摘要
对锦屏二级水电站的绿片岩试样进行常规力学试验研究,包括单轴压缩变形试验和三轴压缩变形试验等,在常规试验数据分析的基础上,进行绿片岩单轴及三轴流变试验,并对试验过程及试验结果进行分析。通过过渡蠕变法结合试验成果对绿片岩试样的长期强度特性进行研究,得到本次绿片岩试样长期强度基本为瞬时强度的80%左右。另外,还通过分析过渡蠕变法的不足,并结合蠕变试验成果,提出一种新的长期强度定量分析方法,将其应用到本次长期强度分析中,提出有意义的观点。
A series of conventional mechanical laboratory tests such as uniaxial compression tests and triaxial compression tests were carried out to analyze mechanical properties of green schist in Jinping II hydropower station. Based on the analysis of conventional test results, uniaxial and triaxial rheological tests of green schist were designed and completed successfully. On the basis of the testing data obtained, the long-term strength of green schist were analyzed by transition creep law. Through the analysis, we could find that the long-term strength of green schist is about 80% of instantaneous strength. Moreover, through analyzing the shortcomings of transition creep law, and combining the achievement of creep tests, a new quantitative analysis method of long-term strength was proposed and applied to the analysis of long-term strength, so as to offer a meaningful viewpoint.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2012年第8期1642-1649,共8页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(41072203)
中国博士后基金资助项目(2011M500076)
关键词
岩石力学
绿片岩
力学特性
蠕变试验
过渡蠕变法
长期强度
rock mechanics
green schist
mechanical properties
creep test
transition creep law
long-term strength
