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NB/T 11646-2024: Technical Specification for monitoring and early warning of natural ignition in spoil areas of shaft mines
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| NB/T 11646-2024 | English | 139 |
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Technical Specification for monitoring and early warning of natural ignition in spoil areas of shaft mines
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NB/T 11646-2024
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Basic data | Standard ID | NB/T 11646-2024 (NB/T11646-2024) | | Description (Translated English) | Technical Specification for monitoring and early warning of natural ignition in spoil areas of shaft mines | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | D09 | | Classification of International Standard | 13.100 | | Word Count Estimation | 6,621 | | Date of Issue | 2024-09-24 | | Date of Implementation | 2025-03-24 | | Issuing agency(ies) | National Energy Administration | NB/T 11646-2024: Technical Specification for monitoring and early warning of natural ignition in spoil areas of shaft mines
---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.
Technical Specification for monitoring and early warning of natural ignition in spoil areas of shaft mines
Energy Industry Standards of the People's Republic of China
The National Energy Administration released
Spontaneous combustion monitoring in goaf of underground coal mines
Warning technical specifications
Technical Specification for monitoring and early warning of
natural ignition in spoil areas of shaft mines
Published on 2024-09-24
2025-03-24 Implementation
CCS D 09
ICS 13.100
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 for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Coal Industry Association.
This document is under the jurisdiction of the Coal Industry Coal Mine Safety Standardization Technical Committee.
This document was drafted by. Huaihe Energy Western Coal and Electricity Group Co., Ltd., Anhui University of Science and Technology, China Coal Technology and Engineering Group Shenyang Research Institute
Co., Ltd., Xi'an University of Science and Technology, Huainan Mining (Group) Co., Ltd., Huaneng Coal Technology Research Co., Ltd., Ordos Zhongbei Coal
Chemical Co., Ltd.
The main drafters of this document are. Gao Song, Cai Feng, Sun Yong, Fang Jixiang, Pan Zhongde, Hu Jisong, Deng Jun, You Jijun, Dou Wencong, Ge Qiyuan, Lu Wei,
Wang Chenkai, Han Baoyin, Wang Ruide, Yu Quanbing, Huang Shengbin, Su Jingxiang, Li Yongyuan, Sun Fulong, Li Chao, Tao Chaoxin, Xue Juyun, Jing Yong, Li Jie,
Li Zhiguo, Feng Juqiang, Zhang Qian, and Fan Jiafeng.
Spontaneous combustion monitoring in goaf of underground coal mines
Warning technical specifications
1 Scope
This document specifies the general provisions, monitoring technology, early warning technology and methods for monitoring and early warning of spontaneous combustion in goaf areas of coal mining working faces in underground coal mines.
Techniques and conditions for determining the “three zones” of spontaneous combustion in goaf areas, etc.
This document is applicable to the monitoring and early warning of spontaneous combustion in goaf areas of coal mining faces in underground coal mines.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.
document.
GB/T 15663.8 Coal Mine Scientific and Technological Terminology Part 8.Coal Mine Safety
KA/T 1019 Gas chromatography analysis of spontaneous combustion in coal seams and index selection method
MT/T 757 General technical requirements for spontaneous combustion bundle pipe monitoring system in coal mines
3 Terms and definitions
The terms and definitions defined in GB/T 15663.8 and the following apply to this document.
3.1
Fire coefficient
It is an index parameter that can reflect that coal has entered a certain stage in the process of low-temperature oxidation heat storage.
3.2
Oxidizing zone
The area where the coal left in the goaf combines with oxygen in the air to undergo physical and chemical changes and store heat.
3.3
alarming critical value
A specific value in the oxidation heat storage process of coal. When this value is reached or exceeded, the oxidation heat storage process of coal will enter a new stage.
4 General Provisions
4.1 Coal mines should establish a system for predicting and forecasting spontaneous combustion in goaf areas, and dynamically grasp the potential spontaneous combustion hazards or spontaneous combustion situations in goaf areas.
4.2 When mining coal seams that are prone to spontaneous combustion or self-ignition, the gas concentration in the goaf of the coal mining face and the gas extraction pipeline should be monitored daily;
For coal-burning seams, spontaneous combustion monitoring of goaf areas should be carried out at least once a week.
4.3 Coal mines should establish a spontaneous combustion monitoring and early warning system, collect statistics on the changes in spontaneous combustion indicators, draw trend charts, and conduct spontaneous combustion monitoring and early warning.
Fire prediction. once a certain indicator is found to reach a critical value, a forecast should be made quickly.
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