车集煤矿底抽巷穿层钻孔有效抽采半径研究  

Study on effective drainage radius of layer-crossing boreholes in Juji Coal Mine

作　　者：王振军 Wang Zhenjun(Juji Coal Mine,Yongcheng Coal Company,Henan Energy and Chemical Industry Group,Yongcheng 476600,China)

机构地区：[1]河南能源化工集团永煤公司车集煤矿,河南永城476600

出　　处：《能源与环保》2022年第3期67-73,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：贵州省科技计划项目(黔科合支撑[2021])。

摘　　要：钻孔抽采瓦斯是有效防治矿井瓦斯、消除突出危险的重要措施,钻孔有效抽采半径是抽采的重要参数。为了合理确定车集煤矿穿层预抽钻孔的布孔间距,通过现场实测,采用瓦斯流量法和瓦斯含量法对26采区的普通孔、水力冲孔的有效抽采半径进行考察,并根据车集煤矿二_(2)煤层实际赋存情况,采用Comsol数值模拟软件对普通孔、水力冲孔的有效抽采半径进行验证。研究结果表明:现场实测所得到的有效抽采半径与数值模拟结果相差不超过6.1%,验证了现场实测方法的合理性与准确性。研究结果可为车集煤矿二_(2)煤层瓦斯抽采设计提供依据。Borehole gas drainage is an important measure to effectively prevent and control mine gas and eliminate outburst danger.The effective drainage radius of borehole is an important parameter of drainage.In order to reasonably determine the hole spacing of through layer pre-drainage holes in Juji Coal Mine,through field measurement,the effective drainage radius of ordinary holes and hydraulic punching holes in mining area 26 is investigated by using gas flow method and gas content method.According to actual occurrence of coal seamⅡ_(2) in Juji Coal Mine,Comsol numerical simulation software is used to simulate ordinary holes.The effective extraction radius of hydraulic punching is verified.

关 键 词：瓦斯抽采 穿层钻孔 有效抽采半径 现场实测 数值模拟 

分 类 号：TD712.6[矿业工程—矿井通风与安全]