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Channel improvement dam body internal erosion detection, monitoring and early warning method based on three-dimensional tomography

A three-dimensional tomography and dam body technology, which is applied to the analysis of materials, measurement devices, permeability/surface area analysis, etc., can solve the problems of structures being buried by sand and water, and achieve reliable detection and save computing resources.

Pending Publication Date: 2020-09-29
CHONGQING JIAOTONG UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, since these damages often occur inside the dam body of the channel improvement building, and part of the structure of the channel improvement building is buried by sand or submerged in water, it is difficult to use direct observation or surface detection to understand the erosion inside the channel improvement dam body. a burning problem

Method used

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  • Channel improvement dam body internal erosion detection, monitoring and early warning method based on three-dimensional tomography
  • Channel improvement dam body internal erosion detection, monitoring and early warning method based on three-dimensional tomography
  • Channel improvement dam body internal erosion detection, monitoring and early warning method based on three-dimensional tomography

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Embodiment 1

[0048]This embodiment discloses a method for detection, monitoring and early warning of erosion inside a waterway regulation dam body based on three-dimensional tomography, see figure 1 , is the flow chart of this method, specifically comprises the following steps:

[0049] 1) Select the detection area on the surface of the waterway regulation dam body and the nearby area, and drill some potential exploration wells in the detection area, and some potential exploration wells are distributed in a network; where, see figure 2 , some of the potential exploration wells include vertical wells and inclined wells, the depth of the vertical wells and inclined wells all run through the foundation of the waterway regulation dam body; the diameter of the potential exploration wells is 20-75mm, to reduce the impact on the dam body structure Influence; the soil samples of different depths are collected in the process of drilling the potential exploration well, and the porosity, resistivity...

Embodiment 2

[0078] The waterway improvement dam selected in this embodiment is an inland waterway Xiatiaoding dam, the crest width of the dam is 3m, the top length is 10m, the slope ratio of the front and back water surfaces is 1:1.5, and the dam height is 5m. The slope ratio of the dam root is 1:2.5. The surface of the dam body and the surrounding areas are classified as the area to be detected, and the vertical spacing of the dam crest is 2m, and the horizontal spacing of 1m is arranged to detect the well pattern, and the dam crest is surrounded by double rows of wells with a spacing of 50mm, such as figure 2 shown. Among them, the middle area is set as a vertical well, and the edge is set as a 45° inclined well based on the slope ratio, with a diameter of 50mm and a well depth of 0.5m beyond the dam foundation. The vertical well spacing is 0.5m and the inclined well spacing is 0.25m. Potential detection electrodes are buried and regrouting deal with.

[0079] Through a series of dis...

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Abstract

The invention discloses a channel improvement dam body internal erosion detection, monitoring and early warning method based on three-dimensional tomography. The method comprises the steps of arranging a mesh potential detection well, connecting and arranging a measuring device, measuring the natural potential of an area to be detected, measuring the voltage and current of a detection electrode, measuring potential response, inverting a three-dimensional heterogeneous structure of the detection area, detecting and feeding back in real time and the like. According to the method, efficient heterogeneous structure resistivity chromatography scanning can be carried out by utilizing resistivity change data measured by the electrode holes, potential risk early warning of the dam body is providedby feeding back the internal erosion condition of the channel improvement dam body in real time, and the method is applied to maintenance and management of inland waterway improvement buildings.

Description

technical field [0001] The invention relates to the field of hidden danger exploration of waterway regulation buildings, in particular to a three-dimensional tomographic imaging-based method for detecting, monitoring and early warning of erosion inside a waterway regulation dam body. Background technique [0002] Due to the advantages of low energy consumption, low pollution and low cost, inland waterway transportation has received great attention from the state and has developed rapidly. Among them, dam-type waterway improvement structures, such as spur dams and shun dams, are facilities to ensure the safety and smoothness of inland waterways. It plays an irreplaceable important role, and a large amount of funds are invested in its construction every year. However, under the special terrain and geological conditions in mountainous areas, the characteristics of mountainous rivers, such as high flow velocity and turbulent flow state, make the dam body of waterway improvement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N27/04G01N5/00G01N15/08
CPCG01N5/00G01N15/08G01N15/088G01N27/041G01N27/62
Inventor 梁越叶天齐李林俐杨胜发刘明维王平义刘楠楠
Owner CHONGQING JIAOTONG UNIVERSITY
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