基于统计损伤的岩爆预测  

PROBABILITY PREDICTION OF ROCKBURSTS BASED ON STATISTICAL DAMAGE MECHANICS

作　　者：梁志勇[1] 石豫川[2] 李天斌[2] 

机构地区：[1]辽宁省交通勘测设计院,沈阳110000 [2]成都理工大学环境与土木工程学院,成都610059

出　　处：《工程地质学报》2005年第1期85-88,共4页Journal of Engineering Geology

基　　金：四川省杰出青年学科带头人培养计划资助项目(03ZQ026-045)

摘　　要：基于岩石单轴抗压强度的分布特征,对脆性岩石采用统计损伤的平行杆模型模拟,经岩石全过程曲线拟合,表明了 模型的合理性。进而提出采用平行杆模型模拟地下深埋洞室脆性围岩,推出了不同应力条件下岩体损伤的表达式,从统计损 伤的概念上,利用损伤变量来表征岩爆发生概率。工程实例分析表明该预测方法是有效的。Based on the probability distribution of the uniaxial compressive strength of the rock, the authors present a parallel-pole model of statistical damage to simulate the brittle rock. The calculated stress-strain relationship based on the statistic damage matches well with test results. The parallel-pole model was then used to simulate the surrounding rockmass of a tunnel. The damage variables were derived for different stress conditions. From the concept of statistic damage, the damage variables represent probability of rockbursting.

关 键 词：岩爆预测 岩体损伤 单轴抗压强度 脆性岩石 地下 损伤变量 应力条件 杆模型 平行 统计 

分 类 号：P642.22[天文地球—工程地质学] TU452[天文地球—地质矿产勘探]