摘要
在充分考虑岩体损伤、地层压力影响的基础上，运用损伤和断裂理论，结合预裂成缝的三个阶段：开裂、扩展和止裂，系统分析了预裂成缝的机理。研究表明，岩体的损伤和地层压力作为岩体成缝的影响因素不容忽视，预裂成缝是应力波和爆生气体综合作用的结果。
The effect of rock damage and ground pressure being fully considered in combination with the three stages of rock cracking by presplit blasting, i.e. crack initiation, crack extension and crack arrest, the mechanism of cracking is analyzed systematically. It is indicated that the rock damage and ground pressure are of significance to rock cracking by blasting and the essence of comprehensive effect of explosion gas and stress wave is revealed.
出处
《爆破器材》
CAS
北大核心
1999年第6期20-24,共5页
Explosive Materials
关键词
岩巷
预裂成缝
应力强度因子
岩石力学
井巷掘进
rock tunnel, cracking by presplit blasting, stress intensity factor, damage
