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NB/T 10734-2021 English PDF

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NB/T 10734-2021: Code of practice for controlled source audio-frequency magneto telluric method in coal
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PDF similar to NB/T 10734-2021


Standard similar to NB/T 10734-2021

GB/T 17766   DZ/T 0215   

Basic data

Standard ID NB/T 10734-2021 (NB/T10734-2021)
Description (Translated English) Code of practice for controlled source audio-frequency magneto telluric method in coal
Sector / Industry Energy Industry Standard (Recommended)
Classification of Chinese Standard D11
Word Count Estimation 30,325
Issuing agency(ies) National Energy Administration

NB/T 10734-2021: Code of practice for controlled source audio-frequency magneto telluric method in coal


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Code of practice for controlled source audio-frequency magnetotelluric method in coal ICS 73.020 CCSD11 People's Republic of China Energy Industry Standard Technical Specification for Coal Controlled Source Audio Magnetotelluric Sounding methodincoal Published on 2021-11-16 2022-02-16 Implementation Released by the National Energy Administration directory Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbols and units of measure 1 5 General 2 6 Technical Design 2 7 Use and maintenance of instruments and equipment 5 8 Fieldwork 6 9 Data processing and interpretation 12 10 Report preparation and submission 13 Appendix A (Informative) Design Compilation and Approval Requirements 15 Appendix B (Informative) Field Observation Records 17 Appendix C (Informative) Field Leakage, Grounding Resistance, Range Detection Methods 18 Appendix D (Informative) Full Video Resistivity and Phase Curve Quality Rating Table 20 Appendix E (Informative) Checkpoint Error Statistics Table 21 Appendix F (Informative) Statistical Table of Quality Rating of the Region 22 Appendix G (Informative) Report Compilation Content and Figure 23 Reference 25

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document is proposed by China Coal Industry Association. This document is under the jurisdiction of the National Coal Standardization Technical Committee (SAC/TC42). Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is drafted by. Hydrogeological Bureau of China General Administration of Coal Geology, Yangquan Coal Industry (Group) Co., Ltd., Qinghai Coal Geological Exploration Investigation Institute, Jiangsu Coal Geology and Geophysical Survey Team, Geophysical Exploration Research Institute of China General Administration of Coal Geology, Fujian Coalfield Geology Bureau, China Mining University Science, China Coal Science and Industry Group Xi'an Research Institute Co., Ltd., and the Hydrographic Survey Team of China General Administration of Coal Geology. The main drafters of this document. Ma Ruihua, Diao Qingjian, Tan Zhongfang, Luo Guoping, Han Depin, Zhao Prasodymium, Guo Shaohua, Liu Shucai, Yu Jingcun, Luan Guoting, Ni Xinhui, Lin Guohua, Zheng Honglei, Liu Zuiliang, Zhai Guangqing, Cheng Yan.

Introduction

For a long time, the exploration of coal controlled source audio frequency magnetotelluric method has mainly been based on the "Technical Regulations of Controlled Source Audio Frequency Magnetotelluric Method" (DZ/T 0280-2015) for resource and geological structure exploration. In recent years, with the development of coal mining intensity, mining depth and mining methods With the continuous changes in the field, the geological problems to be solved have changed. At the same time, the controllable source audio magnetotelluric sounding exploration equipment has been continuously updated, The technical level has been continuously improved and the application has become more extensive. In order to meet the needs of the current coal geological exploration work, the controllable source audio frequency magnetotelluric method is standardized. In the field of coal geological exploration, the General Administration of Coal Geology of China, together with relevant production units, scientific research institutes and colleges and universities, etc. The current situation of carbon controllable source audio magnetotelluric sounding exploration equipment and technology, based on the principles of advancement, consistency, standardization and practicability, has compiled the "Coal Carbon Controlled Source Audio Magnetotelluric Sounding Technical Regulations. Technical Specification for Coal Controlled Source Audio Magnetotelluric Sounding

1 Scope

This document specifies the technical design and instrumentation of the controllable source audio frequency magnetotelluric sounding method (CSAMT) in coal geological exploration. Equipment use and maintenance, field work, data processing and interpretation, report preparation and submission and other technical requirements. This document is applicable to the controllable source magnetotelluric sounding in the exploration of coal geological resources, coal field hydrogeology, and hidden hazard-causing geological factors in coal mines law work.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 14499 Geophysical prospecting technical symbols CH/T.2009 Global Positioning System Real Time Kinematics (RTK) Technical Specification DZ/T 0069 Geophysical Exploration Map Schema Legend and Color Standard DZ/T 0153 Specification for Geophysical and Geochemical Exploration Engineering Measurements

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 A kind of artificial source Karnia apparent resistivity measurement developed on the basis of magnetotelluric method (MT) and audio frequency magnetotelluric method (AMT). deep method. The transmitter is used to supply alternating current in the audio frequency range to the ground through ground electrodes A and B, and an alternating electromagnetic field is formed underground. The electromagnetic field from a fairly distant source is close to the position of the plane wave, and the horizontal component of the electric field (Ex or Ey) and the horizontal component of the magnetic field (Hy or Hx) are measured, It is a frequency domain electromagnetic sounding method to detect the geological target body by calculating the apparent resistivity and impedance phase of Karnia at the corresponding frequency. 3.2 TMmodeTMmode The power supply electrode AB, the receiving electrode MN and the direction of the survey line are arranged perpendicular to the strike of the geological structure.

4 Symbols and units of measure

Common terms, symbols and measurement units are shown in Table 1. Table 1 Common terms, symbols and measurement units serial number term name symbol unit of measure 1 Send and receive distance rm, km (meters or kilometers) 2 Supply electrode distance from AB m, km (meters or kilometers) 3 Receive pole distance MN m (meters)

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