张河湾电站垫层料变形模量试验研究  

Experimental Study on Deformation Modulus of Bedding Materials in Zhanghewan Pumped-Storage Power Station

作　　者：邹武 包磊[2] 刘琼[2] 陈建飞[2] 

机构地区：[1]中国葛洲坝集团三峡实业有限公司,湖北宜昌443002 [2]三峡大学土木与建筑学院,湖北宜昌443002

出　　处：《南水北调与水利科技》2011年第5期89-91,98,共4页South-to-North Water Transfers and Water Science & Technology

摘　　要：变形模量是衡量岩土工程力学特性的一个重要指标,现场压板荷载试验计算变形模量是最直接有效的方法。河北张河湾抽水蓄能电站上水库边坡施工开挖后全强风化细砂岩出露较多,基岩裂隙和节理发育,对沥青混凝土面板和库岸基础的稳定性影响较大,通过对张河湾抽水蓄能电站上水库5号沟坝体填筑垫层料的颗粒级配、密度及含水率、渗透和变形模量的试验研究,校核了垫层料的承载能力及抵抗变形的能力,了解垫层料的应力位移特性,从而为坝体垫层料的安全稳定分析提供科学依据。Deformation modulus is an important indicator to measure the mechanical properties of geotechnical engineering. After excavating the reservoir slope on Hebei Zhanghewan Pumped-Storage Power Station, all weathered sandstone outcropped a lot, bedrock cracked and jointly developed, which made a big impact on the stability of asphalt concrete panel and reservoir bank base. By testing the particle size distribution, density,moisture content, penetration and deformation modulus of the filled bed- ding materials for ditch dam No. 5 of the reservoir on Zhanghewan Pumped-storage Power Station, we have checked the carrying and deformation resisting capacity of bedding materials, luther understood their stress-strain characteristics and thus provided a scientific basis for the analysis of safety and stability of the dam bedding materials.

关 键 词：变形模量 沉降相对稳定 不均匀系数 曲率系数 垫层料 

分 类 号：TV74[水利工程—水利水电工程]