摘要
岩爆是岩体高地应力区的一种重要地质现象,是地下工程建设中比较关注的重要工程地质问题之一。采用可拓评判方法,选取岩石单轴抗压强度σc、洞室最大切向应力σθ、岩石单轴抗拉强度σt和弹性能量指数Wet作为岩爆评价的主要因素,应用物元概念和关联函数建立了岩爆等级评价的物元模型,针对中国工程已发生的实例进行分析,计算结果与实际情况符合,说明该岩爆预测模型具有一定的应用价值。
Rock burst is one important geological phenomenon of rock mass in high geostress region. It is one of the engineering geological issues which shall be focused in underground engineering construction. The rock burst can be assessed by extension theory with main factors such as uniaxial compressive strength σcof rock,maximum tangential stress σθof cavern,uniaxial compressive strength σtof rock and elastic energy index Wet,etc. Both formal concept and dependant function are applied for building the formal model for assessment of the rock burst grade. Based on actually occurred practice in China,analysis is performed. The calculation result is in compliance with the actual case. This presents that the rock burst forecast model is with certain value of application.
出处
《西北水电》
2016年第2期38-40,44,共4页
Northwest Hydropower
基金
新疆水利水电工程重点学科资助(xjzdxk-2010-02-12)
新疆科技支撑项目(201233132)
关键词
岩爆
分级预报
可拓理论
简单关联函数
等级变量特征值
rock burst
grading precast
extension theory
simple dependent function
characteristic value of grade variable
