1、Designation:D5781/D5781M18Standard Guide forUse of Dual-Wall Reverse-Circulation Drilling forGeoenvironmental Exploration and the Installation ofSubsurface Water Quality Monitoring Devices1This standard is issued under the fixed designation D5781/D5781M;the number immediately following the designati
2、on indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This guide covers how dual-wall reverse-c
3、irculationdrilling may be used for geoenvironmental exploration andinstallation of subsurface water quality monitoring devices.The term reverse circulation with respect to dual-wall drillingin this guide indicates that the circulating fluid is forced downthe annular space between the double-wall dri
4、ll pipe andtransports soil/sediment and rock particles to the surfacethrough the inner pipe.NOTE1This guide does not include considerations for geotechnicalsite characterizations that are addressed in a separate guide.1.2 Dual-wall reverse-circulation for geoenvironmental ex-ploration and monitoring
5、-device installations will often in-volve safety planning,administration,and documentation.Thisguide does not purport to specifically address exploration andsite safety.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach syst
6、em may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibi
7、lity of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This guide offers an organized collection of informationor a series of options and does not recommend a specificcourse of
8、action.This document cannot replace education orexperience and should be used in conjunction with professionaljudgment.Not all aspects of this guide may be applicable in allcircumstances.This ASTM standard is not intended to repre-sent or replace the standard of care by which the adequacy ofa given
9、professional service must be judged,nor should thisdocument be applied without consideration of a projects manyunique aspects.The word“Standard”in the title of thisdocument means only that the document has been approvedthrough the ASTM consensus process.1.6 This international standard was developed
10、in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1
11、ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4428/D4428M Test Methods for Crosshole Seismic Test-ingD5088 Practice for
12、Decontamination of Field EquipmentUsed at Waste SitesD5092 Practice for Design and Installation of GroundwaterMonitoring WellsD5434 Guide for Field Logging of Subsurface Explorationsof Soil and RockD5521 Guide for Development of Groundwater MonitoringWells in Granular AquifersD5608 Practices for Dec
13、ontamination of Sampling and NonSample Contacting Equipment Used at Low Level Radio-active Waste Sites3.Terminology3.1 DefinitionsFor definitions of general terms usedwithin this standard,refer to Terminology D653.1This guide is under the jurisdiction ofASTM Committee D18 on Soil and Rockand is the
14、direct responsibility of Subcommittee D18.21 on Groundwater andVadose Zone Investigations.Current edition approved June 1,2018.Published July 2018.Originally approvedin 1995.Last previous edition approved in 2013 as D5781 13.DOI:10.1520/D5781_D5781M-18.2For referenced ASTM standards,visit the ASTM w
15、ebsite,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Dri
16、ve,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 4.Significance and Use4.1 Dual-wall reverse-circulation drilling can be used insupport of geoenvironmental exploration and f
