爆破2025，Vol.42Issue(3)：63-77,15.DOI:10.3963/j.issn.1001-487X.2025.03.008
约束条件下乳化炸药殉爆距离研究
Study on Transmission Distance of Emulsion Explosives under Constrained Conditions
摘要
Abstract
In mine excavation blasting engineering,smooth blasting typically uses detonating cords to transmit the explosion.This process has low construction efficiency,consumes a significant amount of blasting equipment,and in-creases the mine's production costs.To solve this problem,the sympathetic characteristics of explosives can be uti-lized to initiate detonation within holes.A research method that combines experiments on emulsion explosives' sym-pathetic detonation under various confinement materials with numerical simulations of the sympathetic detonation process in rocks is adopted.By analyzing the impact of confinement conditions,decoupling coefficients,and other fac-tors on the sympathetic detonation distance of explosives,the stable sympathetic detonation distances of emulsion ex-plosives with varying diameters and lengths in boreholes are identified.The conclusions are as follows:confinement conditions significantly influence the sympathetic detonation distance of explosives,with improved confinement resul-ting in a greater sympathetic detonation range.Under a specific radial uncoupling coefficient,the diameter of the ex-plosive exerts a minor influence on the sympathetic detonation distance,which increases as the charge diameter enlar-ges.Additionally,the sympathetic detonation distance diminishes with an increase in the radial uncoupling coefficient and extends with the length of the explosive charge.Industrial trials were conducted to verify the findings,with the explosive spacing set at 70 cm.The results indicate that,in comparison to the conventional construction method utili-zing detonating cord,the cost of blasting materials for smooth blasting in roof holes was diminished by 33.1 yuan per meter,representing a reduction of 36.1％.关键词
矿山掘进/光面爆破/乳化炸药/约束条件/殉爆距离Key words
mine excavation/smooth blasting/emulsion explosive/constraint condition/explosion distance分类
矿业与冶金引用本文复制引用
田丰,史秀志,李波,王文洋,王衍海..约束条件下乳化炸药殉爆距离研究[J].爆破,2025,42(3):63-77,15.基金项目
国家自然科学基金面上项目(No.52374152)爆破荷载下含分层结构面充填体损伤演化与分部揭露渐变失稳机制 the General Program of the National Natural Science Foundation of China(No.52374152) （No.52374152）
