【作者】 冀东； 吕三和； 姜德鸿； 闫强刚； 李文光；

【Author】 JI Dong;LU Sanhe;JIANG Dehong;YAN Qianggang;Li Wenguang;Qingdao Geotechnical Investigation and Surveying Research Institute;Geotechnical Engineering Technology Center of Qingdao;School of Civil and Environment Engineering,University of Science and Technology Beijing;Sanshandao Gold Mine,Shandong(Laizhou) Gold Group Co.,Ltd.;

【机构】 青岛市勘察测绘研究院； 青岛岩土工程技术研究中心； 北京科技大学土木与环境工程学院； 山东黄金矿业(莱州)有限公司三山岛金矿；

【摘要】 对深部开采矿山岩体进行质量评价时,RMR体系在考虑深部岩体质量影响因素以及评价指标评分值确定等方面存在不足之处。首先利用连续性细化计算方法对传统RMR法中岩石单轴抗压强度、RQD、节理间距、地应力等指标进行了修正,得到了评价指标与其评分值之间的拟合回归曲线以及连续性方程;其次,在深入分析不良地质因素、深部采矿工艺及其对岩体质量影响机制的基础上,提出爆破震动影响系数及采场暴露面积两个新评分项并建立了M-IRMR体系;最后,借助该体系对三山岛金矿深部采掘工程岩体质量进行了评价。研究对于深部矿山岩体工程的稳定性评价具有一定的指导与借鉴意义。更多还原

【Abstract】 Owing to its deficiency in considering influence factors of deep rock mass quality and determination of evaluation index values,the traditional RMR method has many limitations in the quality evaluation of deep mining rock mass.The marking indexes including uniaxial compressive strength of rock,rock quality designation,joint space and in-situ stress in traditional RMR method are firstly revised by calculation method of continuous thinning,regression curves and continuity equations between evaluation indexes and score values are obtained.Secondly,based on the analysis of bad geological factors and deep mining technology influence in rock mass quality,two new indexes including blasting vibration effect coefficient and stope exposed area are put forward;furthermore,M-IRMR evaluation system is established.Finally,the M-IRMR method is applied to the rock mass quality evaluation of Sanshandao gold mine which is a deep mining mine near coast.Achieved results will provide certain guiding significance to stability evaluation of rock engineering in deep mining mine.更多还原