贯通式潜孔锤反循环钻进技术在复杂地层中的应用
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2018-11-28 12:12:57
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贯通式潜孔锤反循环钻进技术在复杂地层中的应用2008年第5期探矿工程(岩土钻掘工程)9贯通式潜孔锤反循环钻进技术在复杂地层中的应用殷其雷,博坤,李忠(1.吉林大学,吉林长春130026;2.河北省地勘局第三地质大队,河北张家口075000)摘要:河北涿鹿锰银矿区地质条件复杂,干旱缺水,传统小口径金刚石钻进技术钻进效率低、成本高、施工周期长;此外,设计勘探孔为斜孔,增加了施工难度。采用贯通式潜孔锤全孔反循环钻进技术进行生产性试验,实践表明,该工艺方法能够解决该矿区的钻探难题,获得良好的应用效果。针对试验中出现的问题,提出一些改进意见。关键词:贯通式潜孔锤;反循环钻进;复杂地层;斜孔;CSR钻探方法中图分类号:P634.56文献标识码:B文章编号:1672—7428(2008)05—0009~04ApplicationofHollow-throughDTHHammerDrillingwiⅡ1ReverseCirculationinComplexFormation/YINQi—lei,BOKun,LIZhong(1.JilinUniversity,ChangchunJilin130026,China;2.3rdGeologyTeamunderHebeiProvin—cialBureauofGeo—explorationandMineralDevelopment,Zhan~iakouHebei075000,China)Abstract:ThegeologicalconditionsinmanganeseandsilvermineralinZhuoluofHebeiProvinceiscomplicatedwithdroughtandwatershoaage,traditionalsmalldiameterdiamondheaddrillingisnotsuitablebecauseofitslowdrillingeffi—ciency,highcostandlongconstructionperiod.Inaddition,theexploratoryholeisslant,whichmakestheconstructionmoredifficult.Thehollow—throughDTHhammerdrillingtechniqueswithwholeholereve
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