ISSN 1004-4140
CN 11-3017/P
WANG Jun-chao, SHI Xue-ming, WAN Fang-fang, XU Zi-dong. The Physical Experiment Research in Laboratory of Cross-hole Electric Resistivity Tomography for Detecting Boulders[J]. CT Theory and Applications, 2012, 21(4): 647-657.
Citation: WANG Jun-chao, SHI Xue-ming, WAN Fang-fang, XU Zi-dong. The Physical Experiment Research in Laboratory of Cross-hole Electric Resistivity Tomography for Detecting Boulders[J]. CT Theory and Applications, 2012, 21(4): 647-657.

The Physical Experiment Research in Laboratory of Cross-hole Electric Resistivity Tomography for Detecting Boulders

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  • Received Date: May 17, 2012
  • Available Online: December 12, 2022
  • Using the WDJD-3 multi-functional digital DC instrument produced by Chongqing Bunting Digital Control Technical Institute, we design the observing system of cross-hole resistivity tomography to detect boulders in the laboratory, and take series of physical simulation experiments. Many arrays(cross-hole pole-pole, pole-bipole and bipole-bipole) are used in physical simulation experiments. The collected data is inversed by RES2DINV software and we get the following conclusions:(1) imaging results of pole-pole can't reflect the position and size of high resistance body; (2) both imaging results of pole-dipole and dipole-dipole in standalone mode can clearly reflect the position and size of the high resistance body. The results of physical simulation experiments indicate that cross-hole resistivity tomography can be used to detect high-impedance body. The survey method is flexible acquisition, obtaining stable and reliable data, setting clear visual image maps. The result of physical simulation experiment has a positive significance in detecting boulders in the hole of subway tunnel with cross-hole resistivity tomography. Three-dimensional resistivity tomography experiment in detecting boulder is in further studying.
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