1、Designation:D6029/D6029M20Standard Practice for(Analytical Procedures)Determining Hydraulic Properties ofa Confined Aquifer and a Leaky Confining Bed withNegligible Storage by the Hantush-Jacob Method1This standard is issued under the fixed designation D6029/D6029M;the number immediately following t
2、he designation 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 practice covers an analy
3、tical procedure for deter-mining the transmissivity and storage coefficient of a confinedaquifer and the leakance value of an overlying or underlyingconfining bed for the case where there is negligible change ofwater in storage in a confining bed.This practice is used toanalyze water-level or head d
4、ata collected from one or moreobservation wells or piezometers during the pumping of waterfrom a control well at a constant rate.With appropriate changesin sign,this practice also can be used to analyze the effects ofinjecting water into a control well at a constant rate.1.2 This analytical procedur
5、e is used in conjunction withTest Method D4050.1.3 LimitationsThe valid use of the Hantush-Jacobmethod is limited to the determination of hydraulic propertiesfor aquifers in hydrogeologic settings with reasonable corre-spondence to the assumptions of the Theis nonequilibriummethod(Practice D4106)wit
6、h the exception that in this casethe aquifer is overlain,or underlain,everywhere by a confiningbed having a uniform hydraulic conductivity and thickness,and in which the gain or loss of water in storage is assumed tobe negligible,and that bed,in turn,is bounded on the distalside by a zone in which t
7、he head remains constant.Thehydraulic conductivity of the other bed confining the aquifer isso small that it is assumed to be impermeable(see Fig.1).1.4 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard.Thevalues stated in each system may not be
8、exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems may result in noncon-formance with the standard.Reporting of results in units otherthan SI shall not be regarded as nonconformance with thisstandard.1.5 All observed and calculated
9、values shall conform to theguidelines for significant digits and round established inPractice D6026,unless superseded by this standard.1.5.1 The procedures used to specify how data are collected/recorded or calculated,in this standard are regarded as theindustry standard.In addition,they are represe
10、ntative of thesignificant digits that generally should be retained.The proce-dures used do not consider material variation,purpose forobtaining the data,special purpose studies,or any consider-ations for the users objectives;and it is common practice toincrease or reduce significant digits of report
11、ed date to becommensurate with these considerations.It is beyond the scopeof this standard to consider significant digits used in analysismethod for engineering design.1.6 This practice offers a set of instructions for performingone or more specific operations.This document cannot replaceeducation o
12、r experience and should be used in conjunction withprofessional judgment.Not all aspects of the practice may beapplicable in all circumstances.This ASTM standard is notintended to represent or replace the standard of care by whichthe adequacy of a given professional service must be judged,nor should
13、 this document be applied without the considerationof a projects many unique aspects.The word“Standard”in thetitle of this document means only that the document has beenapproved through the ASTM consensus process.1.7 This standard does not purport to address all of thesafety concerns,if any,associat
14、ed with its use.It is theresponsibility 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.1.8 This international standard was developed in accor-dance with internationally recognize
15、d principles on standard-ization established in the Decision on Principles for the1This practice is under the jurisdiction of ASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.21 on Groundwater andVadose Zone Investigations.Current edition approved June 1,2020.P
16、ublished June 2020.Originallyapproved in 1996.Last previous edition approved in 2017 as D602917.DOI:10.1520/D6029_D6029M-20.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,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 Standar
