基于深孔微差爆破应力场的爆破参数优化  

Blasting Parameter Optimization Based on Deep Hole Millisecond Blasting Stress Field

作　　者：邓国梁 唐志恒 韩启民 李晓峰 DENG Guoliang;TANG Zhiheng;HAN Qimin;LI Xiaofeng(Urad Rear Bauner Zijin Mining Co.,Ltd.;Zijin School of Geology and Mining,Fuzhou University;Institute of Explosion Technology,Fuzhou University)

机构地区：[1]乌拉特后旗紫金矿业有限公司,内蒙古自治区巴彦淖尔市015000 [2]福州大学紫金地质与矿业学院 [3]福州大学爆炸技术研究所

出　　处：《现代矿业》2024年第2期80-85,91,共7页Modern Mining

基　　金：国家自然科学基金项目(编号:52109124)。

摘　　要：为克服矿房大直径深孔微差爆破存在的不足,根据波动学理论,依据柱状药包单孔爆破应力传播衰减规律,圈定了微差爆破前后起爆孔距和延期时间范围,进一步推导出两孔微差爆破的叠加应力场函数解析式。在此基础上,依据Mises准则反推得出孔网参数与延期时间计算公式。通过LS-DYNA模拟计算和现场工业试验,对比应力场分布情况和实际爆破效果,验证了理论分析的合理性。In order to overcome the shortcomings of large diameter deep hole millisecond blasting in underground mine,according to the theory of wave theory,based on the attenuation law of stress propaga-tion of single hole blasting with cylindrical charge,the range of initiation hole distance and delay time be-fore and after millisecond blasting are delineated,and the superposition stress field function of two hole mil-lisecond blasting is further deduced.On this basis,the calculation formula of hole network parameters and delay time is deduced according to Mises criterion.The rationality of the theoretical analysis was verified by comparing the stress field distribution and the actual blasting effect through LS-DYNA simulation calcula-tion and field industrial test.

关 键 词：采场深孔爆破 微差爆破 爆破应力场 爆破参数 

分 类 号：TD235[矿业工程—矿井建设]