| 极薄煤层采空区瓦斯治理试验研究 |
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| 引用本文： | 游钦峰,唐海,袁超,杨昭俊.极薄煤层采空区瓦斯治理试验研究[J].矿业工程研究,2011,26(1). |
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| 作者姓名： | 游钦峰 唐海 袁超 杨昭俊 |
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| 作者单位： | 1. 叙永鑫福煤业有限公司,后山煤矿,四川,泸州,646415
2. 湖南科技大学煤矿安全开采技术湖南省重点实验室,湘潭,411201 |
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| 基金项目： | 湖南省高校科技创新团队支持计划资助项目 |
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| 摘 要： | 根据矿山压力分布规律,并结合后山煤矿实例,采用增大风量、设瓦斯专用排放巷、采空区埋管和高位钻孔抽放瓦斯等多项试验,研究极薄煤层采空区瓦斯治理.试验结果表明高位钻孔抽放瓦斯方法较好,能使瓦斯浓度降至1%以下.高位钻孔抽放瓦斯试验研究发现:钻孔内瓦斯浓度变化具有先缓慢上升,到最大值后趋于稳定,最后再下降的规律;钻孔有效长度与顶板来压有关.
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| 关 键 词： | 极薄煤层 采空区 高位钻孔 卸压瓦斯 有效长度 |
Experimental study of controlling gas in goaf of extreme thin coal seam |
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| YOU Qinfeng,TANG Hai,YUAN Chao,YANG Zhaojun.Experimental study of controlling gas in goaf of extreme thin coal seam[J].Mineral Engineeering Reseach,2011,26(1). |
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| Authors: | YOU Qinfeng TANG Hai YUAN Chao YANG Zhaojun |
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| Affiliation: | YOU Qinfeng1,TANG Hai2,YUAN Chao2,YANG Zhaojun1 (1. Houshan Coal Mine,Xuyong Xinfu Coal Industry Co. Ltd.,Luzhou 646415,China,2. Hunan Provincial Key Laboratory o f Safe Mining Techniques of Coal Mines,Hunan University of Science and Techno logy,Xiangtan 411201,China) |
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| Abstract: | According to the underground pressure distribution rule and an example of Houshan coal mine, this paper studied of controlling gas in goaf of extreme thin coal seam with increasing flux of wind, designing emission roadway special for controlling gas, arranging pipeline gas drainage method and high level borehole drilling to extract gas. The high level borehole drilling can make gas concentration to reduce less than 1%, and is a better method than other ones. Also, the change law of gas concentration in bore... |
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| Keywords: | extreme thin coal seam goaf high level borehole stress-relaxation gas effective length |
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