• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 21 Issue 5
Oct.  2008
Turn off MathJax
Article Contents
TAN Daiming, QI Taiyue. Sensitivity Analysis of Geoelectric Parameters in Transient Electromagnetic Method for Tunnels[J]. Journal of Southwest Jiaotong University, 2008, 21(5): 679-684.
Citation: TAN Daiming, QI Taiyue. Sensitivity Analysis of Geoelectric Parameters in Transient Electromagnetic Method for Tunnels[J]. Journal of Southwest Jiaotong University, 2008, 21(5): 679-684.

Sensitivity Analysis of Geoelectric Parameters in Transient Electromagnetic Method for Tunnels

  • Received Date: 30 Nov 2007
  • Publish Date: 25 Oct 2008
  • In order to investigate the characteristics of a transient electromagnetic field in tunnels using the transient electromagnetic method for advanced detection,the propagation characteristics of transient electromagnetic fields in an underground whole-space and in a layered half-space were respectively simulated using the ANSYS software.The sensitivity characteristics of transient electromagnetic fields were investigated by changing the depth,radius,resistivity of an anomalous body and the resistivity of surrounding rock,and the eigenfunctions of response curves for the field were obtained by fitting the data of time response spectrum.The numerical simulation results show that the propagation of the transient eddy current field in surrounding rock indicates a "water wave effect" in the whole-space other than a "smoking ring effect" in the half-space.The time-domain characteristics of the secondary field are greatly changed due to changing the geoelectric parameters of a conductive body,so the transient electromagnetic field in tunnels is sensitive to the geoelectric parameters of the conductive body.The time-domain characteristics of the secondary field are slightly changed duo to changing the geoelectric parameters of surrounding rock,so the transient electromagnetic field are lowly sensitive to the geoelectric parameters of surrounding rock.

     

  • loading
  • FRISCHKNECHT F C,RAAB P V.Time-domain electromagnetic soundings at the Nevada test site,Nevada[J].Geophysics,1984,49(7):981-992.[2] SASAKI Y.Full 3-D inversion of electromagnetic data on PC[J].Journal of Applied Geophysics,2001,46(1):45-54.[3] LIU G M,ASTEN M W.Fast approximate solutions of transient EM response to a target buried beneath a conductive overburden[J].Geophysics,1993,58(6):810-817.[4] SORENSEN K I,CHRISTENSEN N B.The fields from a finite electrical dipole-A new computational approach[J].Geophysics,1994,59(6):864-880.[5] PAVLOV D A,ZHDANOV M S.Analysis and interpretation of anomalous conductivity and magnetic permeability effects in time domain electromagnetic data[J].Journal of Applied Geophysics,2001,46(4):217-233.[6] 郭纯,刘白宙,白登海.地下全空间瞬变电磁技术在煤矿巷道掘进头的连续跟踪超前探测[J].地震地质,2006,28(3):456-462.GUO Chun,LIU Baizhou,BAI Denghai.Prediction of water disasters ahead of tunneling in coal mine using continuous detection by UWTEM[J].Seismology and Geology,2006,28(3):456-462.[7] 王胜辉.大型变压器场路耦合瞬态涡流场及螺旋线圈轴向电流效应研究[D].沈阳:沈阳工业大学电机系,1997.[8] GOLDMAN Y,HUBANSZ C,NICOLETIS S,et al.A finite-element solution for the transient electromagnetic response of an arbitrary two-dimensional resistivity distribution[J].Geophysics,1986,51(7):1451-1461.[9] 纳比吉安米萨克N.勘查地球物理电磁法[M].第1卷:理论.赵经祥,王艳君,译.北京:地质出版社:325-327.[10] NABIGHIAN M N.Quasi-static transient response of a conducting half-space-An approximate representation[J].Geophysics,1979,44(10):1700-1705.[11] 牛之链.时间域电磁法原理[M].长沙:中南工业大学出版社,1992:107-137.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Article views(1837) PDF downloads(249) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return