CAJ | 학술논문

为解决赵固一矿大采深厚煤层工作面周期来压对安全高效生产的影响，采用爆破技术进行顶板预裂。结果表明，爆破后顶板周期来压次数、步距、强度，来压周期、影响范围等都有显著的降低，爆破孔浅部裂隙增多，煤岩破碎，深部产生明显的贯通裂隙。
위해결조고일광대채심후매층공작면주기래압대안전고효생산적영향，채용폭파기술진행정판예렬。결과표명，폭파후정판주기래압차수、보거、강도，래압주기、영향범위등도유현저적강저，폭파공천부렬극증다，매암파쇄，심부산생명현적관통렬극。
To solve the adverse effects of periodic weighting in deep seam face , roof presplitting blasting technique in Zhaogu coal mine is used and the results show that after blasting ,times ,step ,strength ,period ,scope of influence of period-ic roof can be reduced prominently ,shallow hole fracture increased ,coal and rock crushed and apparent transfixion crack ap-peared in deep drilling .