考虑地应力损伤的岩体质量分级和岩体力学参数的确定  

Rock mass quality classification based on in-situ stress damage and determination of mechanical parameters

作　　者：刘焕新[1] 郭奇峰[1] 郭乔盛[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《中国矿业》2013年第6期114-117,共4页China Mining Magazine

基　　金：国家自然基金重点项目资助(编号:51034001)

摘　　要：传统的RMR岩体质量分类法未考虑地应力的影响。将考虑地应力损伤并进行修正的IRMR岩体质量分类法应用于三山岛金矿-510m、-555m、-600m三中段各巷道和采场岩体中,并与RMR分类结果进行对比,其中-510运输巷、553#和601#采场评价结果与RMR分类法一致,其余均差一级,表明进行地应力修正的IRMR评价结果在工程上是偏于安全的,评价结果更为合理有效。用所得IRMR评分值确定各中段岩体的力学参数,为深部岩体工程稳定性分析与采场结构参数的优化等数值模拟研究提供了基础依据。Traditional RMR rock mass quality classfication do not consider the effect of in-situ stress. The IRMR rock mass quality elassfieation which have considered the effect of in-situ stress and made the correction had been applied in the three middle＇s roadways and stopes of --510m,- 555m,- 600m in Sanshan island gold mine. Compared with the results of RMR rock mass quality classfication, we can find that most results of IRMR rock mass quality classfication are worse than former,but the rock mass quality of --510 travelling roadway, 553^# stope and 601 ^# stope are at the same level in two evaluation system. So, it is more safe in tackling high iwsitu stress rock mass engineering using IRMR rock mass quality classfication,and it more resonable and effective. We had used the IRMR grade to determine the rock mechnical parameters in all the three middle,it can provide a basic evidence for numerical simulation study on optimization of the structural parameters of the deep stope and engineering disaster prevention and control, and so on.

关 键 词：地应力 IRMR 岩体质量 岩体力学参数 

分 类 号：TD313[矿业工程—矿井建设]