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时间:2020-03-25
《水平定向钻进铺管技术在盐碱地改良中的应用.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第43卷第10期探矿工程(岩土钻掘工程)Vo1.43No.102016年10月ExplorationEngineering(Rock&SoilDrillingandTunneling)Oct.2016:139—144水平定向钻进铺管技术在盐碱地改良中的应用何计彬,潘德元,李炳平一,叶成明1,2,范孔岳(1.国土资源部地质环境监测技术重点实验室,河北保定071051;2.中国地质调查局水文地质环境地质调查中心,河北保定071051;3.中国地质大学(北京),北京100083)摘要:土壤盐碱化作为一种渐进性环境地质灾害,已严重制约着人类生活与社会经济的发展,对盐碱
2、地实施改良和微咸水开发利用已成为世界关注的热点。以往的盐碱地改良多用明渠、暗管排水、暗管结合大口径竖井抽排、种植耐碱性植物等方法,明渠及埋设暗管对地表的开挖破坏性极大、且排水量及适用深度有限、植物改良存在周期长、费时费力等诸多缺点。水平定向钻进铺管技术可将滤水管以水平或近似水平安装在含水层中(水平井),可垂直于含水层流向长距离铺设,与传统改良方式相比能获得较大的出水量、成本低、且施工对环境影响小等诸多优势,工程实例证明,该施工工艺技术为盐碱地改良、地下咸水开发利用、浅层低渗透性地下水资源开采等提供了较理想的工艺方法。关键词:水平定向钻进;滤水管;盐碱地改良;土
3、壤污染修复中图分类号:P634.7文献标识码:A文章编号:1672—7428(2016)10—0139—06ApplicationofHDDPipelayingTechniqueinSalineSoilImprovement/HEJi—bin’。PANDe—yllATtl't’.LIBing—ping’,YECheng—ming’,FANKong—yue(1.KeyLaboratoryforGeologicalEnvironmentalMonitoringTechnologyoftheMinistryofLandandResources,BaodingHebe
4、i071051,China;2.CenterforHydrogeologyandEnvironmentalGeology,ChinaGeologicalSurvey,BaodingHebei07105l,China;3.ChinaUniversityofGeoseiences5、fsocialeconomy.theimprovementofsalinealkalisoilandthedevelopment&utilizationofbrackishwaterhavebe—comethehotspotintheworld.Openchannel,subsurfacedrainageandsubsurfacedrainagecombinedwithlargediameterverticalshaftandalkaliresistantplantwereusedforsalinealkalisoilimprovement,butopench6、annelandburiedunder—groundpipehavegreatdamagetogroundsurfacewithdisadvantagesoflimitedwaterdisplacementandapplicabledepth,longplantimprovementcycleandbeingtime—consuming.Byhorizontaldirectionaldrilling(HDD),screenpipecanbehor—izontallyornearlyhorizontallyinstalledintheaquiferandbela7、idperpendiculartotheaquiferflowinalongdistance.Com—paredwiththeconventionaltubewelldrilling,thereareadvantagesoflargerwateryield,lowcostandsmallimpactontheenvironment.Theengineeringexampleprovesthatthisconstructiontechnologyisidealforsalinealkalisoilimprovement,development&utilizati8、onofsalinegroundwat
5、fsocialeconomy.theimprovementofsalinealkalisoilandthedevelopment&utilizationofbrackishwaterhavebe—comethehotspotintheworld.Openchannel,subsurfacedrainageandsubsurfacedrainagecombinedwithlargediameterverticalshaftandalkaliresistantplantwereusedforsalinealkalisoilimprovement,butopench
6、annelandburiedunder—groundpipehavegreatdamagetogroundsurfacewithdisadvantagesoflimitedwaterdisplacementandapplicabledepth,longplantimprovementcycleandbeingtime—consuming.Byhorizontaldirectionaldrilling(HDD),screenpipecanbehor—izontallyornearlyhorizontallyinstalledintheaquiferandbela
7、idperpendiculartotheaquiferflowinalongdistance.Com—paredwiththeconventionaltubewelldrilling,thereareadvantagesoflargerwateryield,lowcostandsmallimpactontheenvironment.Theengineeringexampleprovesthatthisconstructiontechnologyisidealforsalinealkalisoilimprovement,development&utilizati
8、onofsalinegroundwat
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