高密度电阻率法二维勘探数据的三维反演及其在岩溶探测中的应用

doi:10.11720/wtyht.2019.1247

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Abstract

The two-dimensional high density electrical method can overcome the limitation of three-dimensional high density electrical method on topography and cost. The 3d high density electrical method can effectively solve the deficiency of two-dimensional high density electrical method in detecting space morphology. Therefore, Three-dimensional inversion of data obtained from two-dimensional exploration of high density electrical method has not only realized the three-dimensional visualization of underground space structure but also avoided the impact of topography and cost. Applying this method to the exploration of karst caves, using DUK-2A high density electrical system to collect data, and then convert the two-dimensional high density data into three dimensional inverse data, the results of the inversion can be obtained by any 3d dielectric section, by Slicer Dicer, in order to get rich information about the cave, finally, the interpretation of karst cave is made by combining the 3d dielectric section and borehole data, providing scientific basis for the smooth operation of the project, the feasibility and validity of this method are proved.

Key words： 2-dimensional high density electrical method 3-dimensional inversion section technology karst cave exploration

Received: 22 June 2018 Published: 31 May 2019

:	P631.1
	P319.3

Corresponding Authors: Gang ZHANG E-mail: zg@swust.edu.cn

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	Fan-Song MENG
	Gang ZHANG
	Meng-Jun CHEN
	Huai-Liang LI

Cite this article:

Fan-Song MENG,Gang ZHANG,Meng-Jun CHEN, et al. 3-D inversion of high density resistivity method based on 2-D high-density electrical prospecting data and its engineering application[J]. Geophysical and Geochemical Exploration, 2019, 43(3): 672-678.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2019.1247 OR https://www.wutanyuhuatan.com/EN/Y2019/V43/I3/672

The configuration of 2D high-density resistivity method

The configuration of 3D high-density resistivity method

Schematic diagram of 3D data acquisition mode of bipolar device

Reading in the data format of Res2dinv and Res3dinv

Indication of electrode arrangement for measuring wire

Topography of survey area and layout diagram of survey line

Data processing flow chart

Two-dimensional(a) and three-dimensional(b) inversion results of each line measured by high-density resistivity method

Three-dimensional geoelectric model

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