longhole blasting meaning in Chinese

深眼爆破

Shaft sinking by longhole blasting in complicated rock mass
复杂岩体内的深孔爆破成井
Study on large - diameter longhole blasting of underground mining
地下采矿大直径深孔爆破研究
Longwall and longhole blasting coal mining method for difficult mining seam
难采煤层巷道长壁长孔爆破采煤方法简介
Construction technology for completion of coal chute in a single stage by longhole blasting
溜煤眼深孔爆破一次成井施工技术
Exploration and application of stope leaching uranium after longhole blasting in ganzhou uranium mine
深孔爆破原地破碎浸出采铀在赣州铀矿的应用及探讨