CAJ | 학술논문

为了保证在矿山巷道开挖过程中，最大限度地减少对围岩的破坏，提高爆破效率，采用全断面光面爆破技术。针对巷道断面面积较大且岩层坚硬等情况，对爆破方案、复合掏槽方式和单螺旋形掏槽方式、爆破参数和炮孔布置等进行了精心的设计。掏槽形式为单螺旋形掏槽方式，平均孔深2 m，炮孔数72个。结果表明，平均循环进尺达到1.7 m，炮孔利用率大于85豫，提高了巷道的掘进速度和成巷质量。现场应用取得了良好的爆破效果，确保了会理县兴隆矿业矿山巷道全断面开挖的成功。
위료보증재광산항도개알과정중，최대한도지감소대위암적파배，제고폭파효솔，채용전단면광면폭파기술。침대항도단면면적교대차암층견경등정황，대폭파방안、복합도조방식화단라선형도조방식、폭파삼수화포공포치등진행료정심적설계。도조형식위단라선형도조방식，평균공심2 m，포공수72개。결과표명，평균순배진척체도1.7 m，포공이용솔대우85예，제고료항도적굴진속도화성항질량。현장응용취득료량호적폭파효과，학보료회리현흥륭광업광산항도전단면개알적성공。
In order to ensure the drift driving process in mine and minimize the damage of surrounding rock and to improve the blasting efficiency,the drift driving with whole section smooth blasting technology was used. In view of the larger drift cross-section area and hard rock,the blasting scheme,mixed cut mode and helix cut mode,blasting parameters and blast-hole layout were elaborately designed. The whole section smooth blasting technology,with the single spiral cut way and average 2 m depth and 72 holes,was designed. The results show that the average cycle driv-ing length reached 1. 7 m,and the utilization ratio of blasting holes was more than 85%,which improved the drifting speed and quality. The application achieved good blasting effect,and ensured whole section excavation blasting suc-cessfully.