| 基于面积法优化缓倾斜煤层揭煤钻孔布置方式 |
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| 引用本文： | 刘军,吴泽平,张露伟,卫彦昭.基于面积法优化缓倾斜煤层揭煤钻孔布置方式[J].中国安全生产科学技术,2022,18(4):113-119. |
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| 作者姓名： | 刘军 吴泽平 张露伟 卫彦昭 |
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| 作者单位： | (1.河南理工大学 安全科学与工程学院，河南 焦作 454003； 2.河南省瓦斯地质与瓦斯治理重点实验室，河南 焦作 454003) |
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| 基金项目： | * 基金项目: 河南省科技攻关项目（222102320050）；河南省高校基本科研业务费专项项目（NSFRF210426） |
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| 摘 要： | 为解决缓倾斜煤层石门揭煤过程中钻孔施工工程量大、抽采周期长、抽采效果不佳等问题,在对比分析前人提出的钻孔优化理念基础上,提出面积法优化缓倾斜煤层揭煤钻孔布置方式,并利用层次分析法,分别从安全可靠性、施工工程量、钻孔均匀性、工程投资、建设工期等5个指标对3种方案进行考察,优选出最佳揭煤实施方案.同时,通过COMSOL软件...
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| 关 键 词： | 面积法 石门揭煤 瓦斯抽采 钻孔布置 层次分析法 数值模拟 |
Optimization of coal uncovering boreholes layout in gently inclined coal seam based on area method |
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| LIU Jun,WU Zeping,ZHANG Luwei,WEI Yanzhao.Optimization of coal uncovering boreholes layout in gently inclined coal seam based on area method[J].Journal of Safety Science and Technology,2022,18(4):113-119. |
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| Authors: | LIU Jun WU Zeping ZHANG Luwei WEI Yanzhao |
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| Affiliation: | (1.School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China;2.State Key Laboratory Cultivation Base for Gas Geology and Gas Control,Jiaozuo Henan 454003,China) |
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| Abstract: | In order to solve the problems of large amount of borehole construction,long drainage period,and poor drainage effect during the process of rock cross-cut coal uncovering in the gently inclined coal seam,based on the comparison and analysis of the borehole optimization concepts proposed by previous scholars,the optimization of coal uncovering boreholes layout in gently inclined coal seam based on area method was proposed.The analytic hierarchy process method was used to investigate three schemes from five indicators including safety and reliability,construction volume,uniformity of boreholes,project investment and construction period,and the best implementation scheme of coal uncovering was optimally selected.At the same time,the reliability of the boreholes layout scheme based on area method was simulated by COMSOL software.The results showed that using the area method to design the boreholes for the coal uncovering design in gently inclined coal seam was the best regional outburst prevention scheme with a quantitative score of 0.344,which was better than the quantitative results of the other two regional outburst prevention schemes.The numerical simulation showed that the time required for coal seam gas pressure drainage to be below 0.74 MPa was 67 to 85 days.This boreholes layout can provide theoretical guidance for the rock cross-cut coal uncovering in the gently inclined coal seam. |
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| Keywords: | area method rock cross-cut coal uncovering gas drainage borehole layout analytic hierarchy process numerical simulation |
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