被保护层工作面瓦斯来源分析及治理技术  

Gas source analysis and control technology in protected coal seam face

作　　者：陈本良 杨庆亮 杨立 邓明明[3] 孙京 任波 邓东生 Chen Benliang;Yang Qingliang;Yang Li;Deng Mingming;Sun Jing;Ren Bo;Deng Dongsheng(State Key Laboratory of Deep Coal Mining&Environment Protection,Huainan 232000,China;Anhui University of Science and Technology,Huainan 232000,China;Zhujidong Coal Mine,Huainan Mining Group,Huainan 232087,China;Zhengzhou Metro Group Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]深部煤炭开采与环境保护国家重点实验室,安徽淮南232000 [2]安徽理工大学,安徽淮南232000 [3]淮南矿业集团朱集东煤矿,安徽淮南232087 [4]郑州地铁集团有限公司,河南郑州450000

出　　处：《能源与环保》2019年第8期19-23,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家重点研发计划项目(2016YFC0801402);国家重大科研仪器研制项目(51427804)

摘　　要：为研究被保护层高瓦斯工作面瓦斯来源,综合运用分源预测、统计、碳同位素分析等方法,首次发现了被保护层工作面上覆围岩一次破坏形成的裂隙中残存有大量游离瓦斯。在朱集东煤矿被保护层1111(3)工作面进行工程实践,优化了“顶板走向钻孔+边孔”系统布置,改进了护孔套管连接方式,“管到底”率达到95%,单孔瓦斯抽采量增加3.5倍左右,工作面瓦斯抽采率达到88%,回风瓦斯浓度控制在0.36%以下,平均0.12%,平均日产量8300t,实现了安全高产高效。In order to study source of gas in high gas workface of protected coal seam,through comprehensive application of different sources prediction method,statistical method and carbon isotope analysis method,a large amount of free gas in fracture formed by a destruction of overlying surrounding rock in the working face of protected layer was first discovered.In the practice of gas control engineering of 1111(3) protected working face in Zhujidong Coal Mine,system arrangement of "roof strike hole and side hole" was optimized,and the connection way of hole casing pipe was improved.By using the above technology,the "pipe to bottom" rate was 95% and single hole gas extraction increased by about 3.5 times,and the gas drainage rate was 88% and the concentration of return air gas was below 0.36%,and the average of which was 0.12%,and daily output can reach 8 300 t,and gaining safety,high yield and high efficiency.

关 键 词：被保护层 瓦斯来源 顶板走向钻孔 护孔管 

分 类 号：TD712[矿业工程—矿井通风与安全]