CAJ | 학술논문

在乌兰矿利用常规回转钻进工艺施工穿层孔过程中,钻遇硬岩及软硬夹层时,遇到了钻进效率低下问题以及钻孔跑偏现象.将液动潜孔锤应用于煤矿井下穿层孔钻进施工中,使用潜孔锤与球齿钻头的钻具组合,效率较常规回转钻进工艺提高不明显,之后尝试使用了潜孔锤与胎体式冲击型复合片钻头钻具组合,效率较常规回转钻进工艺提高240%,钻孔偏斜也大幅降低.对液动潜孔锤钻进工艺参数进行了分析和计算,并给出了合理的参数匹配建议.
재오란광이용상규회전찬진공예시공천층공과정중,찬우경암급연경협층시,우도료찬진효솔저하문제이급찬공포편현상.장액동잠공추응용우매광정하천층공찬진시공중,사용잠공추여구치찬두적찬구조합,효솔교상규회전찬진공예제고불명현,지후상시사용료잠공추여태체식충격형복합편찬두찬구조합,효솔교상규회전찬진공예제고240%,찬공편사야대폭강저.대액동잠공추찬진공예삼수진행료분석화계산,병급출료합리적삼수필배건의.
Drilling efficiency is low and borehole deviation happens when encountering hard rock and hard and soft sandwich during drilling through layers hole by conventional rotary drilling technique in Ulan mine.The hydraulic DTH hammer and ball tooth bit BHA is combined in construction,the efficiency does not rise obviously compared to rotary drilling.The hydraulic DTH hammer and impact type matrix PDC bit BHA is grouped afterwards,the efficiency rises by 240%,and borehole deviation slumps.The drilling parameters are analyzed and calculated to offer suggestions of reasonable parameters matching.