摘要
采用“岩样-压机”系统从刚度和能量角度分析了岩爆产生的机理,解释了岩石峰值强度前弹性应变能的存储是岩石产生动力破坏的基本条件。对红透山铜矿矿石和围岩进行了单轴加卸载实验,并在实验的基础上采用弹性应变能指标对该矿的矿体和围岩的岩爆倾向性进行了评价。结果表明,该矿矿体和围岩均具有发生弱或强烈岩爆的倾向性。
The mechanisms of rockburst are analyzed from the aspects of stiffness and energy by using “ sample - machine” system. It is explained that the elastic energy storage before peak strength is the basic condition for rock dynamic failure. The experiments of uniaxial loading and unloading on the ore and wall rock samples from Hongtoushan copper mine are conducted, and rockburst proneness of them are evaluated with elastic strain energy indices. The results show that both ore body and wall rock have weak or strong rockburst proneness.
出处
《矿业研究与开发》
CAS
北大核心
2005年第5期16-18,61,共4页
Mining Research and Development
基金
国家十五科技攻关项目(2001BA906-01-02)
关键词
岩爆倾向性
动态破坏
应变能储存指标
Rockburst proneness, Dynamic failure, Strain energy storage index
