Fast polluted soil diagnostic method based on electrical resistance geophysical prospecting technology

A rapid diagnosis and resistivity technology, applied in the direction of material resistance, etc., can solve the problems of difficulty in guaranteeing the effect of pollution control and cost control, the inability to quickly identify the scope of pollution, and strong randomness of sampling points, etc., to achieve good technical advantages and applications Prospects, convenient implementation, and short cycle effects

Inactive Publication Date: 2015-12-23
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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Problems solved by technology

[0003] At present, site pollution investigations mainly rely on on-site sampling and laboratory testing and analysis methods. The test cycle is long, the sampling points are relatively random, and the cost is high. I

Method used

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  • Fast polluted soil diagnostic method based on electrical resistance geophysical prospecting technology
  • Fast polluted soil diagnostic method based on electrical resistance geophysical prospecting technology
  • Fast polluted soil diagnostic method based on electrical resistance geophysical prospecting technology

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Embodiment 1

[0022] Embodiment 1: This embodiment specifically relates to a method for rapid diagnosis of polluted soil based on resistivity geophysical prospecting technology. The rapid diagnosis method includes the following steps:

[0023] (1) When the physical field of the shallow stratum in the test area is relatively uniform (there are no interference factors such as thick layer of miscellaneous fill, pipelines, underground obstacles, etc.), the high-density electrical method is selected for the test area with a long plane size and a deep pollution depth. The shallow soil pollution range is tested for the resistivity of the contaminated soil to find out the abnormal distribution range of the geophysical prospecting data, so as to determine the key areas for further detection and realize the preliminary screening;

[0024] Among them, the high-density electrical method can realize the resistivity description of the two-dimensional formation section. There may be distortion;

[0025] ...

Embodiment 2

[0044] Embodiment 2: This embodiment specifically relates to a method for rapid diagnosis of contaminated soil based on resistivity geophysical prospecting technology. Taking a pesticide factory site as an example, the method for rapid diagnosis of contaminated soil at the pesticide factory site includes the following steps:

[0045] (1) The site of the pesticide factory includes the original pesticide production workshop and the original office area. After on-site investigation, it was found that the original pesticide production workshop has been leveled. Therefore, the high-density electrical method was used to conduct a large-scale test in the original pesticide production workshop. figure 1 As shown, a total of 5 test sections X1, X2, X3, X4, X5 are laid out;

[0046] (2) if figure 2 Shown is the test result diagram of the high-density electrical method test section X1, which can be seen from the figure:

[0047]a. The buried depth is shallower than 2m, due to factors s...

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Abstract

The invention discloses a fast polluted soil diagnostic method based on the electrical resistance geophysical prospecting technology. The method comprises the following steps that firstly, the electrical resistance of polluted soil in a testing area is tested through a high-density electrical method, a geophysical prospecting data abnormal distribution range is found out, and thus a key area for further detection is determined; secondly, in the key area, the electrical resistance of the polluted soil is tested through one or a combination of at least two of geophysical prospecting methods of electrical resistance static sounding, electrical resistance logging and electrical resistance CT; thirdly, the pollution degree of the key area is judged according to the change rate of the electrical resistance of the key area relative to the electrical resistance of a non-polluted area. The method has the advantages that site soil and water pollution can be quickly diagnosed based on the various electrical resistance geophysical prospecting testing methods including the high-density electrical method, the electrical resistance logging method, the electrical resistance static sounding method and the electrical resistance CT method and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental geotechnical engineering, and in particular relates to a method for quickly diagnosing polluted soil based on resistivity geophysical prospecting technology. Background technique [0002] With the rapid development of society and economy, the level of urbanization has been continuously improved, but the environmental pollution has become increasingly serious, seriously destroying the ecosystem and affecting the quality of life and health of human beings. In the process of redevelopment of contaminated sites, comprehensive and accurate site surveys are very important to prevent and control ecological accidents at construction sites and construction safety accidents caused by soil and groundwater pollution. [0003] At present, site pollution investigations mainly rely on on-site sampling and laboratory testing and analysis methods. The test period is long, the sampling points are relatively r...

Claims

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Application Information

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IPC IPC(8): G01N27/04
Inventor 许丽萍辛伟李韬王蓉胡绕沈超冯凯
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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