地应力作用下偏心装药的炮孔裂隙分布
费鸿禄,刘雨,钱起飞,苏强,孙晓宇

Distribution of Blasthole Fracture in Eccentric Charge Under In-situ Stress
Honglu FEI,Yu LIU,Qifei QIAN,Qiang SU,Xiaoyu SUN
图4 爆生气体驱动的裂纹扩展模型
注: r b为炮孔半径;R 0为粉碎区半径;L 0L 1L分别为初始裂隙长度、扩展裂隙长度和裂隙总长度
Fig.4 Crack propagation model driven by explosive gas