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Title
Pore size imaging detection technology integrated with transient electromagnetic in mine abandoned roadway
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作者
邱浩李文张永超
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Author
QIU Hao, LI Wen, ZHANG Yongchao
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单位
煤炭科学技术研究院有限公司 安全分院煤炭资源高效开采与洁净利用国家重点实验室北京市煤矿安全工程技术研究中心
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Organization
1. Mine Safety Technology Branch, China Coal Research Institute, Beijing , China;2. State Key Lab of Coal Mining and Clean Utilization, Beijing , China;3. Beijing Mine Safety Engineering and Technology Research Center, Beijing , China
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摘要
针对常规矿井瞬变电磁探测技术存在明显的体积效应、纵向分辨率较低等问题,基于波场变换技术,结合合成孔径雷达测量,对井下瞬变电磁数据进行合成孔径成像进行数值计算,再对比分析常规数据处理方法与合成孔径成像数据处理结果。研究结果表明:工作面内部废弃巷道含水时,含水巷道对应位置区段测点波场曲线相关系数为0.4~0.8,相关性要强于其他位置区段,波场曲线相关性较强的测线区段同含水废弃巷道揭露位置对应较好,含水废弃巷道深度位置同合成孔径成像结果更为吻合。
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Abstract
According to the obvious volume effect, low longitudinal resolution and other problems existed in the conventional mine transient electromagnetic detection technology, based on the wave field transformation technology, in combination with measurement of the integrated pore size radar, the numerical simulation was conducted on the integrated pore size image with the mine transient electromagnetic data and a comparison was conducted on the conventional data processing method and the integrated pore size image data processing results. The study results showed that when the floor of the mine abandoned roadway was watery, the related coefficient of the wave filed curve at the measuring point of the relevant location section to the watery roadway was 0.4 ~ 0.8 and the relativity was stronger than other location section. The measuring section with a strong relativity of the wave field curve could be well to the exposed location of the watery abandoned roadway. The depth location of the watery abandoned roadway could be well fitted with the integrated pore size image results.
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关键词
瞬变电磁法合成孔径体积效应废弃巷道
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KeyWords
transient electromagnetic method; integrated pore size; volume effect; abandoned roadway
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