基于连续-非连续模拟的台阶爆破抛掷堆积仿真实验研究  

Experimental study of step blasting throwing accumulation based on continuous-discontinuous simulation

作　　者：雷涛[1,2] 康普林[2] 叶海旺 李宁[1,2] 王其洲[1,2] LEI Tao;KANG Pulin;YE Haiwang;LI Ning;WANG Qizhou(Hubei Key Laboratory of Mineral Resources Processing and Environment,Wuhan University of Technology,Wuhan 430070,China;School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学矿物资源加工与环境湖北省重点实验室,湖北武汉430070 [2]武汉理工大学资源与环境工程学院,湖北武汉430070

出　　处：《实验技术与管理》2023年第5期116-121,共6页Experimental Technology and Management

基　　金：武汉理工大学校级教研项目(W20200107);湖北省重点研发计划项目(2021BCA152);“十三五”国家重点研发计划项目(2020YFC1909602)。

摘　　要：露天台阶爆破的现场试验爆炸时间短,且具有一定的危险性,难以实现爆破过程的细致观测。以某矿山台阶爆破为工程背景,建立颗粒流离散元模型,结合软件LS-DYNA与PFC,基于连续-非连续爆破模型模拟台阶爆破抛掷堆积过程。由于爆破过程中爆炸应力波与爆生气体的作用效果不同,故数值仿真中分别以速度与压力的形式模拟爆炸应力波与爆生气体,并分析爆破过程中岩体裂纹发展分布情况与爆破抛掷堆积效果。通过开展现场爆破实验,验证了模拟结果与现场爆破结果相吻合。In the field test of open-air step blasting,the explosion time is short and there is certain danger,so it is difficult to realize the detailed observation of blasting process.Based on the engineering background of step blasting in a mine,the discrete element model of particle flow is established.Combined with software LS-DYNA and PFC,the throwing and stacking process of step blasting is simulated based on continuous-discontinuous blasting model.Due to the different effects of blast stress wave and blast gas in the blasting process,the blast stress wave and blast gas are respectively simulated in the form of velocity and pressure in the numerical simulation,and the development and distribution of rock cracks in the blasting process and the throwing and stacking effect of blast heap are analyzed.Through field blasting experiments,it is verified that the simulation results are consistent with the field blasting results.

关 键 词：台阶爆破 颗粒流 爆破抛掷堆积 

分 类 号：TD235[矿业工程—矿井建设]