大兴矿N2-203开采保护层卸压瓦斯抽采研究  

Study on Depressurization Gas Drainage of Protective Seam Mining in Working Face N2-203 of Daxing Mine

作　　者：王瑞妮[1,2] 胡春岩[1,2] 刘军[1,2] 解丽娜[1] 张书莉 王福超[1] 

机构地区：[1]辽宁工程技术大学安全科学与工程学院,阜新123000 [2]矿山热动力灾害与防治教育部重点实验室,阜新123000

出　　处：《世界科技研究与发展》2015年第3期235-238,共4页World Sci-Tech R&D

摘　　要：针对开采保护层时瓦斯容易超限的问题,分析了开采煤层过程中,保护层在采动应力作用下卸压增流效应及卸压瓦斯运移规律,采用了对被保护层瓦斯卸压抽采和分源治理的技术措施,以大兴矿瓦斯治理为例,通过实施"封堵漏风口、浅埋大管路、短抽上隅角"等开采保护层和钻孔抽采瓦斯等关键性治理技术,解决了开采高瓦斯煤层群过程中综采面大面积悬顶上隅角空间和回风流中浓度超限的问题,实现瓦斯资源的回收再利用。Aiming at the problem that gas can easily exceed limit when protective seam is mined,using depressurization effect of seam mining and understanding the theory of simultaneous extraction of coal and gas—＂Depressurization Permeability Improved Effect＂produced by gas in the seam based on the impact of mining,measures of depressurization gas timing drainage and gas control for different sources for protected coal seam should be improved besides mining protective seam as a measure of regional outburst prevention. Taking gas control in Daxing mine as an example,some critical technique measures for mining protective coal seam and gas drainage from boreholes should be conducted,such as sealing off air leakage,burying pipeline of large diameter shallowly and draining upper corner shortly. The problem of gas exceed-limit in upper corner of fully mechanized and return current was solved in the process of mining high gas seam group and resource from gas can be recycled and reused.

关 键 词：开采保护层 卸压瓦斯抽采 上隅角瓦斯治理 短孔抽采 

分 类 号：TD712.6[矿业工程—矿井通风与安全]