掏槽控制爆破动焦散试验研究  

Dynamic Caustics Experiment of Cut Hole Control Blasting

作　　者：庄金钊[1] 杨仁树[1] 刘继敏[1] 侯敬峰[1] 

机构地区：[1]中国矿业大学力学与建筑工程学院,北京100083

出　　处：《中国矿业大学学报》2003年第3期255-258,共4页Journal of China University of Mining & Technology

摘　　要：运用焦散线法基本原理 ,建立了性能稳定的爆炸加载测试系统 .用普通药包掏槽爆破和切缝药包掏槽控制爆破进行了透明材料模型的透射式动焦散试验对照试验 ,结果表明 ,在相同药量的情况下 ,普通药包掏槽爆破的裂纹在各炮孔周围为随机分布 ,裂纹数目多且较短 ,各掏槽炮眼间没有形成贯通裂纹 ,其焦散斑随裂纹分布 ;采用切缝药包掏槽控制爆破的裂纹主要沿切缝方向分布且较长 ,各掏槽炮眼间形成贯通裂纹 ,焦散斑主要分布在切缝方向上 .最后探讨了掏槽控制爆破的机理 .A blast loading measuring system with stable performance was established based on the principle of dynamic caustics. The comparison explosion experiment for the two transmitted dynamic caustic experiment of model with transparent material was made to use normal cartridge and slotted cartridge. The results show that at the conditions of the same quantity the distributing of cracks is random, and there are many short cracks around the blast holes and not perforation cracks between the blast holes, and its caustics spot distributes with cracks by using normal cartridge of cut hole blasting; it has adverse results in the experiments of slotted cartridge. Finally, the mechanism of control blasting with cut hole was also discussed.

关 键 词：焦散线法 爆炸加载测试系统 掏槽 控制爆破 贯通裂纹 动焦散 巷道掘进 

分 类 号：TD263.31[矿业工程—矿井建设] TD235.37