【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。更多还原

【Abstract】 In this paper,according to Weibull theory and the distribution function of micr odefects,A damage variable is defined.The damage evolution equation of microdefe cts is obtained by means of it.This equation not only characterizes the irrevers ible kinetic process of damage evolution,but also establishes the direct relatio nship between the micro-mechanism of damage evolution,e.g.initiation,growth and transmitting,and the degradation of rock mass.Furthermore,The damage and fractu re criterion of Surrounding Rock of Rock drift Blasting is presented on the basi s of the damage theory.更多还原