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岩巷爆破围岩损伤演化方程及稳定性分析
Stability analysis of surrounding rock and a equation of damage evaluation of rock drift blasting
【摘要】 本文以岩体微观缺陷的分布和Weibull理论为基础 ,定义了一个损伤变量。通过该损伤变量推倒的损伤演化方程 ,不仅表征了岩体的不可逆动态损伤演化过程 ,而且和微观缺陷的起裂、扩展和传播以及岩体性能的劣化建立了联系。并且 ,根据损伤理论对岩巷爆破围岩的稳定性进行了分析
【Abstract】 In this paper, according to Weibull theory and the distribution function of microdefects, a damage variable is defined. The damage evolution equation of microdefects is obtained by means of it. This equation not only characterizes the irreversible kinetic process of damage evolution, but also establishes the direct relationship between the micro-mechanism of damage evolution, i.e. initiation, growth and transmitting, and the degradation of rock mass. Furthermore, stability of surrounding rock of rock drift blasting is analysed on the basis of the damage theory.
【关键词】 岩巷爆破;
围岩损伤;
稳定性分析;
微缺陷;
【Key words】 rock drift blasting; surrounding rock damage; stability analysis, microdefects;
【Key words】 rock drift blasting; surrounding rock damage; stability analysis, microdefects;
- 【文献出处】 河北建筑科技学院学报 ,Journal of Hebei Institute of Architectural Science and Technology , 编辑部邮箱 ,2004年02期
- 【分类号】TD235
- 【被引频次】7
- 【下载频次】166