摘要
为解决采动岩体数值计算中力学参数问题,基于覆岩三带理论及工程实践,提出了以现场可直接测量的采动岩体完整性指数、三带发育高度为分类指标的采动岩体工程分类法,建立了岩体纵波波速与地质质量指标的关系,推导了Hoke-Brown准则中关键参数的计算公式,实现了采动岩体力学性质的定量评价,总结了采动岩体力学参数取值的一般规律。工程实践表明,该分类方法及力学参数估算方法简便实用,符合工程实际。
In order to solve the mining rock mechanics parameters selection problem, based on the three-zone theory and engineering prac- tice, the paper proposed a classification method for mining rockmass using integrity index and height of three-zone, which could be meas- ured directly, established relationships with the longitudinal wave velocity and geological strength index for rockmass, derived the pricing formula of key parameter in Hoek-Brown criterion, realized quantitative evaluation on mechanical properties of mining rockmass.Ultimate- ly, the author summarized the general rule of parameters selection of mining roekmass.The engineering application showed that this method of classification and mechanical paramete estimation was simple, practical and fitted engineering reality.
出处
《煤炭科学技术》
CAS
北大核心
2014年第1期146-150,共5页
Coal Science and Technology
基金
中国煤炭科工集团西安研究院技术创新资助项目(2013XAYCX025)
关键词
采动岩体
岩体工程分类
Hoke—Brown准则
纵波波速
mining rockmass
rockmass engineering classification
Hoek-Brown criterion
longitudinal wave velocity
