Numerical analysis of spiral notch - holes loosen blasting 螺旋切槽孔松动爆破数值分析
2.
Parameters of spiral v - notch loosen blasting 螺旋切槽孔松动爆破参数
3.
Effectiveness of outburst - prevention measures of combining gas pre - drainage by highly - located roadway in roof with deep - hole loosening blasting 顶板高位巷预抽与深孔松动爆破相结合防突出措施效果
4.
Xinji no . 3 coal mine is a steep mine . it has reached pre - results by isolating the pillar with loosen blast technology in recovery area . the recovery rate is lifted and coal loss is reduced . it is an example for the same mine 新集三矿属急倾斜矿井，在回收区段隔离煤柱中应用松动爆破技术，达到了预期效果，提高了采区回采率，减少了煤炭损失，并为同类型矿井提供了经验。
