Fine exploration method for water-rich karst in complex urban environment

An urban environment and karst technology, applied in the field of underground karst detection, can solve problems such as large buried depth, high groundwater level, and failure to obtain ideal exploration results, so as to improve recognition ability and accuracy, reliable detection results, and avoid shallow layers Effects of Surface Disturbance

Pending Publication Date: 2022-01-21
SHANDONG UNIV
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Problems solved by technology

[0004] The inventors found that in a complex urban environment, the actual detection effect of geophysical methods will be greatly limited
Due to the interference of stray currents, vehicle vibrations and underground metal pipelines on the urban surface, conventional surface geophysical methods, such as high-density electrical methods, ground-penetrating radar, transient electrom

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  • Fine exploration method for water-rich karst in complex urban environment
  • Fine exploration method for water-rich karst in complex urban environment
  • Fine exploration method for water-rich karst in complex urban environment

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[0040] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. 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 invention belongs.

[0041] In this application scheme, the geophysical prerequisites for realizing fine exploration of water-rich karst in a complex urban environment are:

[0042] In the karst development area, there are usually caves of different sizes, which are usually filled with plastic silty clay or breccia debris. According to the filling type, it can be divided into fully-filled caves, half-filled caves and non-filled caves (empty caves). There are obvious differences in physical properties between various types of caves and normal rock and soil bodies, and also have obvious medium distribution. interface.

[0043] For water-rich karst development areas,...

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Abstract

The invention discloses a complex urban environment water-rich karst fine exploration method, which belongs to the technical field of underground karst exploration. The method comprises the following steps of carrying out exploration drilling in a detection area, and building a detection profile; for the same detection section, a cross-hole resistivity CT method and a cross-hole elastic wave CT method being adopted for detection in sequence; determining the spatial distribution and position of karst fissures by a cross-hole resistivity CT method, and delineating the range and boundary information of anomalous bodies by a cross-hole elastic wave CT method; and repeating steps till all detection sections are detected.

Description

technical field [0001] The invention belongs to the technical field of underground karst detection, and in particular relates to a fine detection method for water-rich karst in a complex urban environment. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] At present, the geological conditions encountered in the construction process of major infrastructure projects such as water conservancy and hydropower projects, rail transit projects, and underground projects are more complicated. For example, in the construction process of urban underground transportation projects, they often pass through water-rich karst development areas with poor self-stabilization ability and low surrounding rock strength. and other large-scale geological disasters. Since the groundwater environment is a whole with a strong correlation between the underground and the surface...

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Application Information

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IPC IPC(8): G01V11/00
CPCG01V11/00Y02A90/30
Inventor 孙怀凤刘锐许伟强姜晓腾朱裕振杨洋
Owner SHANDONG UNIV
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