| 车集煤矿底抽巷穿层钻孔有效抽采半径研究 |
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| 引用本文： | 王振军.车集煤矿底抽巷穿层钻孔有效抽采半径研究[J].中州煤炭,2022,0(3):67-73. |
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| 作者姓名： | 王振军 |
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| 作者单位： | 河南能源化工集团 永煤公司车集煤矿，河南 永城476600 |
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| 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...
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| 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 |
Study on effective drainage radius of layer-crossing boreholes in Juji Coal Mine |
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| Wang Zhenjun. Study on effective drainage radius of layer-crossing boreholes in Juji Coal Mine[J].Zhongzhou Coal,2022,0(3):67-73. |
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| Authors: | Wang Zhenjun |
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| Affiliation: | Juji Coal Mine，Yongcheng Coal Company，Henan Energy and Chemical Industry Group，Yongcheng476600，China |
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| Abstract: | 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 seam Ⅱ2 in Juji Coal Mine，Comsol numerical simulation software is used to simulate ordinary holes.The effective extraction radius of hydraulic punching is verified. |
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| Keywords: | gas extraction layer-crossing boreholes effective drainage radius field measurement numerical simulation |
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