Data collecting way by high density electrical method

Abstract

The invention discloses a data collecting way by high density electrical method, comprising the following steps: A, an detecting depth is divided into a number of groups, and each group comprises a number of detecting layers; B, in the detecting of one group, the detecting electrode spacing is invariant, and a power supplying electrode spacing increases layer of layer in a certain mount by following the increasing of the detecting depth; C, after each layer of the first group is detected, the detecting electrode spacing increases in a certain step; D, detection is carried on from the last layer or the last two layers of the first group to each layer of a second group according to the detecting electrode spacing with increased step layer of layer, wherein, when detecting the last layer or the last two layers of the first group, the power supplying electrode spacing is the same with that when detecting the first group, and only the detecting electrode spacing is increased, but since the second group, by following the increasing of the detecting electrode spacing, the power supplying electrode spacing increases layer of layer in a certain mount until the detection of the second group is finished; E, the procedure C and the procedure D are repeated, and the detection is carried on a third group and other groups until all detections on each group are finished; F, the numerical value of the repeated detecting layer of each group is calculated. And high density electrical method data collecting way is applied to the foundation detection of constructional engineering.

Description

technical field [0001] The invention relates to a high-density electrical data collection method, which belongs to the technical field of electrical detection. Background technique [0002] With the rapid development of my country's economy, the requirements for infrastructure construction are getting higher and higher, and engineering geological survey is the preliminary work of engineering construction facilities. As a relatively non-destructive survey method, the high-density electrical method has the characteristics of short construction period, high efficiency and wide application range, so it is widely used in various pre-construction survey work. [0003] At present, the data acquisition methods of the high-density electrical method mainly use Wenner, α 2 , Slombel, dipole, three-pole and two-pole device methods, these methods have their advantages and disadvantages. [0004] (1) The electrode change indication of the Wenner method figure 1 . This method has the a...

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Problems solved by technology

[0006] Based on the above analysis, the current high-density electrical data acquisition method is in two extreme forms. Either the distance between the measuring electrodes MN increases continuously with the increase of the detection depth, which ensures a large detection depth, but cannot meet the requirements of high precision. Detection requirements; either the measurement electrode distance MN remains constant with the increase of detection depth, which can meet higher precision requirements, but cannot meet the requirements of deep detection

[0007] In short, judging from the existing high-density electrical data acquisition methods, none of them can meet the task requirements of deep detection and high-precision detection at the same time.

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