论文部分内容阅读
基于爆炸能量聚合效应,提出了深孔轴向爆破方法,建立了孔径与炮孔间距及孔深与拉槽面积之间的关系方程,确定了装药结构、起爆方式及起爆顺序,发展了钻孔爆破理论和技术。河南栾川三道庄钼矿采用轴向爆破拉槽、大区深孔崩落法对下部空区进行处理,爆破后厚达30 m的空区顶板破碎块度均匀,爆区塌陷面积2300 m2,最大塌陷深度8m,空区被破碎顶板密实充填,取得了安全高效开采高危矿柱的良好效果。
Based on the effect of explosive energy polymerization, a deep-hole axial blasting method was proposed, and the relation equation between hole diameter and hole spacing, hole depth and groove area was established, and the charge structure, initiation method and initiation sequence were determined, Hole blast theory and technology. Henan Luanchuan Sandaizhuang molybdenum ore using axial blasting trough, large area deep hole caving method to deal with the lower space, after the blasting up to 30 m of space roof crushing block uniformity, the collapse area of 2300 m2, The maximum collapse depth is 8m. The empty area is densely packed with broken roof, and the good effect of safe and efficient mining of high-risk ore pillar has been achieved.