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光面爆破就是通过选用合理的爆破参数(炮孔间距、装药量、装药结构、起爆顺序……等),采用周边孔同时起爆的方法,使炸药爆破后,不压碎周边孔壁的岩石,而只在岩体内部产生定向的贯穿裂缝,从而取得光滑的开挖面。采用光面爆破能控制岩面光滑平整,防止岩石开裂,减少超欠挖和支护工程量,增加岩壁的稳定性,减少爆破对保留岩体的破坏作用,进而达到控制岩体开挖轮廓的一种技术。
Smooth blasting is through the use of reasonable blasting parameters (blasthole spacing, charge, charge structure, initiation sequence ... ...), the use of peripheral holes at the same time detonation method, the explosive after blasting, not crushing the perimeter wall Rock, but only in the rock body to produce directional through cracks, so as to obtain a smooth excavation surface. The use of smooth blasting can control the rock formation smooth and smooth, prevent rock cracking, reduce the amount of over-under-excavation and support engineering, increase the stability of the rock wall and reduce the destruction of the retained rock mass by blasting, so as to control the excavation profile of the rock mass A kind of technology.