EN ISO 22282-4:2012

SLOVENSKI STANDARD
01-december-2012
*HRWHKQLþQRSUHLVNRYDQMHLQSUHVNXãDQMH+LGURJHRORãNHSUHLVNDYHGHO
ýUSDOQLSUHVNXV,62
Geotechnical investigation and testing - Geohydraulic testing - Part 4: Pumping tests
(ISO 22282-4:2012)
Geotechnische Erkundung und Untersuchung - Geohydraulische Versuche - Teil 4:
Pumpversuche (ISO 22282-4:2012)
Reconnaissance et essais géotechniques - Essais géohydrauliques - Partie 4: Essais de
pompage (ISO 22282-4:2012)
Ta slovenski standard je istoveten z: EN ISO 22282-4:2012
ICS:
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 22282-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2012
ICS 93.020
English Version
Geotechnical investigation and testing - Geohydraulic testing -
Part 4: Pumping tests (ISO 22282-4:2012)
Reconnaissance et essais géotechniques - Essais Geotechnische Erkundung und Untersuchung -
géohydrauliques - Partie 4: Essais de pompage (ISO Geohydraulische Versuche - Teil 4: Pumpversuche (ISO
22282-4:2012) 22282-4:2012)
This European Standard was approved by CEN on 31 May 2012.

CEN members are bound to comply with the CEN/CENELEC 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 to 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 official 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22282-4:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .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 collaboration with
Technical Committee ISO/TC 182 "Geotechnics".
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by December 2012, and conflicting national standards shall be withdrawn
at the latest by December 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. 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 organisations of the following
countries are bound to implement this European Standard: 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, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.

INTERNATIONAL ISO
STANDARD 22282-4
First edition
2012-06-01
Geotechnical investigation and testing —
Geohydraulic testing —
Part 4:
Pumping tests
Reconnaissance et essais géotechniques — Essais géohydrauliques —
Partie 4: Essais de pompage
Reference number
ISO 22282-4:2012(E)
©
ISO 2012
ISO 22282-4:2012(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

ISO 22282-4:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols . 2
3.1 Terms and definitions . 2
3.2 Symbols . 2
4 Equipment . 2
5 Test procedure . 3
5.1 Test preparation . 3
5.2 Arranging the disposal of discharge water . 3
5.3 Executing and equipping the well . 4
5.4 Executing and equipping the piezometers . 6
5.5 Execution of the test . 6
5.6 Uncertainty of measurement . 9
5.7 Interruptions in pumping . 9
5.8 Decommissioning . 9
6 Test results . 9
7 Reports .10
7.1 Field report .10
7.2 Test report . 11
Annex A (informative) Record of measured values and test results of the pumping test — Example .12
Annex B (informative) Determining the pumping test discharge .14
Annex C (informative) Interpretation of the pumping test results .18
Bibliography .25
ISO 22282-4:2012(E)
Foreword
ISO (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 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 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 International 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 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 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 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 systems
iv © ISO 2012 – All rights reserved

INTERNATIONAL STANDARD ISO 22282-4:2012(E)
Geotechnical investigation and testing — Geohydraulic testing —
Part 4:
Pumping tests
1 Scope
This 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 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 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 the 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 references
The 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) applies
ISO 14688-1, Geotechnical investigation and testing — Identification and classification of soil — Part 1:
Identification and description
ISO 14689-1, Geotechnical investigation and testing — Identification and classification of rock — Part 1:
Identification and description
ISO 22282-1, Geotechnical investigation and testing — Geohydraulic testing — General rules
ISO 22475-1, Geotechnical investigation and testing — Sampling methods and groundwater measurements —
Part 1: Technical principles for execution
ISO 22282-4:2012(E)
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 22282-1 and the following apply.
3.1.1
radius of influence of pumping
R(t)
distance, measured from the axis of the well, beyond which the lowering of the piezometric surface of the
groundwater is nil
NOTE In a steady-state condition, R(t) is constant, and is thus designated by R .
a
3.2 Symbols
Symbol Designation Unit
D drilled diameter of the well m
d thickness of the aquifer m
L
wetted length of screen of the perforated pipe placed in the well m
Q flow rate m /s
Q discharge rate, assessed pumping discharge at the end of the well preparation m /s
d
Q discharge of the pumping test m /s
e
R radius of influence under steady-state conditions m
a
R(t) radius of influence at time (t) m
S storage factor —
T transmis
...