1、BS EN ISO 22476-15:2016Geotechnical investigation andtesting Field testingPart 15: Measuring while drilling(ISO 22476-15:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 22476-15:2016 BRITISH STANDARDNational forewordThis British Standard is the UK impl
2、ementation of EN ISO22476-15:2016. The UK participation in its preparation was entrusted to TechnicalCommittee B/526/3, Site investigation and ground testing.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include
3、all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 84812 4ICS 93.020Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Stan
4、dard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 22476-15 August 2016 ICS 93.020 English Version Geotechnical in
5、vestigation and testing - Field testing - Part 15: Measuring while drilling (ISO 22476-15:2016) Reconnaissance et essais - Essais de sol - Partie 15: Enregistrement des paramtre de forages (ISO 22476-15:2016) Geotechnische Erkundung und Untersuchung - Felduntersuchungen - Teil 15: Aufzeichnung der B
6、ohrparameter (ISO 22476-15:2016) This European Standard was approved by CEN on 7 August 2016. 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-dat
7、e 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
8、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, Form
9、er Yugoslav Republic of Macedonia, 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 COMIT
10、EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 22476-15:2016 EBS EN ISO 22476-15:2016EN ISO 22476-15
11、:2016 (E) 3 European foreword This document (EN ISO 22476-15:2016) has been prepared by CEN/TC 341 “Geotechnical Investigation and Testing”, the secretariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 182 “Geotechnics”. This European Standard shall be given the status o
12、f a national standard, either by publication of an identical text or by endorsement, at the latest by February 2017, and conflicting national standards shall be withdrawn at the latest by February 2017. Attention is drawn to the possibility that some of the elements of this document may be the subje
13、ct 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 organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bul
14、garia, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, T
15、urkey and the United Kingdom. Endorsement notice The text of ISO 22476-15:2016 has been approved by CEN as EN ISO 22476-15:2016 without any modification. BS EN ISO 22476-15:2016ISO 22476-15:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Symbols 25 Equ
16、ipment . 35.1 General . 35.2 Drilling equipment. 45.3 Measuring system . 45.3.1 General 45.3.2 Sensors for hydraulic pressures . 55.3.3 Measuring system for penetration length 55.3.4 Measuring system for flushing medium flow 55.3.5 Measuring system for rotational speed 55.3.6 Measuring of hammering
17、energy 65.3.7 Reflected vibrations 65.3.8 Time 65.4 Selection of measured parameters 65.5 Factors influencing MWD results 75.5.1 Tool influence . 75.5.2 Drilling rig influence . 75.5.3 Operator influence . 76 Test procedures . 76.1 General . 76.2 Position and level of drill rig . 86.3 Preparation of
18、 the measurement 86.4 Drilling procedure 86.5 Frequency of logging parameters . 96.6 Registration of penetration length . 96.7 Test completion 96.8 Equipment checks and calibrations . 107 Test results .107.1 General 107.2 Calculated parameters . 107.2.1 General. 107.2.2 Penetration rate .107.2.3 Dow
19、n-thrust pressure 107.2.4 Net down-thrust pressure 117.2.5 Flushing medium pressure 117.2.6 Drill head rotational torque 118 Reporting .128.1 General 128.2 Reporting of test results . 12Annex A (informative) Application of drilling parameters 14Annex B (informative) Graphical presentation of drillin
20、g parameters .20Bibliography .22 ISO 2016 All rights reserved iiiContents PageBS EN ISO 22476-15:2016ISO 22476-15:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International St
21、andards 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
22、 take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In
23、 particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements
24、 of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (s
25、ee www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence
26、to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.ISO 22476-15 was prepared by the European Committee for Standardization (CEN) in collaboration with ISO/TC 182, Geotechnics, in accordance with the Agreement
27、 on technical cooperation between ISO and CEN (Vienna Agreement).A list of all parts in the ISO 22476 series, published under the general title Geotechnical investigation and testing Field testing, can be found on the ISO website.iv ISO 2016 All rights reservedBS EN ISO 22476-15:2016ISO 22476-15:201
28、6(E)IntroductionThe measuring-while-drilling (MWD) method deals with the recording of the machine parameters during the drilling process. This can be done manually or with the use of computerized systems which monitor a series of sensors installed on rotary and/or percussive drilling equipment. Thes
29、e sensors continuously and automatically collect data on all aspects of drilling, in real time, without interfering with the drilling progress. The data are displayed in real time and are also recorded for further analysis. Examples for interpretation of the results are presented in Annex A.The bore
30、hole can be used for other applications such as installation of monitoring equipment, geophysical logging or realization of expansion tests. The interpretation of the MWD results can be done in relation with the information provided by sampling.It should be noted that measured and calculated drillin
31、g parameters are relative and dependant of the test conditions, procedures and equipment. ISO 2016 All rights reserved vBS EN ISO 22476-15:2016BS EN ISO 22476-15:2016Geotechnical investigation and testing Field testing Part 15: Measuring while drilling1 ScopeThis part of ISO 22476 specifies the tech
32、nical principles for measuring equipment requirements, the execution and reporting on the parameters of the investigation drilling process for geotechnical purposes.It is applicable to top-driven, destructive drilling methods performed by a fully hydraulically powered drill rig and driving device. I
33、t is commonly used with destructive drilling techniques but can also be used with core drilling.The recording of the drilling parameters during soil grouting, drilling of nails, anchors or piles are beyond the scope of this part of ISO 22476.2 Normative referencesThe following documents are referred
34、 to in the text in such a way that some or all of their content constitutes requirements 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 investig
35、ation and testing 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 22475-1, Geotechnical investigation and testing Sampling methods a
36、nd ground water measurements Part 1: Technical principles for execution3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 22475-1 and the following apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses:
37、 IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp3.1drilling parametersparameters measured and recorded on the drill rig during drilling (mainly hydraulic pressures, depth, penetration rate, rotation speed, fluid pressure and
38、 flow, etc.)3.2compound parametersparameters derived from the combination of a number of the drilling parametersINTERNATIONAL STANDARD ISO 22476-15:2016(E) ISO 2016 All rights reserved 1BS EN ISO 22476-15:2016ISO 22476-15:2016(E)3.3reflected vibrationacceleration due to elastic rebound of rods compr
39、essed by hammer impact3.4penetration lengthlength measured along the axis of the borehole between ground level and the drilling tool3.5penetration raterate of penetration of drilling tool into the ground3.6down thrust pressurethrust pressure applied to drilling tool3.7holdback pressurepressure limit
40、ing penetration rate due to safety requirements3.8flushing medium pressurepressure at the level of the drilling tool3.9torquedrill head rotational torque3.10rotation speeddrill head rotational speed3.11flushing medium circulation raterate of output of drilling tool down the hole4 SymbolsSymbol Name
41、Unita measured penetration length m efficiency coefficient of down-thrust work efficiency coefficient of torque work efficiency coefficient of hammering work CRmeasured drill head torque kNmCR maxmaximum measured drill head torque kNmdoexternal diameter of drill bit mmE calculated drilling energy JE
42、Scalculated specific energy JERmeasured reflected vibrations Jf hammer frequency HzFmaxmaximum down thrust force kNHmaxmaximum hold back force kNIAcalculated alteration index N quantity of rods p measured hydraulic pressure in feed motor or cylinder MPa2 ISO 2016 All rights reservedBS EN ISO 22476-1
43、5:2016ISO 22476-15:2016(E)Symbol Name UnitpCRmeasured hydraulic pressure in torque motor MPapCROunloaded torque motor pressure MPapCR maxmaximum measured hydraulic pressure in torque motor MPapHmeasured hold back pressure MPapIcalculated flushing medium pressure at output of the drilling tool MPapEc
44、alculated net down-thrust (or feed thrust) applied on drilling tool MPapFmeasured flushing medium pressure at output of the pump MPapMmeasured hammering pressure MPapmaxmaximum measured down-thrust pressure MPapOraw down-thrust (or feed thrust) applied on drilling tool MPapHCcalculated holdback pres
45、sure MPapH maxmaximum measured holdback pressure MPaPRpenetration resistance s/0,2 mQImeasured borehole drilling fluid inflow l/minQOmeasured borehole drilling fluid outflow l/minRSRcalculated soil-rock resistance MPa m1s1Sdcalculated Somerton index sOmeasured area removed by drill bit (= drilling t
46、ool surface) m2t measured time svApenetration rate m/hvRmeasured drill head rotational speed r/minWHweight of rotary head kNWRweight of drill rod kNZ measured depth mrwmeasured ground water table depth m5 Equipment5.1 GeneralDrilling parameters can be considered as being in one of three categories.
47、Parameters imposed by the method (type of drilling tool and diameter, nature of the fluid medium, limits of machine performance and injection system) and unmanaged scalable parameters (tools wear, changes in the composition of the fluid). Parameters set by the operator (pOdown-thrust, vRdrill head r
48、otational speed, QIflushing medium circulation rate in the case of an incompressible or water based drilling fluid, pIinjection pressure in the case of a compressible air based fluid), Parameters depending on the response of the ground (vApenetration rate, CRtorque, pIinjection pressure in the case
49、of an incompressible or water based fluid, QIflushing medium circulation rate in the case of a compressible air-based fluid),These parameters may be measured directly or calculated using calibration relations. Further compound parameters may be derived by combining a number of drilling parameters (see A.2.) ISO 2016 All rights reserved 3BS EN ISO 22476-15:2016ISO 22476-15:2016(E)5.2 Drilling equipmentDrilling machines with appropriate stability, power and equipment such as drilling rods and bits shall be selected in o
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