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金属矿山 ›› 2012, Vol. 41 ›› Issue (07): 31-34.

• 采矿工程 • 上一篇    下一篇

渐进式大直径空孔螺旋掏槽成腔过程数值模拟

柯波1,2,李萍1,2,冯超东1,2,钟华明3   

  1. 1.西南科技大学环境与资源学院;2.固体废物处理与资源化教育部重点实验室;3.四川煤矿安全监察局
  • 出版日期:2012-07-15 发布日期:2012-07-26
  • 基金资助:

    * 西南科技大学青年基金项目(编号:12zx3119)。

Numerical Simulation on Cavity Formation Process by Progressive Large Diameter Empty Hole Spiral Cut Blasting

Ke Bo1,2,Li Ping1,2,Feng Chaodong1,2,Zhong Huaming3   

  1. 1.School of Environment and Resource,Southwest University of Science and Technology;2.key Laboratory of Solid Waste  Treatment and Resource Recycle,Ministry of Education;3.Sichuan Coal Mine Safety Supervision Bureau
  • Online:2012-07-15 Published:2012-07-26

摘要: 借助ANSYS/LS-DYNA三维非线性动力有限元软件,对渐进式大直径空孔螺旋掏槽爆破成腔过程进行了数值模拟研究,得到了炸药爆炸体积扩展过程中腔体形态变化的直观图形。结果表明:爆破应力波以柱面波的形式传递,而且空孔能较好地起到自由面的作用,同时还验证了渐进式大直径空孔螺旋掏槽成腔理论的合理性。整个数值模拟研究实现了掏槽爆破成腔成型过程的可视化,对预测掏槽爆破效果和优化爆破技术参数具有积极意义。

关键词: 井巷掘进, 渐进式螺旋掏槽, 数值模拟

Abstract: The process of cavity formation by progressive large diameter empty hole spiral cut blasting is simulated by ANSYS/LS-DYNA.The intuitional graphics of the change of cavity in the explosive volume expansion process was obtained.Numerical results show that the blasting wave delivers in the form of cylinder wave, and the empty hole plays as a free surface.Meanwhile, the theory rationality of cavity formation by progressive large diameter empty hole spiral cut blasting is verified.The cavity formation process by cut blasting can be visualized in the numerical simulation study.It is expected that the result of the study can forecast the cut blasting result and optimize the design of blasting technical parameters as positive.

Key words: Excavation, Progressive spiral cut blasting, Numerical simulation