江宁台多孔垂向地电阻率观测试验

doi:10.12196/j.issn.1000-3274.2020.04.011

Abstract

Abstract: In order to improve the ability of geo-electrical resistivity observation to restrain subway interference, the porous vertical geo-electrical resistivity observation has been newly built in Jiangning station. In the process of observation, the calculation method of device coefficient is improved and the problem of missing number is solved. By comparing the observation data of deep-well and vertical geo-electrical resistivity observation data, we come to the conclusions that: ① The annual variation amplitude of vertical observation is larger than that of underground earth resistivity observation with the same polar distance because of the special polar arrangement; ② The signal-to-noise ratio of vertical geo-electrical resistivity observation is higher than that of deep-well geo-electrical resistivity, it has better anti-interference ability of metro, so as to provide the basis for the anti-interference methods and technology application of geo-electrical resistivity observation; ③ In the construction of vertical geo-electrical resistivity observation, it may be necessary to pay attention to the fixed position of electrode.

Key words: Geo-electrical resistivity, Porous vertical observation, Deep-well observation, Subway interference

CLC Number:

P315.7

FAN Xiao-chun, SHEN Hong-hui, LI Wei, XIA Zhong, WU Fan, YUAN Shen-jie. Experiment of the Porous Vertical Geo-resistivity Observation at Jiangning Station[J]. EARTHQUAKE, 2020, 40(4): 144-155.

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Experiment of the Porous Vertical Geo-resistivity Observation at Jiangning Station

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