单孔护壁爆破数值模拟  

Numerical simulation for single hole-unilateral blasting

作　　者：肖定军[1] 郭学彬[1] 蒲传金[1] 

机构地区：[1]西南科技大学环境与资源学院,四川绵阳62101

出　　处：《化工矿物与加工》2008年第7期22-24,32,共4页Industrial Minerals & Processing

基　　金：绵阳市科委资助项目

摘　　要：运用LS—DYNA软件对单孔护壁爆破和切缝药包爆破进行了三维数值模拟，结果显示，由于PVC—U套管的存在，作用于孔壁的爆炸应力波峰值被显著削弱，降低率达到30％～46％。并推迟了其到达保留岩体孔壁时问。与传统的切缝药包爆破相比，保留岩体损伤更小。The LS-DYNA software was employed to simulate single hole-unilateral blasting and slit charge blasting. The results obtained in the present study show that peak of pressure have reduced 30% -46% and the time of reaching in the hole wall was delayed. The damage zoom of reaming rock mass was smaller than slit charge blasting.

关 键 词：数值模拟 切缝药包 单孔护壁爆破 

分 类 号：TD235.4[矿业工程—矿井建设]