基于GSI和Q系统岩体力学参数确定方法及应用  

Determination and Application of the Mechanical Parameters of a Rock Mass Based on GSI and Q Systems

作　　者：崔少东[1] 郭书太[1] 高剑锋[1] 

机构地区：[1]中国石油天然气管道工程有限公司,廊坊065000

出　　处：《现代隧道技术》2015年第6期43-47,共5页Modern Tunnelling Technology

摘　　要：地下水封洞库工程中需要对岩体进行稳定性分析,其中最关键的一点是岩体力学参数的选取。岩体力学参数受岩块的力学性质、结构面分布情况、结构面性质以及地下水作用等因素的影响。文章在对围岩分级系统研究的基础上,通过Q围岩分级和GSI围岩分级间的关系,将Q结果引入到霍克-布朗准则中,确定该准则中的各项参数,并将霍克-布朗准则和工程稳定分析软件中常用的摩尔-库伦准则结合,得到了基于该准则的岩体力学参数计算公式。通过工程实例验证了该方法的准确性和合理性,对地下岩体工程的研究具有一定的指导意义。The selection of mechanical parameters is key to carrying out a rock mass stability analysis for a water-sealing underground cavern. Considering that the mechanical parameters of a rock mass are mainly affected by its mechanical properties, structural plane distribution and properties, underground water, etc., and based on the research of the relationship between Q and GSI rock mass classification systems, this paper determines the parameters of the Hock-Brown criterion by introducing the Q system classification. It then proposes a relevant calculation formula for the mechanical parameters under the Hock-Brown criterion based on the combination of the Hock-Brown criterion and Mohr-Coulomb criterion used in engineering stability analysis software.

关 键 词：地下水封洞库 岩体力学参数 围岩分级 

分 类 号：TU452[建筑科学—岩土工程]