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- Tuyen Le Trung
- Mine Safety Center, Institute of Mining Science and Technology, VINACOMIN
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- OHGA Kotaro
- Laboratory of Eco Materials and Resources, Division of Sustainable Resources Engineering, Hokkaido University
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- NAWA Toyoharu
- Laboratory of Eco Materials and Resources, Division of Sustainable Resources Engineering, Hokkaido University
Bibliographic Information
- Other Title
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- 長壁採炭切羽からのメタンガス湧出の推定と試験ガス抜き
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Abstract
Gas explosion in underground coal mines is a major hazard in coal production. Here, to evaluate gas emission increases in anthracite coal mines in Vietnam, estimated gas emissions from a long-wall panel were calculated by scale models of Mine Gas Stress (MGS) and Mine Gas Flow (MGF) for various depths of longwall panels with various gas contents. These calculated results suggest that it will be difficult to dilute the emitted methane gas by conventional ventilation even when gallery cross sections are enlarged in deeper coal seams containing much gas. The calculation results showed the necessity of gas drainage prior to actual mining to ensure the safety in coal exploitation. The paper also reviews gas explosion accidents in light of the calculated results of gas emissions and finds that many accidents occurred at the preparation stage of the coal mining panels, supporting the calculated results.
Journal
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- Journal of MMIJ
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Journal of MMIJ 131 (5), 189-194, 2015
The Mining and Materials Processing Institute of Japan
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Details 詳細情報について
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- CRID
- 1390001205281711360
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- NII Article ID
- 130005117346
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- NII Book ID
- AA12188381
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- ISSN
- 18840450
- 18816118
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- NDL BIB ID
- 026411303
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed