摘要
为了克服传统岩体质量评价方法(RMR法、Q法等)中评价参数难以确定、对质量较差岩体评价结果精度不够等缺陷,介绍RMi法中岩块单轴抗压强度σc与节理裂隙参数Jp的确定思路,对其进行优化,并将其与Hoek-Brown失效准则进行有效结合。结合工程实例对得到的围岩类别及岩体力学参数予以验证。研究结果表明:该方法参数确定简单,应用范围广,可精确地实现对不同岩体质量评价及力学参数的估算,其研究成果可为工程设计施工提供重要依据。
In order to coincide the actual performance and effectively reduce the uncertainty of rock mass parameters and the inaccurate evaluation of weakness rock mass quality by these traditional cavern rock quality evaluation methods （RMR, Q）, the uniaxial compressive strength of intact rock ac and jointing parameter Jp in RMi （Rock mass index） method were introduced and optimized, and the RMi method was combined with the Hoek-Brown Failure Criterion. Then in order to test its rationality, the RMi was used to a hydropower project of the southwest in China. The results show that the evaluation parameters of this method are easily acquired by the simple indoor test and the field survey, and its engineering application is also more wider than these traditional rock quality evaluation methods. So the research achievements of the RMi can provide the sufficient basis to the design and construction of the engineering.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第5期1375-1383,共9页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(41072218)
关键词
RMi法
参数优化
围岩分类
岩体力学参数估算
Hoek-Brown失效准则
RMi method
parameter optimization
rock classification
estimation of mechanical parameters of rock mass
Hoek-Brown failure criterion
