Multi-dimensional detection apparatus and method of exploring riverway karst cave

A river channel and multi-dimensional technology, applied in surveying devices, geophysical surveys, electrical/magnetic exploration, etc., can solve problems such as difficult deployment of observation systems, few applications, and small data volumes

Pending Publication Date: 2017-08-15
ZHEJIANG INST OF HYDRAULICS & ESTUARY +1
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Problems solved by technology

The three-dimensional high-density electrical method has made great progress in the application of engineering exploration. The three-dimensional resistivity image can be obtained through tomography technology. However, the high-density electrical method still adopts the serial acquisition mode, which has high acquisition efficiency and a small amount of data, which is not conducive to river channels. Long route detection, and less application

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  • Multi-dimensional detection apparatus and method of exploring riverway karst cave
  • Multi-dimensional detection apparatus and method of exploring riverway karst cave
  • Multi-dimensional detection apparatus and method of exploring riverway karst cave

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Embodiment Construction

[0067] 1 Parallel electrical testing principle and imaging technology

[0068] 1.1 Parallel electrical technology

[0069] The high-density electrical method is based on the geophysical premise of the difference in resistivity between rock and soil media, and uses special instruments to record only the geoelectric data formed by the combination of the corresponding current electrodes and voltage channels in sequence, while the rest of the line The electrode is in an idle state, and the results show the distribution information of karst bodies in the form of resistivity chromatograms. The parallel electrical method absorbs the idea of ​​data acquisition in seismic exploration, improves the shortcomings of the traditional high-density electrical method that is limited to serial acquisition by sub-device, realizes the new concept of parallel, high-efficiency, and instantaneous acquisition of big data, and exerts the object-oriented comprehensive Advantages of simultaneous acquis...

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Abstract

The invention, which belongs to the evaluation field of geological disasters of water conservancy projects, especially relates to a measurement arrangement system for exploring a riverway karst cave and implementation method thereof, particularly to a multi-dimensional detection method for diagnosing a karst body hidden in a riverway by using a parallel electrical method. The multi-dimensional arrangement apparatus for exploring riverway karst body distribution comprises a test system and a test instrument. The test system consists of two multi-core cable lines arranged at two river embankments in parallel, infinity B electrodes corresponding to the single multi-core cable line, and potential reference N electrodes. 64 electrodes are arranged at each multi-core cable line; and each electrode channel is connected with the ground by a copper rod. The test instrument is a parallel electric method instrument. According to the multi-dimensional detection apparatus and method of exploring a riverway karst cave, because of utilization of the parallel electric method detection technology, the work efficiency of the conventional resistivity method is improved; with an interpreting technique based on combination of a two-dimensional apparent resistivity image and three-dimensional inversion imaging, the karst cave exploration precision is improved and defects in the prior art are overcome.

Description

technical field [0001] The invention belongs to the field of water conservancy engineering geological hazard evaluation, in particular to a measurement arrangement system and an implementation method for detecting river channel karst caves, in particular to a multi-dimensional detection method for diagnosing hidden karst bodies in a channel by using a parallel electrical method. Background technique [0002] The development and distribution of karst in my country is relatively extensive, which creates a strange natural scene, but also brings a series of geological disasters to the safe implementation of the project, especially when the groundwater level rises and falls and human pumping and drainage of groundwater jointly lead to the subsidence of hidden karst areas on the ground . Therefore, it is necessary to clarify the distribution characteristics of unfavorable karst bodies in river channel engineering treatment in karst areas, so as to reduce the risk of engineering dis...

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Application Information

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IPC IPC(8): G01V3/02G01V3/08G01V3/38
CPCG01V3/02G01V3/088G01V3/38Y02A90/30
Inventor 谭磊江晓益许小杰李红文来晟陈星史燕南岑洋余斐褚高强熊志福
Owner ZHEJIANG INST OF HYDRAULICS & ESTUARY
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