顶驱车载钻机空气潜孔锤钻进用低压防喷装置的研制.pdf

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1、第42卷第7期探矿工程(岩土钻掘工程)Vo1．42No．72015年7月ExplorationEngineering(Rock＆SoilDrillingandTunneling)Ju1．2015：38—41顶驱车载钻机空气潜孔锤钻进用低压防喷装置的研制赵江鹏，王四一，张晶，刘祺(中煤科工集团西安研究院有限公司，陕西西安710077)摘要：在空气潜孔锤钻进时，孔口安装防喷装置可将高速返出的粉尘或泥浆导离孔口，防止喷向工作台而污染孔口工作环境。综合考虑ZMK5530TZJ60型车载钻机孔口工作台结构特点、配套的斜坡

2、钻杆外形特征、钻进工艺特点以及装卸操作环境等因素，设计了一款适用于顶驱车载钻机的空气潜孔锤钻进用低压防喷装置。该低压防喷装置具有结构简单、安装方便；通过胶芯与钻具之间的过盈实现孔口密封，密封胶芯补偿量大，可密封外径变化较大的斜坡钻杆；可在加接钻杆时更换密封胶芯；设置了2个导流口，上返流体在此压降变化小，有利于排渣的通畅等优点。现场试验表明，该低压防喷装置能够有效密封粉尘泄漏、明显改善孑L口施工环境，达到了设计的目的。关键词：车载钻机；空气潜孔锤钻进；密封胶芯；低压防喷装置中图分类号：P634．3；TE921．4

3、文献标识码：A文章编号：1672—7428(2015)07—0038—04DevelopmentofLowPressureBlowoutPreventerforAirDTHHammerDrillingUsedonTopDriveTruckDriller／ZHAOJiang-peng，WANGSi—yi，ZHANGJing，Q(Xi’anResearchInstituteofChinaCoalTechnology＆EngineeringGroupCorp．，Xi’anShaanxi710077，China)Abs

4、tract：Inordertopreventworkingenvironmentpollution，ablowoutpreventerisnecessarytocarryhigh—speedupwarddownholedustorslurryawayfromtheholetopduringDTHhammerdrilling．Comprehensivelyconsideringthemainfactorsofthestructurecharacteristicsofholetopworkbenchfortruck

5、driller，theshapefeaturesofmatcheddrillpipewithtaperatthejoint，thedrillingprocesscharacteristicsandthemount—dismountoperatingconditions，alowpressureblowoutpreventerf0rairDTHhammerdrillingusedontopdrivetruckdrillerwasdesignedwiththeadvantagesofsimplestructurea

6、ndcon—venientinstallation．Theboreholeentrancesealingwasconductedbyinterferencefitbetweenrubbersealingpluganddrill—ingpipes，thesuficientcompensationquantityofrubbersealingplugiseffectiveforsealingofthosepipeswithlargeoutsidediameterdifference；therubbersealing

7、plugcanbeeasilyreplacedwhileaddingdrillingpipes；2diversionportsweresetuptoreducereturnedfluidpressuredrop．Itisshowedbythefieldapplicationthattheblowoutpreventercaneffectivelypreventthedustorslurryleakageandobviouslyimprovetheconstructionenvironment．Keywords：

8、truckdriller；airDTHhammerdrilling；rubbersealingplug；lowpressureblowoutpreventer0引言屑、粉尘(钻遇地层水时，固液两相混合成糊状物)顶驱车载钻机的主机、操控系统、动力泵站和冷经钻杆柱与孑L壁问的环状间隙高速上返至孔口，如却系统集成于车载底盘上，具有事故响应速度快、施果任其自由喷出，则会严重污染钻场环境，对现场