摘要
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。通过该损伤变量推导的损伤演化方程,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,根据损伤理论建立了岩巷围岩在爆破应力波作用下的损伤断裂判据。
In this paper,according to Weibull theory and the distribution fimction 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, e. g. initiation, growth and transmitting, and the degradation of rock mass. Furthermore, The damage and fracture criterion of Surrounding Rock of Rock drift Blasting is presented on the basis of the damage theory.
出处
《黄金》
CAS
北大核心
2005年第8期22-24,共3页
Gold
关键词
岩巷爆破
国岩损伤
微缺陷
损伤判据
rock drift blasting, surrounding rock damage, microdefects, damage criterion
