大化水电站混凝土总工程量为146万米~3,共需粗、细骨料200多万米~3。由于红水河流域处于石灰岩地区,电站上、下游附近仅储藏有较少的特细砂,且质量差,因此在浇筑围堰混凝土工程时绝大部分用砂要从150公里外的武 The total amount of concrete for Dahua Hydropower Station is 1.46 million m ~ 3, with a total of more than 2 million m ~ 3 fine aggregates. Due to the fact that the Hongshui River Basin is in the limestone area, only a small amount of ultrafine sand is stored near the upper and lower reaches of the power station, and the quality is poor. Therefore, most of the sand used for pouring cofferdam concrete should be from 150 km away from Wu