修正RMR法在地下洞室围岩分类中的应用研究  

Application Study on Underground Caverns Surrounding Rock Classification Based on the Revised RMR Method

作　　者：齐三红[1] 杨继华[1] 郭卫新[1] 娄国川[1] 

机构地区：[1]黄河勘测规划设计有限公司,郑州450003

出　　处：《地下空间与工程学报》2013年第S2期1922-1925,共4页Chinese Journal of Underground Space and Engineering

摘　　要：RMR法是当前常用的围岩分类方法之一,但当围岩中存在多组不同性状的节理时,节理间距、性状及方向修正系数3项指标的评分会出现标准不统一的问题。通过综合考虑多组节理的影响,对此3项指标的评分进行了修正,提出了加权平均的评分计算方法,对每组节理赋于不同的权重,由此获得了符合实际情况的修正RMR围岩分类方法,并成功应用到了厄瓜多尔CCS水电站地下厂房围岩分类中。相关研究方法可以为类似工程围岩分类提供参考。Currently,RMR is one of the commonly used methods in surrounding rock classification. But there is a problem of uniform stadards for the three indexes including spacing,characteristic and revised coefficinet of joints when there are different groups of joints. The scores of three indexes are revised by considering the influence of different groups of joints,the score calculation method with weighted average is proposed by assigning different weights to each group of joints,the surrounding rock classification method of revised RMR is obtained which meets the actual situation,and was applied to the underground powerhouse surronding rock classification succesfully for CCS hydropower station in Ecuador. The study methods can be referred to surronding rock classification for similar projects.

关 键 词：地下洞室 围岩分类 RMR法 修正 

分 类 号：TU45[建筑科学—岩土工程]