Mine;
Institute,;
Guizhou;
University,;
Guiyang;
550003,;
China;
School;
of;
Metallurgy;
and;
Mine,;
Kunming;
Metallurgy;
College,;
Kunming;
650033,;
China;
School;
of;
Resources;
and;
Environmental;
Engineering,;
Wuhan;
University;
of;
Technology,;
Wuhan;
430070,;
China;
竖井开挖; 开挖爆破; 垂直炮孔; 实验; 切割技术; 收费问题; 爆破切割; 爆破方法;