| 瞬变电磁法探测岩浆岩侵入煤层范围浅析 |
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| 引用本文： | 杨阳,温建亮,谢维,刘思琴.瞬变电磁法探测岩浆岩侵入煤层范围浅析[J].地质与勘探,2019,55(5):1261-1267. |
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| 作者姓名： | 杨阳 温建亮 谢维 刘思琴 |
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| 作者单位： | 山西省煤炭地质物探测绘院,山西晋中 030600;中南大学地球科学与信息物理学院,湖南长沙 410083;山西省煤炭地质物探测绘院,山西晋中,030600;中南大学地球科学与信息物理学院,湖南长沙,410083 |
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| 基金项目： | 山西省煤基重点科技攻关项目(编号：MQ2014-02)资助。 |
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| 摘 要： | 岩浆岩侵入煤层后，破坏了煤质，造成了煤炭资源的浪费，同时更给煤矿的安全生产带来隐患，探测岩浆岩侵入煤层范围具有重要意义。本文总结了岩浆岩侵入煤层后的电性特征，简要叙述了瞬变电磁法（TEM）的原理及特点，并以山西大同煤田同忻井田为例，介绍了瞬变电磁法探测岩浆岩侵入煤层范围的方法：岩浆岩侵入煤层后，引起二次场电位、视电阻率值这两个电性参数产生异常特征，根据这些异常特征可以有效探测岩浆岩侵入煤层范围。通过实例证明，利用瞬变电磁法探测岩浆岩侵入煤层的范围，是可行有效的。
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| 关 键 词： | 瞬变电磁法 岩浆岩 煤层 同忻井田 大同煤田 山西 |
| 收稿时间： | 2018/5/11 0:00:00 |
| 修稿时间： | 2019/8/2 0:00:00 |
Detecting areas of igneous rock intruding into coal seams using the TEM method |
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| Yang Yang.Detecting areas of igneous rock intruding into coal seams using the TEM method[J].Geology and Prospecting,2019,55(5):1261-1267. |
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| Authors: | Yang Yang |
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| Institution: | Shanxi Coal Geological Geophysical Exploration Surveying and Mapping Institute, Jinzhon, Shanxi; School of Geosciences and Info-Physics, Central South University, Changsha, Hunan |
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| Abstract: | The intrusion of igneous rocks into coal seams can not only affect the coal quality, but also bring hidden danger to the safety in production of coal mines. This paper sums up the electrical characteristics of magmatic rocks intruding into coal seams, and briefly describes the principle and characteristics of the transient electromagnetic method (TEM). Taking the Tongxin field in Datong Coal Field of Shanxi as an example, this paper presents the principle of detecting the intrusion area of the magmatic rocks by TEM as follows. After intrusion of magmatic rock, anomalies of secondary-field potential and apparent resistivity can be produced. The characteristics of these anomalies permit to detect the area of rock intrusion. The example proves that it is feasible and effective to attain this end by the TEM method. |
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| Keywords: | TEM igneous rocks Datong coalfield Shanxi |
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