锦屏二级水电站岩石三轴压缩试验分析  

Jinping Second-level Hydropower Station Rock Triaxial Compression Experiment

作　　者：谢华刚[1] 吴玲丽[1] 

机构地区：[1]铜陵学院,安徽铜陵244000

出　　处：《铜陵学院学报》2012年第5期109-111,共3页Journal of Tongling University

基　　金：铜陵学院自然科学基金<岩石三轴压缩试验分析>(编号:2012tlxy14);铜陵学院教学研究项目<应用型本科院校力学可视化教学的探索>(编号:JY12023)成果

摘　　要：结合锦屏二级水电站深埋长隧洞岩体力学特性与围岩稳定性分析研究报告对隧洞开挖岩石三轴压缩的试验结果,运用matlab7.1软件对强度随围压的变化规律进行回归分析,得出不考虑单轴压缩强度拟合的公式更合理,岩石内摩擦角和粘聚力更有效;分析岩石应力-应变关系图,得出峰后软化过程和峰前曲线变化与围压没有直接关系,围压的增加只会提高残余强度;通过岩石强度与围压的拟合公式推求深部岩石参数成为可能,从而会更好地为现场施工提供一定的依据,减少岩爆的发生率。The main content of the paper studies the variation of the rock parameters in triaxial compression conditions.Combined Jinping second-level hydropower station long tunnel of rock mass mechanics characteristics and stability of analytical studies about the tunnel excavation rock triaxial compression tests results,using matlab7.1 software to study the strength of the variation with confining pressure regression analysis,without considering the uniaxial compression strength fitting the formula is more reasonable,the rock angle of internal friction and the cohesive are more effective;Hanalysis of rock stress-strain diagram obtained that peak after softening process and the curve of peak before is not directly related with the confining pressure,confining pressure increase will improve the residual strength;Through the rock strength and confining pressure fitting formula of calculating deep rock parameter becomes possible,Which will provide a basis to reduce the incidence of rockburst for the site construction.

关 键 词：力学参数 线性回归 三轴压缩 试验研究 

分 类 号：TU45[建筑科学—岩土工程]