白鹤滩水电站料场补充开采规划优选设计

为解决白鹤滩水电站料场有用料储量不足的问题,依据储量复核结果,重点考虑现场地质条件、开挖面貌、扩挖时机、施工条件、经济性等因素,对补充开采规划方案进行了优选设计,并提出了3个补充开采规划方案。依据有用料储量、扩挖时机、施工条件、经济性4项评价指标,运用线性加权和法对3个方案进行了对比分析。结果表明,方案3为最优的规划方案,其扩挖后能增加有用料380万m3,可确保大坝混凝土工程骨料的供应,保障白鹤滩水电站的顺利建设。

Design and optimization of supplementary mining plans for aggregate storage in Baihetan Hydropower Station

To solve the shortage of useful materials in Baihetan Hydropower Station aggregate storage, taking the site geological conditions, excavation features and time, construction conditions, and economy into consideration, three supplementary mining scheduling programs are designed and optimized based on the re-examined results of the storage. With the help of linear weighted sum(LWS)method, the proposed three mining plans are analyzed for comparison based on four evaluation indexes, including the reserved useful materials, excavation time, construction conditions, and economy. The result shows that the third exploitation plan is the best that can increase 3. 8 million cubic meters of useful materials after excavating. It ensures the supply of aggregate content for the dam concrete program and guarantees the construction of Baihetan Hydropower Station.