Application of 3 D High-density Electrical Method in Detection of Water-accumulated Gob
ZHANG Zhenyong
Abstract：In this paper,the finite-difference computation of the three-dimensional geo-electric field of the point source was discussed,and the apparent resistivity calculation expression of the tripolar device in multiple horizontal strata was derived. By taking three horizontal strata as the example,different types of curves were obtained according to the change of the thickness and the apparent resistivity of the strata. The inversion program which takes the smooth constrained least square method as the core was analyzed,the correctness and accuracy of the forward and inversion calculation of 3D high-density electrical method and the visualization of the 3D mapping were verified by examples. This method improved the detection ability of the distribution scope and water enrichment of the old gobs and provided technical means for the control of mine water inrush.
Keywords：3D high-density electrical methodfinite-difference methodsmooth constrained least square methodwater-accumulated gob
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 76-79 )