宜兴抽水蓄能电站上库主坝堆石料的特殊研究  

Study on characteristics of rockfill materials for main dam of upper reservoir of Yixing Pumped Storage Power Station

作　　者：肖贡元 

机构地区：[1]上海勘测设计研究院,上海200434

出　　处：《水利水电科技进展》2005年第6期49-51,59,共4页Advances in Science and Technology of Water Resources

摘　　要：针对宜兴抽水蓄能电站上库主坝建在倾斜基础面上的实际情况,对坝体堆石料特性进行了两项特殊研究.现场试验研究表明各种堆石料与基岩面之间的抗剪强度均小于该种堆石料本身的抗剪强度,加大基岩面的粗糙度有利于提高该项抗剪强度.对砂岩夹泥岩堆石料浸水后变形特性的室内试验研究表明其湿陷特性指标处于一般堆石料常见值范围内;评价堆石料浸水饱和后的表现,不能只看堆石料软化系数的大小,还要考察堆石料饱和抗压强度等力学性能指标.研究成果为充分利用上库库盆开挖料筑坝并降低工程投资提供了科学依据.Two special issues were studied on rockfill materials for the main dam, which was built on an inclined bedrock surface. The result of in-situ tests indicates that the shear strength along the interface of tested rockfill materials and bedrocks is lower than that between rockfill materials themselves, and that the shear strength would be higher if the roughness of the bedrock surface is increased. Laboratory tests on the sandstone rockfill materials intercalated with mudstones show that the indexes of wetting-induced settlement are within the range of common rockfill materials, and that the evaluation of behaviors of rockfill materials after wetling saturation should depend not only on their softening coefficient, but also on their saturation compressive strength, and etc. The research result provides a scientific basis for dam construction by full use of rock materials excavated from the upper reservoir basin. Furthermore, the investment in the project can be reduced.

关 键 词：混凝土面板堆石坝 堆石料 倾斜基础面 抗剪强度 湿陷变形 宜兴抽水蓄能电站 

分 类 号：TV41[水利工程—水工结构工程]