必须声明标量变量 "@Script_ID"。 瞬变电磁法探测薄层的分辨能力与偏移距关系-《地球科学与环境学报》
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[1]雷康信,薛国强*,陈卫营,等.瞬变电磁法探测薄层的分辨能力与偏移距关系[J].地球科学与环境学报,2020,42(06):731-736.[doi:10.19814/j.jese.2020.07044]
 LEI Kang-xin,XUE Guo-qiang*,CHEN Wei-ying,et al.Relationship Between the Detection Capability and Offset of Transient Electromagnetic Method for Thin Layers[J].Journal of Earth Sciences and Environment,2020,42(06):731-736.[doi:10.19814/j.jese.2020.07044]
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第42卷
期数:
2020年第06期
页码:
731-736
栏目:
电磁法勘探专辑
出版日期:
2020-11-15

文章信息/Info

Title:
Relationship Between the Detection Capability and Offset of Transient Electromagnetic Method for Thin Layers
文章编号:
1672-6561(2020)06-0731-06
作者:
雷康信123薛国强1234*陈卫营123周楠楠123
1. 中国科学院地质与地球物理研究所 中国科学院矿产资源研究重点实验室,北京 100029; 2. 中国科学院大学 地球与行星科学学院,北京 100049; 3. 中国科学院地球科学研究院,北京 100029; 4. 长安大学 地球物理场多参数综合模拟实验室(中国地球物理学会重点实验室),陕西 西安 710054
Author(s):
LEI Kang-xin123 XUE Guo-qiang1234* CHEN Wei-ying123 ZHOU Nan-nan123
1. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; 3. Innovation Academy of Earth Science, Chinese Academy of Sciences, Beijing 100029, China; 4. Integrated Geophysical Simulation Lab(Key Laboratory of Chinese Geophysical Society), Chang'an University, Xi'an 710054, Shaanxi, China
关键词:
瞬变电磁法 电性源 薄层探测 正演模拟 分辨能力 最大相对异常 偏移距 观测时间
Keywords:
transient electromagnetic method grounded-wire source thin layer detection forward modeling detection capability the biggest relative anomaly offset observation time
分类号:
P631
DOI:
10.19814/j.jese.2020.07044
文献标志码:
A
摘要:
薄层探测问题一直是地球物理勘探关注的重点,以往的研究大多关注的是不同地球物理方法对薄层的探测效果,却没有关注观测参数对探测结果的影响。拟选用电性源瞬变电磁法,以一维正演理论为基础,通过定义相对异常表征分辨能力,研究偏移距、观测时间与分辨能力之间的关系,从而决定如何选择合适的观测参数以实现薄层异常的快速有效勘探。结果表明:瞬变电磁法对薄层的分辨能力随着偏移距的增大先呈线性递减后逐步趋于稳定,同时所需的观测时间也逐渐增大; 分辨能力的衰减速率随着电阻率及埋藏深度的增大逐渐减弱。综上所述,采用较小的偏移距进行数据采集,不仅有利于提高勘探精度,也能相应地提升勘探效率。
Abstract:
The detection of thin layers has always been paid a lot of attention in geophysical prospecting, but previous researches mainly focus on the detection results of different geophysical methods while ignoring the influence of the observation parameters. The grounded-wire transient electromagnetic method(TEM)was chosen to the thin layer detection, and the relationship between offset, observation time and detection capability was analyzed based on the 1D forward modeling and the defined relative anomaly, which was used to reflect the detection capability of the TEM for thin layers. Hence, the way on how to choose proper observation parameters for fast and fine detection of thin layers was given. The results show that detection capability of transient electromagnetic method for thin layers becomes decreased linearly and then gradually tends to be stable with the increase of the offset, at the same time, the demanded observation time becomes longer, which is bad for actual field measurement. Besides, the decrease speed of detection capability becomes slower with the increasing of resistivity or buried depth. Therefore, it is concluded that adopting short offset in data collecting not only can improve the detection accuracy, but also can improve the detection efficiency.

参考文献/References:

[1] 薛国强,邓 湘.瞬变电磁法对薄层的探测能力[J].石油地球物理勘探,2007,42(6):709-713. XUE Guo-qiang,DENG Xiang.Capability of Transient Electromagnetic(TEM)Method for Detecting Thin Layer[J].Oil Geophysical Prospecting,2007,42(6):709-713.
[2] 陈卫营,薛国强.电性源瞬变电磁对薄层的探测能力[J].物探与化探,2015,39(4):775-779. CHEN Wei-ying,XUE Guo-qiang.Detection Capability of Grounded Electric Source TEM for Thin Layer[J].Geophysical and Geochemical Exploration,2015,39(4):775-779.
[3] 牛之琏.时间域电磁法原理[M].长沙:中南大学出版社,2007. NIU Zhi-lian.Principle of Time Domain Electromagnetic Method[M].Changsha:Central South University Press,2007.
[4] 薛国强,陈卫营,周楠楠,等.接地源瞬变电磁短偏移深部探测技术[J].地球物理学报,2013,56(1):255-261. XUE Guo-qiang,CHEN Wei-ying,ZHOU Nan-nan,et al.Short-offset TEM Technique with a Grounded Wire Source for Deep Sounding[J].Chinese Journal of Geophysics,2013,56(1):255-261.
[5] ZHOU Nan-nan,XUE Guo-qiang,HOU Dong-yang,et al.An Investigation of the Effect of Source Geometry on Grounded-wire TEM Surveying with Horizontal Electric Field[J].Journal of Environmental and Engineering Geophysics,2018,23(1):143-151.
[6] STRACK K M,HANSTEIN T,LEBROCQ K,et al.Case Histories of LOTEM Surveys in Hydrocarbon Prospective Area[J].First Break,1989,7(12):467-477.
[7] NEWMAN G A.Deep Transient Electromagnetic Soundings with a Grounded Source over Near-surface Conductors[J].Geophysical Journal International,1989,98(3):587-601.
[8] STRACK K M.Exploration with Deep Transient Electromagnetic Method[M].Amsterdan:Elsevier,1992.
[9] HORDT A,DAUTEL S,TEZKAN B,et al.Interpretation of Long-offset Transient Electromagnetic Data from the Odenwald Area,Germany,Using Two-dimensional Modelling[J].Geophysical Journal International,2000,140(3):577-586.
[10] XUE G Q,BAI C Y,LI X.Extracting the Virtual Reflection Wavelet from TEM Data Based on Regularizing Method[J].Pure and Applied Geophysics,2012,169(7):1269-1282.
[11] XUE G Q,GELIUS L J,SAKYI P A,et al.Discovery of a Hidden BIF Deposit in Anhui Province,China by Integrated Geological and Geophysical Investigations[J].Ore Geology Reviews,2014,63:470-477.
[12] 牛之琏.瞬变电磁测深法对导电层的探测能力[J].地质与勘探,1992,28(7):37-40. NIU Zhi-lian.Detectability of an Intermediate Conductive Layers by Transient Electromagnetic Sounding[J].Geology and Prospecting,1992,28(7):37-40.
[13] 牛之琏.瞬变电磁测深法对导电层的探测能力[J].地质与勘探,1992,28(1):42-47. NIU Zhi-lian.The Detectability of Intermediate Conductive Layers by Transient Electromagnetic Sounding[J].Geology and Prospecting,1992,28(1):42-47.
[14] 唐新功,胡文宝,严良俊.层状地层中三维薄板的瞬变电磁响应[J].石油地球物理勘探,2000,35(5):628-633,650. TANG Xin-gong,HU Wen-bao,YAN Liang-jun.Transient Electromagnetic Response to a 3-D Thin Plate in a Layered Earth[J].Oil Geophysical Prospecting,2000,35(5):628-633,650.
[15] 唐新功,胡文宝,严良俊.瞬变电磁法对地下不同位置多个三维薄板探测能力的研究[J].物探与化探,2004,28(6):528-531. TANG Xin-gong,HU Wen-bao,YAN Liang-jun.Study of the Detectability to Multiple Three-dimensional Thin Bodies with Different Locations by TEM Method[J].Geophysical and Geochemical Exploration,2004,28(6):528-531.
[16] 王战军,朱自强,李建慧,等.瞬变电磁法对低阻薄层的分辨能力研究[J].物探化探计算技术,2012,34(6):646-651. WANG Zhan-jun,ZHU Zi-qiang,LI Jian-hui,et al.Study on Resolution Capability of TEM for Low Resistivity Thin Layer[J].Computing Techniques for Geophysical and Geochemical Exploration,2012,34(6):646-651.
[17] 周楠楠,薛国强,李 海.回线源瞬变电磁水平分量对薄层的分辨能力[J].地球物理学进展,2014,29(5):2347-2355. ZHOU Nan-nan,XUE Guo-qiang,LI Hai.Distinguish-ing Ability to Thin Layer of Loop-source TEM Horizontal Components[J].Progress in Geophysics,2014,29(5):2347-2355.
[18] 侯东洋,薛国强,陈卫营.SOTEM与CSAMT 对低阻层的分辨能力比较[J].物探与化探,2016,40(1):185-189. HOU Dong-yang,XUE Guo-qiang,CHEN Wei-ying.Distinguishing Capability of SOTEM and CSAMT for Low Resistivity Layer[J].Geophysical and Geochemical Exploration,2016,40(1):185-189.
[19] 龙 霞,席振铢,周 胜,等.等值反磁通原理瞬变电磁法探测薄层能力[J].地球物理学进展,2020,35(2):753-759. LONG Xia,XI Zhen-zhu,ZHOU Sheng,et al.Detection Capability of Opposing Coils Transient Electromagnetic Method for Thin layers[J].Progress in Geophysics,2020,35(2):753-759.
[20] 薛国强,李 貅,底青云.瞬变电磁法正反演问题研究进展[J].地球物理学进展,2008,23(4):1165-1172. XUE Guo-qiang,LI Xiu,DI Qing-yun.Research Progress in TEM Forward Modeling and Inversion Calculation[J].Progress in Geophysics,2008,23(4):1165-1172.
[21] 陈卫营,李 海,薛国强,等.SOTEM数据一维OCCAM反演及其应用于三维模型的效果[J].地球物理学报,2017,60(9):3667-3676. CHEN Wei-ying,LI Hai,XUE Guo-qiang,et al.1D OCCAM Inversion of SOTEM Data and Its Application to 3D Models[J].Chinese Journal of Geophysics,2017,60(9):3667-3676.
[22] 薛国强,陈卫营,武 欣,等.电性源短偏移距瞬变电磁研究进展[J].中国矿业大学学报,2020,49(2):215-226. XUE Guo-qiang,CHEN Wei-ying,WU Xin,et al.Review on Research of Short-offset Transient Electromagnetic Method[J].Journal of China University of Mining and Technology,2020,49(2):215-226.
[23] NABIGHIAN M N.Electromagnetic Methods in Applied Geophysics,Volume 1:Theory[M].Tusla:Society of Exploration Geophysicists,1988.
[24] NABIGHIAN M N,MACNAE J C.Time Domain Electromagnetic Prospecting Methods[R]∥NABIGHIAN M N.Electromagnetic Methods in Applied Geophysics:Volume 2,Application,Parts A and B.Tulsa:Society of Exploration Geophysics,1991:427-520.
[25] 牛之琏.时间域电磁法原理[M].长沙:中南工业大学出版社,1992. NIU Zhi-lian.Principle of Time Domain Electromagnetic Method[M].Changsha:Central South University of Technology Press,1992.
[26] 陈卫营,薛国强,崔江伟,等.SOTEM响应特性分析与最佳观测区域研究[J].地球物理学报,2016,59(2):739-748. CHEN Wei-ying,XUE Guo-qiang,CUI Jiang-wei,et al.Study on the Response and Optimal Observation Area for SOTEM[J].Chinese Journal of Geophysics,2016,59(2):739-748.

相似文献/References:

[1]薛国强,闫述,底青云,等.多道瞬变电磁法(MTEM)技术分析[J].地球科学与环境学报,2015,37(01):94.
 XUE Guo-qiang,YAN Shu,DI Qing-yun,et al.Technical Analysis of Multi-transient Electromagnetic Method[J].Journal of Earth Sciences and Environment,2015,37(06):94.
[2]常江浩,薛国强*.电性源短偏移距瞬变电磁场扩散规律三维数值模拟[J].地球科学与环境学报,2020,42(06):711.[doi:10.19814/j.jese.2020.07048]
 CHANG Jiang-hao,XUE Guo-qiang*.Three-dimensional Numerical Simulation of Diffusion Law of Short-offsetGrounded-wire Transient Electromagnetic Field[J].Journal of Earth Sciences and Environment,2020,42(06):711.[doi:10.19814/j.jese.2020.07048]
[3]薛国强,常江浩*,雷康信,等.瞬变电磁法三维模拟计算研究进展[J].地球科学与环境学报,2021,43(03):559.[doi:10.19814/j.jese.2020.11029]
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[4]陈卫营,薛国强.电性源短偏移距瞬变电磁法数据处理软件系统SOTEMsoft[J].地球科学与环境学报,2021,43(06):1050.[doi:10.19814/j.jese.2021.07003]
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备注/Memo

备注/Memo:
收稿日期:2020-07-29; 修回日期:2020-10-11; 网络首发日期:2020-11-10投稿网址:http:∥jese.chd.edu.cn/
基金项目:中国科学院科研仪器设备研制项目(YJKYYQ20190004); 自然资源部煤炭资源勘查与综合利用重点实验室开放项目(KF2020-3); 国家自然科学基金项目(41704076)
作者简介:雷康信(1996-),男,山西平遥人,中国科学院大学理学博士研究生,E-mail:lkx18@mail.iggcas.ac.cn。
*通讯作者:薛国强(1966-),男,山西运城人,中国科学院地质与地球物理研究所研究员,博士研究生导师,理学博士, E-mail:ppxueguoqiang@163.com。
更新日期/Last Update: 2020-12-20