基于钻孔岩芯岩石质量指标和岩体块度指数岩体质量分级对比应用  

Comparative Study of Rock Block Quality Classification Based on Drill Core Rock Quality Index and Rock Mass Index

作　　者：刘震 尹延天 蒋翔 LIU Zhen;YIN Yantian;JIANG Xiang(Shandong Gold Group Co.,Ltd.Deep Shaft Mining Laboratory,Laizhou 261400,China;Intelligent Mining Key Laboratory of Shandong Province Deep-sea and Deep-Earth Metal Mine,Jinan 250000,China;Jiaojia Gold Mine of Shandong Gold Mining(Laizhou)Co.,Ltd.,Laizhou 261400,China)

机构地区：[1]山东黄金集团有限公司深井开采实验室,山东莱州261400 [2]山东省深海深地金属矿智能开采重点实验室,山东济南250000 [3]山东黄金矿业(莱州)有限公司焦家金矿,山东莱州261400

出　　处：《矿业工程》2021年第6期5-8,12,共5页Mining Engineering

摘　　要：不同的岩体质量等级需采用不同的支护措施,对岩体质量进行评价是保障矿山安全生产的重要环节。常用的Q系统评价法、RMR分级法与BQ分级法等体系分级法虽更加准确,但部分参数难以获取,可以在生产过程中用指标法先行进行简单分级。利用岩石质量指标(RQD)和岩体块度指数(RBI)两种单一指标法对焦家金矿工勘孔进行了简单的岩体质量分级。两种指标法的分级结果大部分较为一致,结果表明,焦家金矿深部盲竖井区域大部分岩体质量为中等的Ⅲ类岩体,岩石较为完整,仅个别深度井壁需要重点支护。通过对比两种分级方法的结果发现:相比岩体块度指数,岩石质量指标存在一定的局限性,岩体块度指数在一定程度上更能反应岩芯的真实破碎状态,在岩石质量分级过程中更准确一些。在今后的生产工作中值得进一步应用和优化。Different support measures are taken depending on different degrades of rock mass quality.Evaluating rock mass quality is an important link to ensure the safety of mine production of mine.Although the classification methods including commonly used Q system evaluation method,RMR classification method and BQ classification method are more accurate,some parameters are difficult to obtain.The evaluation of rock mass quality is the important link to ensure safe production in mines.Although the system classification method is more accurate,some parameters are difficult to obtain.The index method can be used to perform simple classification in the production process.Utilize two single index methods of the rock quality designation(RQD)and the rock block index(RBI)to conduct simple rock mass quality classification for Jiaojia Gold Mine.The classification results of two index methods are relatively consistent in most parts.The results show that most of the rock mass in the deep blind shaft area of the Jiaojia Gold Mine is of medium type III rock mass with relatively complete rocks,and only a few deep shaft walls need key support.By comparing the results of two classification methods,it is found that compared with the rock mass index,the rock quality index has certain limitations.To a certain extent,the rock mass index can better reflect the true broken state of the core,and is more accurate in the rock quality classification process.It is worthy of further application and optimization in future production work.

关 键 词：岩体质量分级 岩石质量指标(RQD) 岩体块度指数(RBI) 焦家金矿 

分 类 号：TU457[建筑科学—岩土工程]