| 宣东二号煤矿综采工作面上隅角瓦斯治理技术 |
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| 引用本文： | 赵生山. 宣东二号煤矿综采工作面上隅角瓦斯治理技术[J]. 煤炭科学技术, 2010, 38(3) |
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| 作者姓名： | 赵生山 |
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| 作者单位： | 中国矿业大学(北京)资源与安全工程学院,北京,100083;冀中能源张家口矿业集团有限公司,河北,宣化,075100 |
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| 摘 要： | 为了解决宣东二号煤矿33207工作面上隅角瓦斯经常超限的问题,采用了内错低位巷抽放上隅角瓦斯技术,在抽放口周围形成了空气幕墙,有效隔截了采空区瓦斯向上隅角的流动,上隅角的瓦斯超限次数和时间都大幅下降,回风巷瓦斯体积分数由原来的1.5%降低到了1.0%,综采工作面月产量增加了1.5万t。
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| 关 键 词： | 上隅角 瓦斯超限 内错低位巷 空气幕墙 |
Control Technology for Top Corner Gas of Fully Mechanized Coal Mining Face in Xuandong No. 2 Mine |
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| ZHAO Sheng-shan. Control Technology for Top Corner Gas of Fully Mechanized Coal Mining Face in Xuandong No. 2 Mine[J]. Coal Science and Technology, 2010, 38(3) |
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| Authors: | ZHAO Sheng-shan |
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| Abstract: | In order to solve the problem of gas content over limits frequently occurred at the top corner of No.33207 mining face in Xuandong No.2 Mine,the top corner gas drainage technology in the inner dislocated low level gateway was applied to form an air curtain around the gas drainage borehole mouth,thus the technology could be efficiently to isolate the gas in the goaf flowing to the top corner.The frequency and time of the gas over limits at the top corner were highly reduced,the fraction of the gas volume in ... |
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| Keywords: | top corner gas content over limit inner dislocated low level gateway air curtain |
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