| 矿井采空区瞬变电磁法适用性研究 |
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| 引用本文： | 樊林林,陈健强,王克南,马志超. 矿井采空区瞬变电磁法适用性研究[J]. 山西煤炭, 2021, 0(1): 49-53 |
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| 作者姓名： | 樊林林 陈健强 王克南 马志超 |
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| 作者单位： | 山西晋煤集团技术研究院有限责任公司;煤炭科学技术研究院有限公司安全分院 |
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| 摘 要： | 矿井瞬变电磁法探测以异常体与围岩的电性差异为基础进行异常区探测.文章通过改变采空区规模、含水量、位置和形状等参数构建不同数值模型,采用有限元数值模拟方法分析不同采空区模型的反映特征.模拟结果显示:采空区与围岩电性差异越大,采空区感应特征越明显;采空区规模越大、含水量越多、距离探测位置越近,形状呈"块状"与探测线圈法线越...
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| 关 键 词： | 矿井瞬变电磁法 数值模拟 二次场 采空区 充水条件 |
Applicability of Transient Electromagnetic Method in Goaf |
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| FAN Linlin,CHEN Jianqiang,WANG Kenan,MA Zhichao. Applicability of Transient Electromagnetic Method in Goaf[J]. Shanxi Coal, 2021, 0(1): 49-53 |
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| Authors: | FAN Linlin CHEN Jianqiang WANG Kenan MA Zhichao |
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| Affiliation: | (Institute of Technology,Shanxi Jincheng Anthracite Mining Group,Jincheng 048006,China;Mine Safty Technology Branch,CCTEG China Coal Research Institute,Beijing 100013,China) |
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| Abstract: | Transient electromagnetic method could detect anomalous areas based on the electrical difference between the anomaly body and surrounding rock.In this paper,different goaf models,formed by changing various parameters,including scale,water content,location and shape,could be analyzed by finite element numerical simulation.The simulation results show that the larger the electrical difference between the goaf and the surrounding rock is,the more obvious the induction of the goaf;the larger the goaf is,the more water content,and the closer the detection location,the closer the“block”to the normal of detection coil,the more obvious the secondary field induction of the goaf,that is,the easier it is to distinguish the goaf from the surrounding rock. |
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| Keywords: | transient electromagnetic method numerical simulation induced secondary field goaf water-filled condition |
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