GSI在节理化岩体力学参数评价中的应用-以金川二矿区水平矿柱为例  

Application of GSI in Evaluating the Mechanical Parameters of Jointed Rock Mass——A case study of horizontal ore pillar in No.2 Mine Section of Jinchuan

作　　者：韩现民[1] 李晓[1] 孙喜书 

机构地区：[1]中国科学院地质与地球物理研究所 [2]河北省丰宁满族自治县交通局

出　　处：《金属矿山》2009年第1期25-29,共5页Metal Mine

基　　金：国家973重点基础研究项目(编号:2002CB412702);国家自然科学基金重大项目(编号:50490271)

摘　　要：节理化岩体力学参数是岩体工程稳定性评价和进行数值计算的难点与关键,而岩体强度指标(GSI)正是针对节理化岩体提出的一种用于解决这一问题的岩体分类体系。系统介绍了GSI岩体分类体系和GSI值的确定方法,并结合E.Hoek法确定岩体力学参数的原理和关键技术,对金川二矿水平矿柱的岩体力学参数进行了评价。评价表明,该方法可较准确反映节理化岩体的力学特性,且简单、易行,值得在同类工程中推荐。The determination of the mechanical parameters of jointed rock mass is a difficult and key issue in rock mass engineering stabihty evaluation and numerical calculation. The geological strength index （GSI） is just a classification system for solving this issue. The paper introduces systematically the GSI rock mass classification system and the determination of GSI, and evaluates the rock mechanical parameters of the horizontal Pillars in No.2 Mine Section of Jinchuan by also adopting the principles and key techniques of E.Hoek method for determining rock mechanical parameters. The real case study shows that this simple and practical method can accurately reflect the mechanical properties of jointed rock mass and is worth popularization.

关 键 词：节理化岩体 GSI岩体分类法 水平矿柱 岩体力学参数 

分 类 号：TD327[矿业工程—矿井建设] TU452[建筑科学—岩土工程]