切缝药包爆破中爆生气体作用的试验研究  

Experimental Study on the Action of Detonation Gas under Cutting Seam Cartridge Blasting

作　　者：杨仁树[1] 陈岗[1] 岳中文[1] 姜琳琳[1] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,北京市100083

出　　处：《煤矿爆破》2009年第4期1-3,共3页Coal Mine Blasting

摘　　要：切缝药包爆破是目前在实际工程中应用的定向断裂控制爆破方法,为更好地研究和使用这种爆破技术,使用高速摄影技术观察模型试件裂纹扩展过程,研究切缝药包爆破中爆生气体的作用机理。试验结果表明,切缝管对爆生气体的约束作用使得沿切缝方向的裂纹扩展得到加强,而爆生气体的准静态压力没有作用于其它方向的裂纹。Cutting seam cartridge blasting is one of the directional fracture controlled blasting methods used in the actual works at present. In order to better study and make use of blasting technology, using the high-speed photography to observe the process of crack growth of model specimen to study the action mechanism of detonation gas in cutting seam cartridge blasting. The experimental results show that the further expansion of the cracks along the cutting direction of cartridge has been strengthened by the restricted detonation gas, while the quasi-static pressure of detonation gas has not worked on the cracks in the other direction.

关 键 词：切缝药包爆破 爆生气体 高速摄影 模型试验 

分 类 号：TD235.373[矿业工程—矿井建设]