BS EN ISO 22282-4-2012 Geotechnical investigation and testing Geohydraulic testing Pumping tests《岩土工程勘察和试验 地液压试验 泵送试验》.pdf

《BS EN ISO 22282-4-2012 Geotechnical investigation and testing Geohydraulic testing Pumping tests《岩土工程勘察和试验 地液压试验 泵送试验》.pdf》由会员分享，可在线阅读，更多相关《BS EN ISO 22282-4-2012 Geotechnical investigation and testing Geohydraulic testing Pumping tests《岩土工程勘察和试验 地液压试验 泵送试验》.pdf（34页珍藏版）》请在麦多课文档分享上搜索。

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 22282-4:2012Geotechnical investigation and testing Geohydraulic testingPart 4: Pumping testsThis British Standard is the UK implementation of EN ISO 22282-4:2012.Togeth

2、er with parts 1, 2, 3, 5, and 6 of BS EN ISO 22282, it partiallysupersedes BS 5930:1999+A2:2010, which is currently being revised in order to remove conflicting material. In the meantime, whereconflict arises between these documents, the provisions of BS EN ISO 22282-4:2012 take precedence.The test

3、given in this standard is included in BS 5930:1999+A2:2010(Clauses 27 and 28), and conflicting parts are now withdrawn.The UK participation in its preparation was entrusted by Technical Committee B/526, Geotechnics, to Subcommittee B/526/3,Site investigation and ground testing.A list of organization

4、s represented on this subcommittee can beobtained on request to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application. The British Standards Institution 2012.Published by BSI Standards Limited 2012.ISBN

5、 978 0 580 76153 9ICS 91.010.30; 93.020Compliance with a British Standard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2012.Amendments/corrigenda issued since publicationDate Text affe

6、cted BS EN ISO 22282-4:2012 BRITISH STANDARDNational forewordEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 22282-4 June 2012 ICS 93.020 English Version Geotechnical investigation and testing - Geohydraulic testing - Part 4: Pumping tests (ISO 22282-4:2012) Reconnaissance et essais gotechn

7、iques - Essais gohydrauliques - Partie 4: Essais de pompage (ISO 22282-4:2012) Geotechnische Erkundung und Untersuchung - Geohydraulische Versuche - Teil 4: Pumpversuche (ISO 22282-4:2012) This European Standard was approved by CEN on 31 May 2012. CEN members are bound to comply with the CEN/CENELEC

8、 Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or t

9、o any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the offici

10、al versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slova

11、kia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved wo

12、rldwide for CEN national Members. Ref. No. EN ISO 22282-4:2012: EBS EN ISO 22282-4:2012 EN ISO 22282-4:2012 (E) 3 Foreword This document (EN ISO 22282-4:2012) has been prepared by Technical Committee CEN/TC 341“Geotechnical Investigation and Testing“, the secretariat of which is held by ELOT, in col

13、laboration withTechnical Committee ISO/TC 182 “Geotechnics“. This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, at the latest by December 2012, and conflicting national standards shall be withdrawnat the latest by Dec

14、ember 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards o

15、rganisations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, CzechRepublic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Po

16、rtugal, Romania, Slovakia, Slovenia, Spain,Sweden, Switzerland, Turkey and the United Kingdom. BS EN ISO 22282-4:2012ISO 22282-4:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references . 13 Terms, definitions and symbols 23.1 Terms and definitions . 23.2 Symbo

17、ls . 24 Equipment . 25 Test procedure . 35.1 Test preparation . 35.2 Arranging the disposal of discharge water 35.3 Executing and equipping the well . 45.4 Executing and equipping the piezometers . 65.5 Execution of the test . 65.6 Uncertainty of measurement 95.7 Interruptions in pumping . 95.8 Deco

18、mmissioning . 96 Test results 97 Reports .107.1 Field report 107.2 Test report . 11Annex A (informative) Record of measured values and test results of the pumping test Example . 12Annex B (informative) Determining the pumping test discharge 14Annex C (informative) Interpretation of the pumping test

19、results .18Bibliography .25BS EN ISO 22282-4:2012ISO 22282-4:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical

20、 committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with

21、 the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft Internat

22、ional Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be

23、the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 22282-4 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 341, Geotechnical investigation and testing, in collaboration with Technical Committee

24、 ISO/TC 182, Geotechnics, Subcommittee SC 1, Geotechnical investigation and testing, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).ISO 22282 consists of the following parts, under the general title Geotechnical investigation and testing Geohydraulic

25、 testing: Part 1: General rules Part 2: Water permeability tests in a borehole using open systems Part 3: Water pressure tests in rock Part 4: Pumping tests Part 5: Infiltrometer tests Part 6: Water permeability tests in a borehole using closed systemsiv ISO 2012 All rights reservedBS EN ISO 22282-4

26、:2012ISO 22282-4:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in

27、a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commissi

28、on (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical com

29、mittees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not

30、be held responsible for identifying any or all such patent rights.ISO 22282-4 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 341, Geotechnical investigation and testing, in collaboration with Technical Committee ISO/TC 182, Geotechnics, Subcommittee SC 1,

31、 Geotechnical investigation and testing, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).ISO 22282 consists of the following parts, under the general title Geotechnical investigation and testing Geohydraulic testing: Part 1: General rules Part 2: Wate

32、r permeability tests in a borehole using open systems Part 3: Water pressure tests in rock Part 4: Pumping tests Part 5: Infiltrometer tests Part 6: Water permeability tests in a borehole using closed systemsiv ISO 2012 All rights reservedBS EN ISO 22282-4:2012INTERNATIONAL STANDARD ISO 22282-4:2012

33、(E)Geotechnical investigation and testing Geohydraulic testing Part 4: Pumping tests1 ScopeThis part of ISO 22282 establishes requirements for pumping tests as part of geotechnical investigation service in accordance with EN 1997-1 and EN 1997-2.A pumping test consists in principle of: drawing down

34、the piezometric surface of the groundwater by pumping from a well (the test well); measuring the pumped discharge and the water level in the test well and piezometers, before, during and after pumping, as a function of time.This part of ISO 22282 applies to pumping tests performed on aquifers whose

35、permeability is such that pumping from a well can create a lowering of the piezometric head within hours or days depending on the ground conditions and the purpose. It covers pumping tests carried out in soils and rock.The tests concerned by this part of ISO 22282 are those intended for evaluating t

36、he hydrodynamic parameters of an aquifer and well parameters, such as: permeability of the aquifer, radius of influence of pumping, pumping rate of a well, response of drawdown in an aquifer during pumping, skin effect, well storage, response of recovery in an aquifer after pumping.2 Normative refer

37、encesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appliesISO 14688-1, Geotechnical investigation and te

38、sting Identification and classification of soil Part 1: Identification and descriptionISO 14689-1, Geotechnical investigation and testing Identification and classification of rock Part 1: Identification and descriptionISO 22282-1, Geotechnical investigation and testing Geohydraulic testing General r

39、ulesISO 22475-1, Geotechnical investigation and testing Sampling methods and groundwater measurements Part 1: Technical principles for execution ISO 2012 All rights reserved 1BS EN ISO 22282-4:2012ISO 22282-4:2012(E)3 Terms, definitions and symbols3.1 Terms and definitionsFor the purposes of this do

40、cument, the terms and definitions given in ISO 22282-1 and the following apply.3.1.1radius of influence of pumpingR(t)distance, measured from the axis of the well, beyond which the lowering of the piezometric surface of the groundwater is nilNOTE In a steady-state condition, R(t) is constant, and is

41、 thus designated by Ra.3.2 SymbolsSymbol Designation UnitD drilled diameter of the well md thickness of the aquifer mL wetted length of screen of the perforated pipe placed in the well mQ flow rate m3/sQddischarge rate, assessed pumping discharge at the end of the well preparation m3/sQedischarge of

42、 the pumping test m3/sRaradius of influence under steady-state conditions mR(t) radius of influence at time (t) mS storage factor T transmissivity m2/st time sv velocity a slope of the line that characterizes the drawdown in the well b ordinate at the origin of the line that characterizes the drawdo

43、wn in the well c conventional drawdown unit of the preliminary pump discharge dNsize which may be interpolated from the grading curve, of the square sieve mesh of side d for which the weight percent of undersize is equal to N percente distance between the bottom of the well and the surface of the un

44、confined groundwater at rest in an aquifermkhhorizontal permeability coefficient m/sDh drawdown of the water level in the well mDhnull drawdown of the water level in the well after 2 h mDhfdrawdown of the water level in the well, set during the preliminary test and not to be exceededmDhmaxmaximum dr

45、awdown of the water level in the well during the pumping test m4 EquipmentConducting a pumping test requires the following equipment and instruments:a) a test well and piezometers (see ISO 22475-1);2 ISO 2012 All rights reservedBS EN ISO 22282-4:2012ISO 22282-4:2012(E)3 Terms, definitions and symbol

46、s3.1 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 22282-1 and the following apply.3.1.1radius of influence of pumpingR(t)distance, measured from the axis of the well, beyond which the lowering of the piezometric surface of the groundwater is nilNOTE

47、In a steady-state condition, R(t) is constant, and is thus designated by Ra.3.2 SymbolsSymbol Designation UnitD drilled diameter of the well md thickness of the aquifer mL wetted length of screen of the perforated pipe placed in the well mQ flow rate m3/sQddischarge rate, assessed pumping discharge

48、at the end of the well preparation m3/sQedischarge of the pumping test m3/sRaradius of influence under steady-state conditions mR(t) radius of influence at time (t) mS storage factor T transmissivity m2/st time sv velocity a slope of the line that characterizes the drawdown in the well b ordinate at

49、 the origin of the line that characterizes the drawdown in the well c conventional drawdown unit of the preliminary pump discharge dNsize which may be interpolated from the grading curve, of the square sieve mesh of side d for which the weight percent of undersize is equal to N percente distance between the bottom of the well and the surface of the unconfined groundwater at rest in an aquifermkhhorizontal permeability coefficient m/sDh drawdown of the water level in the well mDhnull drawd