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Three-dimensional cross-hole electrical resistivity CT imaging method suitable for any hole distribution of urban environment

An urban environment, CT imaging technology, applied in image data processing, material analysis by electromagnetic means, instruments, etc., can solve the problem of limited number of drill holes, 3D resistivity cross-hole CT constraints, and irregular hole layout grids, etc. problems, to achieve the effect of reducing the impact, overcoming the limitation of hole layout, and expanding the scope of application

Inactive Publication Date: 2018-11-06
SHANDONG UNIV
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Problems solved by technology

However, due to the complex urban ground environment, dense buildings, and frequent human activities, the site conditions and construction conditions available for hole layout are limited. The number of drill holes that can be arranged in the situation is limited, and the grid of drill hole layout is often irregular
Therefore, the complex urban environment and limited space have brought huge constraints to the application of 3D resistivity transbore CT, and it is urgent to invent a scientific and reliable 3D resistivity transbore CT method and technology suitable for urban environments.

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  • Three-dimensional cross-hole electrical resistivity CT imaging method suitable for any hole distribution of urban environment
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  • Three-dimensional cross-hole electrical resistivity CT imaging method suitable for any hole distribution of urban environment

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[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0043] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses a three-dimensional cross-hole electrical resistivity CT imaging method suitable for any hole distribution of an urban environment. Geological analysis is conducted on a targetarea, and the rough range in which unfavorable geology such as karsts or underground cavities possibly exists in the target area is preliminarily inferred; according to site conditions, exploration holes, drilling measuring lines and ground surface measuring lines are arranged in a selected detection area, and the separation distances between drilling measuring line electrodes and ground surfaceelectrodes are determined; corresponding electrode laying modes selected according to hole distribution modes, and three-dimensional cross-hole electrical resistivity CT detection is performed; lattice dividing modeling of the detected area is completed by adopting automatic modeling, and an inversion imaging results of unfavorable geologic bodies of the target area are obtained through inversion.Modeling of irregular detection areas is achieved by utilizing an automatic modeling method.

Description

technical field [0001] The invention belongs to the field of resistivity exploration, and in particular relates to a three-dimensional cross-hole resistivity CT imaging method suitable for arbitrary hole layout in urban environment. Background technique [0002] With the continuous improvement of urbanization level and the rapid expansion of city scale, various contradictions between modern urban space and urban functions have become increasingly acute, which has restricted the sustainable development of cities to a certain extent. According to the experience of underground space development in large cities in my country, if the interaction and interaction between underground space development activities and geological environment are not fully considered, environmental geological problems or geological disasters will occur under certain conditions, which mainly include ground deformation or geological disasters caused by karst. Subsidence, inrush piping or sand liquefaction ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04G06T17/05G06T17/20
CPCG01N27/041G06T17/05G06T17/20
Inventor 林春金刘沈华刘征宇庞永昊范克睿王宁
Owner SHANDONG UNIV
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