According to specific geological conditions of Jiujialu mine area, deep-hole blasting open-air stage is explored in this paper.
根据九架炉采区具体地质条件，进行露天台阶深孔爆破的实践探索。
2
For fuel oil tank and lubrication oil tank, shipyard plan to sweep blasting and cleaning at block stage. For the burnt damage areas should be grinding and cleaning at quay stage.
燃油舱和滑油舱，分段阶段进行扫砂处理和清洁，后续烧损打磨清洁。
3
The relationship between the pre-splitting, vibration reduction, millisecond blasting and the maximum single detonating charge in open deep-hole large stage is introduced.