydropower Station

混凝土面板堆石坝料场选择受料场的储量、剥采比、开挖边坡和石料质量、开采单价、运输单价及运距等多因素的影响。针对南欧江七级水电站面板堆石坝的石料源选择问题,根据工程条件选择了备选石料场,初拟了石料场综合使用方案。拟定料场开挖边坡及综合剥采比等开采条件,由物料调运规划,确定了转存量和综合运费。最后,对备选料源方案进行了经济技术综合比选,得到了最优的推荐方案。

Selection of the rock material sources for concrete face rockfill dams is influenced by many factors such as the material reserves, the stripping ratio, the excavation slope, the material quality and quantity, the unit prices of the exploitation and the transportation, and the transportation distance. In this paper, the selection of the rock material sources for the concrete face rockfill dam in Nam Ou 7 Hydropower Station is introduced. Firstly, several optional sources are selected considering the engineering conditions and three comprehensive utilization schemes are proposed. Then, these schemes are compared considering the stripping ratio, the excavation slope, the transferring quantity and the transportation cost. The optimal scheme is finally selected.