摘要
提出了一种新型的断裂控制爆破方法——在炮孔内同时利用不同的偶合介质(水和空气)爆破法。利用空气和水不同的物理特性和传能性质,控制爆炸能量的释放过程及作用方向,从而达到控制断裂方向,以起到崩落一侧而保护另一侧的目的。分析了水和空气不偶合装药爆破对周围介质的作用,通过模拟试验,对爆破后水介质所在方向和空气介质所在方向的应变和损伤分别进行了对比,反映出了介质中的受力和变形情况。实验表明,能够有效地控制裂缝的产生和发展,是一种行之有效的断裂控制爆破方法。
A new method of fracture controlled blasting was presented, which makes use of different coupling mediums （water and gas） to carry blasting in the hole at the same time. Using different physical characteristics and transfer qualities of water and gas, this method can control the releasing process and effect direction of energy to control the fracture direction, which makes it possible to destroy one side of the wall rock and protect the other. The effect of blasting on surrounding medium was analyzed. By experiment, the strain and damage on different medium directions after blasting were compared, and the suffering force and distortion of mediums were reflected. The experiment shows that this kind of method can control the product and development of crack effectively. Therefore, it is an effective fracture controlled blasting method.
出处
《工程力学》
EI
CSCD
北大核心
2006年第A01期40-45,共6页
Engineering Mechanics
基金
国家自然科学基金(10202001)
中科院知识创新工程重大项目(KZCX1-SW-04)
关键词
断裂控制爆破
损伤
偶合
爆炸冲击波
应变
fracture controlled blasting
damage
coupling
explosive shock wave
strain
