L型井采空区瓦斯抽采技术的应用.pdfVIP

Vol郾43 No郾3 矿业安全与环保 第43卷摇 第3期 Jun郾2016 摇 摇 摇 摇 摇 摇 摇 摇 摇 MINING SAFETY ENVIRONMENTAL PROTECTION摇 摇 摇 摇 摇 摇 摇 2016年6月 柯昌友,温俊三,李海贵,等.L型井采空区瓦斯抽采技术的应用[J].矿业安全与环保,2016,43(3):64-66. 文章编号:1008-4495(2016)03-0064-03 L型井采空区瓦斯抽采技术的应用 柯昌友,温俊三,李海贵,刘摇 毅 (晋城无烟煤矿业集团有限责任公司,山西晋城048006) 摘要:为解决寺河矿3313采煤工作面回采过程中上隅角瓦斯浓度高的问题,运用地面井施工新技 术,在3313 工作面煤层顶板裂隙带施工一口水平井,利用地面瓦斯抽采泵站通过L 型井对采煤工作面 3 的采空区瓦斯进行抽采。 地面L 型抽采井运行后,平均抽采瓦斯纯量为16郾74 m / min,瓦斯浓度为 3 70% ~90%,日均抽采瓦斯纯量约2郾4 万m 。 在采煤工作面日产量增加约2500 t 的情况下,回风流中 平均瓦斯浓度降低约0郾11%。 关键词:L 型井;瓦斯防治;裂隙带;采空区瓦斯 + 中图分类号:TD712 .6摇 摇 摇 文献标志码:B摇 摇 摇 网络出版时间:2016-06-05 18:10 网络出版地址:http:/ / / kcms/ detail/ 50.1062.TD1810.026.html Application of Gob Gas Drainage Technology with L-type Well KE Changyou,WEN Junsan,LI Haigui,LIU Yi (ShanxiJinchengAnthracite Mining Group Co. ,Ltd. ,Jincheng 048006,China) Abstract:Tosolvetheproblemofdisallowedgasconcentrationattheuppercorneranglein3313workingfaceinSiheMine during coal mining, a horizontal well was dilled in the roof fractured zone of this working face by using the new drilling technology of surface wells,gas drainage from the gob of the working face was conducted by the surface gas drainage pump station through the L-type well. After the operation of the surface L-type well,the average pure gas drainage quantity was 3 4 3 16.74 m / min,the gas concentration was70% ~90%,andthedaily averagegasdrainagequantitywasabout2.4伊10 m . In the case of the daily coal output of th