金属矿山
金屬礦山
금속광산
Metal Mine
2015年
10期
121-124
,共4页
空气潜孔锤%集束式潜孔锤%大直径潜孔锤%反循环钻进%潜孔锤钻进
空氣潛孔錘%集束式潛孔錘%大直徑潛孔錘%反循環鑽進%潛孔錘鑽進
공기잠공추%집속식잠공추%대직경잠공추%반순배찬진%잠공추찬진
DTH%Cluster DTH%Large-diameter DTH%Reverse circulation drilling%DTH drilling
依托某煤矿区大直径钻井工程项目展开了大直径集束式潜孔锤反循环钻进方法的先导性试验. 在试验过程中,采用?710/311 mm扩孔用集束式反循环潜孔锤和?127/70 mm双壁钻具,通过优化风量、风压、转速等反循环钻进工艺参数,取得了良好的反循环效果,最高机械钻速达到了4 m/h,平均机械钻速2. 1 m/h,与同条件下常规牙轮钻头扩孔钻进方法相比提高了2. 6倍以上. 试验结果表明:大直径集束式潜孔锤反循环钻进方法是解决大直径钻孔硬岩钻进难题的一种行之有效、值得深入研究与推广应用的高效钻进方法.
依託某煤礦區大直徑鑽井工程項目展開瞭大直徑集束式潛孔錘反循環鑽進方法的先導性試驗. 在試驗過程中,採用?710/311 mm擴孔用集束式反循環潛孔錘和?127/70 mm雙壁鑽具,通過優化風量、風壓、轉速等反循環鑽進工藝參數,取得瞭良好的反循環效果,最高機械鑽速達到瞭4 m/h,平均機械鑽速2. 1 m/h,與同條件下常規牙輪鑽頭擴孔鑽進方法相比提高瞭2. 6倍以上. 試驗結果錶明:大直徑集束式潛孔錘反循環鑽進方法是解決大直徑鑽孔硬巖鑽進難題的一種行之有效、值得深入研究與推廣應用的高效鑽進方法.
의탁모매광구대직경찬정공정항목전개료대직경집속식잠공추반순배찬진방법적선도성시험. 재시험과정중,채용?710/311 mm확공용집속식반순배잠공추화?127/70 mm쌍벽찬구,통과우화풍량、풍압、전속등반순배찬진공예삼수,취득료량호적반순배효과,최고궤계찬속체도료4 m/h,평균궤계찬속2. 1 m/h,여동조건하상규아륜찬두확공찬진방법상비제고료2. 6배이상. 시험결과표명:대직경집속식잠공추반순배찬진방법시해결대직경찬공경암찬진난제적일충행지유효、치득심입연구여추엄응용적고효찬진방법.
A pilot test for large-diameter cluster DTH reverse circulation drilling technology based on the large diameter drilling project in a coal mine was carried out. During the tests,by adopting the?710/311mm Reverse circulation cluster DTH and ?127/70mm double wall drill-pipe,a good performance of reverse circulation was achieved by optimizing the parameters of reverse circulation such as air volume,air pressure,and rotary speed etc. . The highest ROP was 4m/h,and the average ROP was 2. 1m/h,which were increased more than 2. 6 times as much as that by the conventional cone bit drilling method under the same condition. The pilot test results showed that large diameter cluster DTH reverse circulation drilling technology was an ef-fective drilling technology to solve the problem of hard rock drilling in large diameter hole,and is worthy to be promoted in ap-plication.
