A method and device for advanced water detection by induced polarization in the frequency domain of tunnel face emission
A technology to stimulate polarization and face, applied in the direction of measuring devices, electric/magnetic exploration, using re-radiation, etc., can solve the problem of lack of observation methods in tunnels, improve the ability to obtain effective information, improve measurement accuracy, and save energy. the effect of time
Active Publication Date: 2022-08-09
SHANDONG UNIV +1
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[0005] However, as far as the inventors know, with the increase of tunnel excavation, the demand for longer-distance detection is also increasing. Frequency-domain induced polarization has advantages for long-distance detection, but there is a lack of suitable observation methods for applications in tunnels.
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[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0034] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the invention. Unless otherwise defined, 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.
[0035] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and / or com...
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The invention provides a method and system for advanced water exploration in the frequency domain excited by the emission from the tunnel face. The geological analysis of the area to be detected is carried out, combined with the excavation conditions in the early stage of the tunnel, existing geological data and field data, to delineate possible existing The approximate range of the water body that caused the disaster is convenient for subsequent detection; the frequency domain excited polarization three-dimensional coordinate system is established, the galvanic source is arranged on the face, and the receiving electrode points are arranged behind the face; The high-frequency alternating current is collected at fixed time intervals, and all receiving electrodes are collected once to obtain the apparent resistivity; according to the collected apparent resistivity data, the three-dimensional image is inverted to determine the location and three-dimensional shape of the water body that caused the disaster; The invention can reflect the three-dimensional shape and boundary of the hazard-causing water body, significantly increase the distance of advance water exploration, and improve the accuracy and reliability of advance forecast.
Description
technical field [0001] The invention belongs to the technical field of induced polarization, and in particular relates to a method and a device for advanced water exploration by induced polarization in the frequency domain emitted by a tunnel face. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] my country's tunnel construction shows a momentum of rapid development. At present, my country has become the country with the largest number of tunnel construction, the largest scale and the most difficult in the world. However, due to the concealment of the water-bearing structure in front of the tunnel face, it is difficult to comprehensively check the unfavorable geological conditions along the line in the early stage of construction, which often leads to major disasters such as water inrush and mud inrush during the construction process, which...
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IPC IPC(8): G01V3/00
CPCG01V3/00Y02A90/30
Inventor 聂利超董昭刘征宇马钊张若祥邓朝阳肖晴侠孙翔宋志成
Owner SHANDONG UNIV