CAJ | 학술논문

景福煤矿副立井穿过多层极破碎岩层，岩体自身稳定性较差，爆破时极易引起片帮冒落，对人身安全和设备构成危害。通过采取预裂爆破；设置缓冲孔；降低循环进尺，减小震源能量；选用低密度、低爆速炸药；采用合理的装药结构等爆破降震技术措施，取得了良好的爆破效果，减小了爆破对围岩的破坏，维护了围岩稳定，实现了极破碎岩层段安全快速施工。
경복매광부립정천과다층겁파쇄암층，암체자신은정성교차，폭파시겁역인기편방모락，대인신안전화설비구성위해。통과채취예렬폭파；설치완충공；강저순배진척，감소진원능량；선용저밀도、저폭속작약；채용합리적장약결구등폭파강진기술조시，취득료량호적폭파효과，감소료폭파대위암적파배，유호료위암은정，실현료겁파쇄암층단안전쾌속시공。
A mine auxiliary shaft in Jingfu Mine had passed through several ultra broken rock strata. A stability of the rock was quite poor ,would cause the sidewall spalling and the roof falling and would cause dangers to the personnel safety and equipment. With a pre-cracking blasting ,buffering borehole , circulating rate reduced ,seismic energy value reduced ,low density and low detonation velocity explo‐sives selected ,rational explosive charge structure and other blasting vibration prevention technology measures applied ,a good blasting effect was obtained ,the surrounding failure by the blasting was re‐duced ,the surrounding rock stability was maintained and a safety and rapid construction in the ultra broken rock section was realized.