锦屏二级水电站岩石单轴压缩试验  

Rock Uniaxial Compression Experiment in Jinping Secondary Hydropower Station

作　　者：谢华刚[1,2] 吴玲丽 

机构地区：[1]铜陵学院土木建筑系,安徽铜陵244000 [2]河海大学岩土工程研究所,江苏南京210098 [3]铜陵天洋工业园投资有限公司,安徽铜陵244000

出　　处：《人民黄河》2012年第4期116-118,共3页Yellow River

基　　金：国家重点工程项目(2005805715);铜陵学院自然科学基金资助项目(2011tlxy31)

摘　　要：结合锦屏二级水电站深埋长隧洞开挖岩块岩石单轴压缩试验结果,对岩石力学参数进行了分析研究。结果表明:岩石力学参数随着深度的增加呈增大趋势,而泊松比和软化系数基本不变化;岩石的应变软化现象随着深度的增加越来越明显,岩石解除地应力后,岩石内部存在的能量在岩石加载破坏的同时得到释放,现场发生岩爆的几率大。Combined with rock uniaxial compression test results of Jinping secondary hydropower station deep buried along tunnel excavation,the rock mechanics parameters were analyzed.The results show that with the increase of depth the rock mechanical parameters are in increasing trend,while the Poisson＇s ratio and softening coefficient are almost no change;with the increase of depth the strain softening of rock is more and more obvious,after the rock stress lifting,there is a certain internal energy in the rock to be released while loading damaged and the probability of in situation rock burst occurrence is large.

关 键 词：力学参数 线性回归 单轴压缩 深埋隧洞 锦屏二级水电站 

分 类 号：TU452[建筑科学—岩土工程]