RMR法评价体系的修正及工程应用  

CORRECTION OF RMR SYSTEM AND ITS ENGINEERING APPLICATION

作　　者：王乐华[1] 李建荣[1] 李建林[1] 王孔伟[1] 许晓亮[1] 宛良朋[1] 

机构地区：[1]三峡大学三峡库区地质灾害教育部重点实验室,湖北宜昌443002

出　　处：《岩石力学与工程学报》2013年第S2期3309-3316,共8页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(50909052;51079077);教育部重点项目(212114)

摘　　要：现有RMR法评价体系中的单轴抗压强度、RQD值和结构面间距这3个指标都是对某一区间进行评分,且均以保守取值应用于实际工程中。通过选取大量已有工程实践的岩体质量评价数据,对现有RMR法评价体系中的单轴抗压强度、RQD值和结构面间距这3项的评分标准进行分析,对RMR法评价体系中前3项的指标值的评分区间进行修正,并修正评分结果的非线性阶梯变化特点,使评分具有线性连续性。建立指标值与其评分值之间线性关系表达式。将修正结果应用于工程实践,取得较好的评价效果,为岩体质量评价及工程人员提供参考。The three indices of uniaxial compressive strength,RQD value and structural face interval in the existing RMR method evaluation system aim at the grading value of a interval,and are all applied to engineering with the conservative values. By selecting a large number of rock quality evaluation data related to the present engineering projects,the grading standard of the three indices is studied and their grading intervals are corrected. The characteristic of nonlinear step changes of the grading values is corrected,which makes the grading values become linear and continuous. The linear relationship expression between the indices value and grading value is built. The corrected results are applied to the actual projects and get good effect,which can provide a certain reference for the rock mass quality evaluation and the engineers.

关 键 词：岩石力学 RMR法 回归分析 指标修正 线性关系 

分 类 号：TU452[建筑科学—岩土工程]