GB 40880-2021 English PDFUS$389.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 40880-2021: Specification for coal mine gas classification identification Status: Valid
Basic dataStandard ID: GB 40880-2021 (GB40880-2021)Description (Translated English): Specification for coal mine gas classification identification Sector / Industry: National Standard Classification of Chinese Standard: D09 Word Count Estimation: 21,287 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB 40880-2021: Specification for coal mine gas classification identification---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.Specification for coal mine gas classification identification ICS 13.100 CCSD09 National Standards of People's Republic of China Code for appraisal of coal mine gas grade Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee Table of contentsForeword Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Classification of coal mine gas 2 5 General requirements 3 6 Outstanding mine identification 3 7 Appraisal of high gas mine grade 4 8 Appraisal report content 6 Appendix A (Normative) Calculation method for the amount of coal thrown out and the amount of gas emitted per ton of coal 8 Appendix B (normative) Classification of coal destruction types 9 Appendix C (Normative) Method for determination of coal firmness coefficient (f) 10 Appendix D (normative) Basic characteristics of coal and gas outburst 11 Appendix E (Normative) Basic Features of Rock and Carbon Dioxide (Gas) Outstanding 12 Appendix F (Normative) Basic Data Measurement and Measurement Results Report Form 13 Appendix G (Normative) Coal Mine Gas Dynamic Phenomenon Record Card 15ForewordThis 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" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed and managed by the National Mine Safety Supervision Bureau.IntroductionThe appraisal of coal mine gas rank is an important work to determine the coal mine gas rank, and it is an important basis for coal mine gas prevention and control. Our country is learning A lot of research work has been done in setting indicators and judgment rules. In.2006, the first two safety production AQ1024 and AQ1025 were released. Industry Standard. AQ1024-2006 and AQ1025-2006 have been issued and implemented for more than ten years. Both the Outstanding Regulations and the Interim Measures for the Appraisal of Coal Mine Gas Grades have been revised, and the relevant gas grade classification, appraisal indicators and judgment rules have been revised. Certain changes have also taken place. In January.2017, the Office of the State Council’s Standardization Coordination and Promotion Inter-ministerial Joint Conference issued a “Integrate and streamline” conclusions, confirm the integration of AQ1024-2006 and AQ1025-2006, and formulate the "Coal Mine Gas Grade Appraisal Specification" And it has been upgraded to a mandatory national standard. This document integrates AQ1024-2006 "Coal and Gas Outburst Mine Appraisal Specification" and AQ1025-2006 "Mine Gas Grade Appraisal" Compared with AQ1024-2006 and AQ1025-2006, except for structural adjustments and editorial changes, the main technical changes are as follows. a) According to the content of the document, the "scope" was re-expressed (see Chapter 1, AQ1024-2006 and AQ1025-2006 Chapter 1); b) The term names and definitions have been changed (see 3.1, 3.3, 3.4, 3.5, 3.9 and 3.11, AQ1024-2006 and AQ1025- 2006's 3.1, 3.2 and 3.3); c) Added terms and definitions (see 3.2, 3.6, 3.7, 3.8 and 3.10); d) The content of the expression of the classification of coal mine gas has been changed (see Chapter 4, AQ1025-2006, 6.2); e) The general requirements are changed (see Chapter 5, Chapter 4 of AQ1025-2006); f) The expression that highlights the basis of mine identification, the content of the identification basis and the method of evaluation Determination method" and the form of the appendix (see 6.1, 6.2, appendix A and appendix D, 5.1 of AQ1024-2006); g) Changed the measurement point layout of the coal seam outburst hazard index (see 6.2.3, 5.1.3 of AQ1024-2006); h) The expression form of the judgment rule for the identification of outstanding mines has been changed, and the identification of outstanding mines has been added (see 6.3, AQ1024-2006 5.2); i) The determination method and the elements for delimiting the scope of the non-outburst coal seam and the basis for delimitation have been added (see 6.3.2, 6.3.3); j) Added the basis for the identification of coal and carbon dioxide outburst mines (see 6.1.2, 6.3.1); k) The presentation form of the identification method for rock and carbon dioxide (gas) outburst mines and coal and carbon dioxide outburst mines has been changed (see Chapter 6, Chapter 9 of AQ1024-2006); l) Deleted the approval procedures for the identification of outstanding mines, the content of the entrusted evaluation report, the format requirements of the evaluation report, and the revision of the outstanding mines The nature of the procedures and report content and the measurement method of the initial gas emission velocity index (Δp) (see AQ1024-2006 Chapter 4, Chapter 6, 7.2, Chapter 8, and Appendix B); m) Added the appraisal index for the appraisal of high gas mine grade (see 7.1, 6.1 of AQ1025-2006); n) The instruments and meters that should be used for the determination of the identification indicators in the identification of high gas mines have been refined, and the ranges and ranges of the instruments and meters have been increased. Accuracy requirements (see 7.2, 5.1.4 of AQ1025-2006); o) The hierarchical structure of the "identification method" in the identification of high gas mines has been changed (see 7.3, Chapter 5 of AQ1025-2006); p) The measurement area, the measurement location and the area where the gas emission volume needs to be calculated have been increased or decreased (see 7.3.2.1, 7.3.4.2 and F.2, 5.2.2, 5.3.2 and A.2 of AQ1025-2006); q) Change the source method of gas drainage volume from "measurement" to "statistics" to clarify the statistical time period of gas drainage volume (see 7.3.2.2, 5.2.1 of AQ1025-2006); r) The judging elements of high gas mine grade identification have been added, and the expression form has been changed (see 7.4, 6.2 of AQ1025-2006); s) The identification of the high gas area of the low gas mine, the identification of the mine under construction and the basic situation table of the mine (see AQ1025- 2006 6.3, Chapter 8 and Appendix B); t) Added report content for identification based on coal seam outburst hazard indicators (see 8.1.2). Integrate AQ1024 and AQ1025 into one document and upgrade to a mandatory national standard, focusing on the expression of core elements Form, improve the terms and definitions, further clarify the requirements for the layout of measuring points, supplement the measurement methods of the identification indicators, and delete the identification management Relevant requirements, etc., the basis of identification is clearer, and the method of identification is more complete, which can effectively improve the scientific, standardized and identification of identification work The accuracy of the results. At the same time, it is more convenient for users to apply, and the timeliness is stronger. Code for appraisal of coal mine gas grade1 ScopeThis document specifies the classification, general requirements, appraisal basis, appraisal indicators and their measurement methods, judgment rules and appraisal of coal mine gas levels. Determine the content of the report, etc. This document is applicable to the identification of high gas mine grades, coal and gas (carbon dioxide) outburst mines and coal seams, as well as rock and secondary Identification of carbon oxide (gas) outburst in mines and rock formations.2 Normative referencesThe content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 15663.8 Coal Mine Science and Technology Terminology Part 8.Coal Mine Safety GB/T 23250 Direct measurement method of coal seam gas content underground GB/T 23561.12 Method for determination of physical and mechanical properties of coal and rock Part 12.Method for determination of solidity coefficient of coal AQ1018 Mine Gas Emission Forecast Method AQ1047 Direct Measurement Method of Coal Seam Gas Pressure in Coal Mine AQ1080 coal gas emission initial velocity index (Δp) measurement method AQ1083 Coal Mine Construction Safety Code MT380 Anemometer for Coal Mine3 Terms and definitionsGB/T 15663.8, GB/T 23561.12, AQ1018, AQ1047, AQ1080 and AQ1083 and the following terms and The definition applies to this document. 3.1 Coalminegasclassification Coal shingles classified according to the amount of gas emission, the form of gas emission, the actual gas dynamic phenomenon, and outburst hazard indicators, etc. The level of the degree of danger. 3.2 Gas dynamical phenomenon There is a phenomenon in which gas participates in or is accompanied by a large amount of gas gushing and coal (rock) produces a dynamic effect. 3.3 Coal (rock) and gas (carbondioxide) outburst Under the combined action of ground stress and gas (carbon dioxide), the broken coal (rock) and gas (carbon dioxide) suddenly moved from the coal (rock) body to the Abnormal dynamic phenomena thrown by the mining space. [Source. GB/T 15663.8-2008, 5.27, with modification] ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 40880-2021_English be delivered?Answer: Upon your order, we will start to translate GB 40880-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 40880-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB 40880-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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