Behavior of Methane Gas and the Effects of an Additional Forcing Duct in Combined Auxiliary Ventilation System at Heading Faces with a Road Heading Machine
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- TOMITA Shinji
- Japan Coal Energy Center
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- UCHINO Kenichi
- Faculty of Engineering, Kyushu University
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- INOUE Masahiro
- Faculty of Engineering, Kyushu University
Bibliographic Information
- Other Title
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- 大型掘進機械の存在する掘進先における併用通気に伴うメタンガス挙動と分岐管の効果
- オオガタ クッシン キカイ ノ ソンザイ スル クッシンサキ ニ オケル ヘイヨウ ツウキ ニ トモナウ メタンガス キョドウ ト ブンキカン ノ コウカ
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Description
Auxiliary ventilation is required to remove dust and gases generated at heading faces in underground coal mines. Currently, quantities of dust and gases are increasing due to high development rates and large cross sectional areas of the roadways. Combined ventilation system is being adopted in order to remove such dust and gases more efficiently. The optimum design of the location of ventilation ducts and of airflow volume is very difficult. The flow pattern in the surrounding face of roadway in the coal seam by using combined ventilation system is very complicated.<BR>The authors have investigated the airflow patterns in combined ventilation system and the behavior of methane gas by visualization experiment with reduced scale models. This paper discusses the results of the examinations on optimum ventilation conditions to remove effectively methane gas generated in the heading faces where a cutting machine is working. During the experiment, additional forcing duct is set up with a view to preventing methane gas from concentrating at the overlapped zone and the effect of the forcing duct is investigated.
Journal
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- Shigen-to-Sozai
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Shigen-to-Sozai 119 (6/7), 383-388, 2003
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
- 1390001206050928000
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- NII Article ID
- 10011754006
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- NII Book ID
- AN10062646
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- ISSN
- 18806244
- 09161740
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- NDL BIB ID
- 6656622
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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