NB/T 11257-2023 English PDFUS$299.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. NB/T 11257-2023: Safety conditions assessment of water hazards prevention and control of mining and tunnelling working face in underground coal mine Status: Valid
Basic dataStandard ID: NB/T 11257-2023 (NB/T11257-2023)Description (Translated English): Safety conditions assessment of water hazards prevention and control of mining and tunnelling working face in underground coal mine Sector / Industry: Energy Industry Standard (Recommended) Classification of Chinese Standard: D00 Classification of International Standard: 73.040 Word Count Estimation: 15,158 Date of Issue: 2023-05-26 Date of Implementation: 2023-11-26 Issuing agency(ies): National Energy Administration NB/T 11257-2023: Safety conditions assessment of water hazards prevention and control of mining and tunnelling working face in underground coal mine---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. ICS 73.040 CCSD00 Energy Industry Standards of the People's Republic of China Evaluation of safety conditions for water prevention and control in mining working faces in underground coal mines Published on 2023-05-26 Implemented on 2023-11-26 Released by the National Energy Administration Table of contentsPrefaceⅠ 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 General requirements for evaluation 1 5 Evaluation of safety conditions for water prevention and control in coal mining face 2 6 Evaluation of safety conditions for water prevention and control in excavation working face 6 Appendix A (Informative) Coal Mining Face Water Damage Prevention and Control Evaluation Form 9 Appendix B (informative) Water damage prevention and control evaluation form for excavation working face 10 Reference 11ForewordThis document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by the China Coal Industry Association. This document is under the jurisdiction of the Coal Mine Safety Standardization Technical Committee of the Coal Industry. This document was drafted by. National Energy Group Guoyuan Electric Power Co., Ltd., Shenhua Shendong Electric Power Co., Ltd., China Shenhua Energy Co., Ltd. Co., Ltd., China Coal Industry Association Productivity Promotion Center, China Coal Science and Engineering Xi’an Research Institute (Group) Co., Ltd. The main drafters of this document. Liu Shengyou, Zhao Baofeng, Wang Shidong, Zheng Houfa, He Xin, Yang Yang, Zhang Feng, Liu Haiyi, Zhang Yi, Xu Dexuan, Zhao Huiguo, Liu Bin. Evaluation of safety conditions for water prevention and control in mining working faces in underground coal mines1 ScopeThis document stipulates the general requirements for the evaluation of water safety conditions for mining working faces in underground coal mines, and the safety conditions for water prevention and control in coal mining working faces. The main contents and requirements of the evaluation, and the main contents and requirements of the evaluation of water safety conditions for excavation working face. This document is applicable to the evaluation of safety conditions for water prevention and control in underground coal mine mining working faces.2 Normative reference documentsThe contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 15663 (all parts) Coal mine scientific and technological terminology3 Terms and definitionsThe terms and definitions defined in GB/T 15663 (all parts) and the following apply to this document. 3.1 Before mining activities, by analyzing and evaluating the hydrogeological conditions, water filling conditions and water prevention and control measures taken at the mining face, It is a process of judging whether the safety conditions are met item by item, and finally comprehensively judging whether the mining working face meets the safety conditions.4 General requirements for evaluation4.1 Evaluation objectives By evaluating the implementation of various elements and measures to prevent and control water in the mining working face, we can determine whether the mining working face can produce safely. There is one item If it does not meet the requirements, measures should be taken and re-evaluated until all conditions meet the requirements and the mining working surface can be produced safely. 4.2 Preparation for evaluation 4.2.1 Basic information Collect mine hydrogeology type reports, various special water damage risk assessment reports, survey reports on hidden disaster-causing geological factors, and the "three water hazard prevention and control" reports. "Area" management report, mining working face geophysical prospecting results report, geological description, water exploration and release design, water exploration and release summary, past mining activity data and other basic Based on the basic data, we will comprehensively analyze and evaluate the detection, treatment, verification and evaluation of various water hazards in the mining working face. 4.2.2 Water prevention and control measures Evaluate the pertinence, implementation and effectiveness of special water prevention and control measures for the main types of water damage in mining working surfaces. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of NB/T 11257-2023_English be delivered?Answer: Upon your order, we will start to translate NB/T 11257-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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