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Coal and gas outburst mechanism of the “Three Soft” coal seam in western Henan

✍ Scribed by Dongji LEI; Chengwu LI; Zimin ZHANG; Yugui ZHANG

Publisher
Elsevier
Year
2010
Tongue
English
Weight
555 KB
Volume
20
Category
Article
ISSN
1674-5264

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With the increase in mining depth, the danger of coal and gas outbursts increases. In order to drain coal gas effectively and to eliminate the risk of coal and gas outbursts, we used a specific number of penetration boreholes for draining of pressure relief gas. Based on the principle of overlying s