关于我国地质岩心钻机发展方向的分析张伟(中国地质调查局,北京100037)摘要:文章对立轴式钻机和全液压动力头钻机进行了全面的对比分析,重点对两种钻机进行了技术经济对比
结果表明,动力头钻机不仅在搬迁和运移性方面要优于立轴式钻机,而且在钻进施工的技术经济指标方面也要优于立轴式钻机
钻孔深度加大后,动力头钻机在钻进施工效率方面的对比优势会逐渐减弱,应该考虑采取加大钻杆立根长度,从而加大起下钻速度的措施
关键词:岩心钻机;技术经济学;对比AnalysisontheDevelopmentTrendofGeologicalCoreDrillinChinaZHANGWei(ChinaGeologicalSurvey,Beijing100037)Abstract:Acomprehensiveanalysisonandcomparisonbetweenspindlecoredrillandhydraulictop-drivecoredrillismadeinthisarticle
Specialconcernisfocusedonthetechnicaleconomicsinthedrillingoperationofthetwotypesofthecoredrills
Theresultshowsthathydraulictop-drivecoredrillissuperioroverspindlecoredrillnotonlyinitslightweightandportability,butalsoinitsexcellentdrillingperformance
Withtheincreaseofboreholedepth,thecomparativeadvantageofhydraulictop-drivecoredrilldecreases
Inthiscase,thele