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准静态压力作用下岩体爆破成缝方向与机理的研究
引用本文:高金石,杨军,张继春.准静态压力作用下岩体爆破成缝方向与机理的研究[J].爆炸与冲击,1990,10(1):76-84.
作者姓名:高金石  杨军  张继春
作者单位:西安冶金建筑学院 (高金石,杨军),西安冶金建筑学院(张继春)
摘    要:本文在讨论了现有的爆破成缝理论以后,首先将岩体在爆生气体作用下的成缝过程分为开裂、扩展和止裂三个阶段,建立了这三个阶段的力学模型。然后,着重分析了爆破成缝方向和机理,提出了相应的断裂判据。最后,结合在大理石试块上进行的爆破成缝试验,通过计算分析,验证了本文提出的成缝机理。

关 键 词:准静态压力  岩体爆破成缝  断裂判据

STUDIES ON THE DIRECTION AND MECHANISM OF ROCK BLASTING CRACKING UNDER THE ACTION OF QUASISTATIC PRESSURE
Gao Jinshi,Yang Jun,Zhang Jichun.STUDIES ON THE DIRECTION AND MECHANISM OF ROCK BLASTING CRACKING UNDER THE ACTION OF QUASISTATIC PRESSURE[J].Explosion and Shock Waves,1990,10(1):76-84.
Authors:Gao Jinshi  Yang Jun  Zhang Jichun
Institution:Xian Institute of Metallurgy and Construction Engineering
Abstract:After discussion about the theories of blasting cracking, the rock crac-king process, under the action of gaseous explosion, is divided into three periods which are crack initiation, crack extension and crack arrest, and the mechanical models of these three periods are established in this paper. Then the author emphatically analyses the direction and mechanism of blasting cracking. The corresponding fracture criteria are proposed. Finally, combining with the blasting tests with marble blocks, the cracking mechanism mentioned above is verified by numerical modeling.
Keywords:quasistatic pressure  rock blasting cracking  fracture criterion  
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