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A Method for Dividing Concavity and Convexity of Bank Slopes for Analyzing Water Erosion

A technology of erosion and flowing water, applied in the analysis of materials, strength characteristics, instruments, etc., can solve problems such as difficulty in quantifying the stability of bank slopes, and no better methods have been found.

Active Publication Date: 2021-06-08
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to define concave and convex bank slopes with quantitative methods, and how to divide the degree of concave and convex bank slopes, etc., have not yet seen a good method, so it is difficult to achieve quantitative research on bank slope stability.

Method used

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  • A Method for Dividing Concavity and Convexity of Bank Slopes for Analyzing Water Erosion
  • A Method for Dividing Concavity and Convexity of Bank Slopes for Analyzing Water Erosion
  • A Method for Dividing Concavity and Convexity of Bank Slopes for Analyzing Water Erosion

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Embodiment

[0041] Example: see figure 1 , a method for dividing the concave-convex degree of a bank slope for analyzing the erosion of running water, including the following steps:

[0042] Step 1, obtaining raw data includes: digital elevation model and high-definition remote sensing images of the research area;

[0043] Step 2: In the ArcGIS software, the hydrological analysis function is used to process the research area (depression filling, flow direction extraction, flow extraction and river network connection, to obtain the forward catchment basin and reverse catchment basin, and carry out vectorization processing; After the vectors are merged), the natural slope unit of the trial division is obtained;

[0044] Step 3: Compare the slope units to be divided with the high-definition remote sensing images until the matching degree between the slope units and the high-definition remote sensing images meets the requirements;

[0045] Step 4: Arbitrarily adjacent to two natural slope u...

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Abstract

The invention discloses a method for dividing the concavo-convex degree of bank slopes for analyzing the erosion effect of running water, which is characterized in that, in the GIS software, the hydrological analysis function is used to process the research area to obtain the natural slope unit for trial division; and the research Compare the high-definition remote sensing images of the region until the matching degree meets the requirements, and obtain the angle between the connecting line segment of the intersection point between any two natural slope boundaries and the river bank. According to the degree of concavity and convexity, the degree of water erosion on the bank slope can be determined, so as to quickly and qualitatively determine the erosion of the river bank / reservoir bank slope.

Description

technical field [0001] The invention relates to the research field of evaluating the degree of erosion of bank slopes by surface flowing water; in particular, it relates to a method for dividing the concave-convex degree of bank slopes for analyzing the erosion of flowing water. Background technique [0002] my country has abundant water power resources, and there are many rivers and reservoirs, which provide endogenous power for my country's economic construction, national defense, and ecological construction. However, the erosion of river banks and reservoir banks by natural water flow reduces the stability of bank slopes and produces landslides. , bank collapse and other geological disasters, causing casualties, economic property losses, construction site instability, and ecological environment degradation; in order to prevent disasters, it is necessary to grasp the degree of impact of water flow on bank slope erosion and carry out corresponding bank slope stability measure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/56
CPCG01N3/567G01N2203/0647
Inventor 文海家薛靖元黄健豪谢朋张岩岩薛蒙蒙
Owner CHONGQING UNIV