摘要
Abstract
Excavated materials are used to fill the main dam of the upper reservoir in the Yixing Pumped Storage Power Station .The exposed bedrock contains Wutong and Maoshan group sandstone mixed with mudstone .According to the characteristics of these two groups of lithology , it studies the collapsible deformation of rockfill materials which contain high content of mudstone and low soften -ing coefficient .It also analyses the effect of dam deformation due to the rockfill materials of additional settlement of the sandstone mixed with mudstone under longtime submerged condition .The experimental results shows that the coefficient of collapsibility of the sandstone mixed with mudstone rockfill materials is less than 1.5%.The rockfill materials of this project don't have obvious collaps-ibility and the collapsibility is closely related to their saturated compressive strength .The collapsibility index of the rockfill materials is in a common range .After taking seepage control and drainage system , the rockfill materials does not have the possibility on wide range of saturation during operation of the completed main dam .The research results provide scientific bases for the full utilization of excavated materials from the basin of the reservoir to reduce the engineering investments .关键词
堆石料/湿陷变形/上水库主坝/江苏宜兴抽水蓄能电站Key words
rockfill materials/collapsibility/main dam/upper reservoir/yixing pumped-storage power station分类
建筑与水利
