Abstract:

Abstract: The author does an experiment of single hole blasting crater test at the same level with the well drilling test and the similar rock properties site based on the blasting crater theory. The experiment obtains the best buried depth ratio of this kind of rock properties according to results of single hole blasting crater test and actual situation of mine. The author successfully obtains a well-forming up to 32 m in depth through arranging round holes, layering in unequal height, setting the middle layer, up and down multiple sequential explosions and reasonable time delay blasting in different layer.

摘要：

摘　要：以爆破漏斗理论为依据，在与成井试验同一台阶面、岩性相近的场地做了单孔爆破漏斗试验，得出此种岩性的场地最佳埋深比，基于单孔爆破漏斗试验得出的结论和矿山实际情况，通过圆形布孔、不等高分层、设置中间层、多层上下依序起爆和分层间合理延时爆破等技术，成功地将爆破一次成井深度突破到32 m。