摘要
云南省某锡矿由于爆破参数不合理,导致炸药单耗过高,并且大块较多,在一定程度上对矿山的经济效益造成影响。为通过优化爆破参数改变此现状,基于利文斯顿爆破漏斗原理,在该矿1660中段某采场按照不耦合装药的形式,进行单孔爆破漏斗试验、变孔距爆破漏斗试验、斜面台阶爆破漏斗试验。得到该种锡矿的最佳炸药单耗、爆破漏斗最大体积、最佳爆破漏斗半径、最小抵抗线和最佳孔间距。基于爆破漏斗理论对采场爆破参数进行优化,最终得出采场的合理爆破参数、孔间距和排距。按照此参数在该矿山进行应用,取得了良好的效果。
A tin mine in Yunnan province has a high explosive unit consumption and a high number of large blocks due to unreasonable blasting parameters,which to a certain extent affects the economic efficiency of the mine.In order to change this status quo by optimizing blasting parameters,a single-hole blasting funnel test,a variable-hole-spacing blasting funnel test and a sloping step blasting funnel test were carried out in a quarry in the middle section of 1660 in this mine according to the form of uncoupled charging,based on the Livingston blasting funnel principle.The optimum explosive unit consumption,maximum blast funnel volume,optimum blast funnel radius,minimum resistance line and optimum hole spacing were obtained for this type of tin ore.The blasting parameters of the quarry were optimised based on the blast funnel theory to give reasonable blasting parameters,hole spacing and row spacing for the quarry.The parameters were applied in this mine,and good results were achieved.
作者
马俊杰
黄永辉
张智宇
李洪超
MA Junjie;HUANG Yonghui;ZHANG Zhiyu;LI Hongchao(School of Land and Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Key Laboratory of Sino-German Blue Mine and Special Underground Space Development and Utilization,Yunnan Province,Kunming 650093,China;School of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,China;School of Urbanism,Kunming University of Science and Technology,Kunming 650051,China)
出处
《有色金属工程》
CAS
北大核心
2021年第12期93-99,共7页
Nonferrous Metals Engineering
基金
国家自然科学基金资助项目(52064025,52164009,52164010)。
关键词
爆破漏斗试验
空气不耦合装药
最佳埋深
柱状药包
参数优化
blast funnel test
air uncoupled charge
optimum burial depth
column pack
parameter optimisation
