论文部分内容阅读
一、概述南桠河电站是位于四川石棉县大渡河支流南桠河上,库容仅七万方的引水式电站。引水隧洞进口到调压井全长7016米,调压井到厂房900米。站内装有高水头混流式水轮发电机组三台,总容量4×3万千瓦。南桠河流多年平均流量38米~3/秒,多年平均含沙量0.6公斤/立方米,最大含沙量13公斤/立方米。泥沙中石英及长石各占总量的40％,形状为稜角形和牛稜角形。若按设计标准,沉沙池沉降大于0.25毫米粒径泥沙的能力为80％,小于0.1毫米粒径的泥沙为50％时,最大过机含沙量为4.6公斤/米~3,多年平均过机含沙量为0.21公斤/米~3。
First, an overview Nanxunhe Power Station is located in Sichuan Shimian Dadu tributary of the Nanxun River, storage capacity of only 70,000 of the diversion-type power station. Diversion tunnel imported surge tank full length of 7016 meters, pressure surge wells to the plant 900 meters. Station equipped with high head Francis turbine unit three, the total capacity of 4 × 30,000 kilowatts. Nanxun rivers flow for many years the average flow of 38 m ~ 3 / sec, the average annual sediment concentration of 0.6 kg / cubic meter, the maximum sediment concentration of 13 kg / cubic meter. Sediment of quartz and feldspar each account for 40% of the total, the shape of angular and bovine angular. If according to the design standard, the sedimentation tank has the capacity of settling sediment larger than 0.25mm, the capacity of sediment is 80%, and the sediment whose particle size is less than 0.1mm is 50%, the maximum sediment concentration is 4.6kg / m ~ 3, The average sediment concentration of 0.21 kg / m ~ 3.