| 钻孔割缝网络化增透机制及其在底板穿层钻孔瓦斯抽采中的应用 |
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| 引用本文： | 林柏泉,张其智,沈春明,杨威.钻孔割缝网络化增透机制及其在底板穿层钻孔瓦斯抽采中的应用[J].煤炭学报,2012,37(9):1425-1430. |
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| 作者姓名： | 林柏泉 张其智 沈春明 杨威 |
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| 作者单位： | 1.煤炭资源与安全开采国家重点实验室，江苏 徐州 221008；;
2.中国矿业大学 安全工程学院，江苏 徐州 221108 |
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| 基金项目： | 国家重点基础研究发展计划(973)资助项目，国家科技支撑计划资助项目，国家自然科学基金资助项目 |
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| 摘 要： | 针对底板穿层瓦斯抽采钻孔卸压不充分的主要问题，采用理论分析与现场试验相结合的方法，研究了钻孔割缝网络化卸压增透机制，提出了底板穿层钻孔割缝网络化增透技术，并且在国内相关矿井进行了现场应用。应用结果表明：采用该技术措施后，平均透气性系数提高了122倍，瓦斯抽采流量提高了3.5倍，瓦斯抽采浓度提高了2.3倍，预抽达标时间缩短50%以上。
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| 关 键 词： | 割缝 网络化 增透 底板穿层 瓦斯抽采 |
| 收稿时间： | 2012-04-16 |
Permeability-increasing mechanism of network slotting boreholes and application in crossing borehole gas drainage |
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| LIN Bai-quan,ZHANG Qi-zhi,SHEN Chun-ming,YANG Wei.Permeability-increasing mechanism of network slotting boreholes and application in crossing borehole gas drainage[J].Journal of China Coal Society,2012,37(9):1425-1430. |
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| Authors: | LIN Bai-quan ZHANG Qi-zhi SHEN Chun-ming YANG Wei |
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| Affiliation: | 1,2(1.State Key Laboratory of Coal Resources and Safe Mining,Xuzhou 221008,China;2.Faculty of Safety Engineering,China University of Mining & Technology,Xuzhou 221008,China) |
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| Abstract: | For the pressure relief inadequacy problem of bottom road boreholes，based on the method of combination of theoretical analysis and field tests，the permeability increasing mechanism of network slotting boreholes was studied，and the permeability increasing technology of network slotted boreholes crossing from floor was proposed.Filed test show that the technology can improve the extraction effect significantly，the permeability can be increased by 122 times in average，while the extraction flow increases 3.5 times and the gas concentration increases 2.3 times，and the standard time of gas pre pumping decreases more than 50%. |
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| Keywords: | slotting network permeability-increasing crossing from floor gas drainage |
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