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姑山采场地质条件复杂 ,对采场深孔爆破遗留的根底、档墙 ,以及姑山采场扩圈推进过程中出现的三角矿 (岩 )柱 ,采用大孔径 4 5°浅眼进行爆破处理 ,根据多年实践 ,总结出一套比较有效的爆破控制参数。
The geological conditions in Gushan stope are complex and the basement, arch wall and the triangular ore (rock) column appearing during the expanding circle of ghost stope are removed by blasting with a large aperture of 45 ° According to many years of practice, a set of more effective blasting control parameters is concluded.