| 音频大地电磁法在矿山资源储量核实中的应用研究 |
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| 引用本文： | 董 旭,赵训林,高 远,申建平.音频大地电磁法在矿山资源储量核实中的应用研究[J].中州煤炭,2019,0(3):77-81. |
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| 作者姓名： | 董 旭 赵训林 高 远 申建平 |
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| 作者单位： | （湖南省煤炭地质勘查院，湖南 长沙 410014） |
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| 摘 要： | 南方石墨鲁塘矿区煤矿大多垮塌或被水淹没，井下测量难以达到资源储量核实的目的。为了解决该项难题，提出了采用音频大地电磁测深法探测采空区与保有区分布范围。介绍了音频大地电磁法探测的工作流程，首次提出了采空区综合指数这一概念并进行了说明，并对勘探成果及应用展望进行了相关说明。勘探结果表明，音频大地电磁测深法二维电阻率成像能够识别煤系地层及其上下围岩，分析煤层电阻率分布的二维连续性、成层性以及纵向梯度的变化，可定性解译煤层的采空、上下围岩的塌陷松动以及采空区的充填属性，从而为该区资源储量核实提供了有力支撑。
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| 关 键 词： | 音频大地电磁测深 资源储量核实 采空区 保有区 |
Research on application of audio magnetotelluric method in verification of mineral resource reserves |
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| Dong Xu,Zhao Xunlin,Gao Yuan,Shen Jianping. Research on application of audio magnetotelluric method in verification of mineral resource reserves[J].Zhongzhou Coal,2019,0(3):77-81. |
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| Authors: | Dong Xu Zhao Xunlin Gao Yuan Shen Jianping |
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| Affiliation: | （Coal Geological Exploration Institute of Hunan Province，Changsha 410014，China） |
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| Abstract: | The coal mines in Southern Graphite Lutang Coal Mine were mostly collapsed or submerged in water，and downhole measurements were difficult to achieve the purpose of verification of resource reserves.In order to solve this problem，an audio magnetotelluric sounding method was proposed to detect the distribution range of goaf and preserve area.The work flow of audio magnetotelluric detection was introduced.The concept of comprehensive index of goaf was proposed and explained for the first time.The exploration results and application prospects were explained.The results of the exploration showed that the audio magnetotelluric sounding method two dimensional resistivity imaging can identify coal-bearing strata and their surrounding rock formations，analyze the two dimensional continuity，stratification，and longitudinal gradient of resistivity distribution of the coal seam，and can qualitatively interpret the mining of the coal seam，the collapse of the surrounding rock，and the loosening of upper and lower surrounding rocks.As well as the filling properties of the goaf，it provided a strong support for the verification of resource reserves in the area. |
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| Keywords: | ,audio magnetotelluric sounding, resource reserves verification, goaf, retain area |
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