Study on Stemming Length of the Top of Blast Hole by ANSYS/LS-DYNA

摘要：

　　By the research of blasting effect and influence distance to worked-out section,combined with the mechanics target of upside rock of worked-out section and the thickness of security roof,blasting mechanism theory of worked-out section,we use the numerical simulation software LS-DYNA to analyze the blasting effect of Wujiata open-pit coal mine on the area of blast hole stemming length.We obtained the tamping length of shot hole top which achieved the optimal blasting effect.When the step height is 12 m,the shot hole top tamping length selecting among 4 ~5 m is quite reasonable.When the step height is 24 m,the shot hole top tamping length selecting among 7 ~ 8 m is quite reasonable.It has provided the scientific basis for safe mining of Wujiata worked-out section,and has similar situation to provide the reference value for other strip mines.

关键词： goaf Wujiata open coal mine LS-DYNA blasting result

作者: Deng Wei Song Ziling Qi Chuanyin Guo Jing

作者单位: College of Mining Engineering, Liaoning Technical University, Fuxin, 123000, China

会议类型: 国际会议

会议名称: International Symposium on Rock Mechanics and Mine Dynamic Disaster Prevention(岩石力学与矿井动力灾害防治国际学术研讨会)

会议地点: 辽宁阜新

会议语种:英文

页码: 255-261

在线出版日期: 2013-07-13（万方平台首次上网日期，不代表论文的发表时间）