Modeling method of plane morphology of different evolution modes of meandering river point dam

Abstract

The invention belongs to the technical field of engineering geology, and particularly relates to a modeling method of plane morphology of different evolution modes of a meandering river point dam. The method comprises the following steps: A, determining the plane position coordinates of key lateral lamination interfaces inside the meandering river point dam on the basis of an input UTM/self-defined coordinate system; B, smoothing and standardizing control points of the key lateral lamination interfaces inside the meandering river point dam; C, simulating erosion and transformation processes of the lateral lamination interfaces which are of different time periods and inside the meandering river point dam, and forming plane positions of secondary lateral lamination interfaces between key lateral lamination; D, simulating erosion and transformation processes of the lateral lamination interfaces of different time periods in a future riverway evolution process, and forming plane positions of future riverway evolution trajectories; and E, determining plane positions and time of growth stopping of the simulated meandering river point dam, and forming simulation results of the plane morphology of the different evolution modes of the meandering river point dam. The method can scientifically predict the plane evolution morphology, the evolution trajectories and a growth trend of the meandering river point dam.

Description

technical field [0001] The invention relates to a modeling method for plane forms of different evolution modes of meandering river point bars, belonging to the technical field of engineering geological modeling. Background technique [0002] The types of meandering river point bars mainly include expansion type, migration type, expansion-rotation type and migration-rotation type. Different types of meandering river point bars have different morphological characteristics, and any type of meandering river point bar has Its complex and varied growth process. [0003] In the field of engineering geology, there is still a lack of feasible methods for the study of the growth mechanism of meandering river point bars, which makes it difficult to scientifically predict the planar growth process of meandering river point bars or the predicted results are quite different from the actual results. The ability to predict geological disasters in the enriched areas of flowing rivers (such a...

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Problems solved by technology

[0003] In the field of engineering geology, there is still a lack of feasible methods for the study of the growth mechanism of meandering river point bars, which makes it difficult to scientifically predict the planar growth process of meandering river point bars or the predicted results are quite different from the actual results. The ability to predict geological disasters in the enriched areas of flowing rivers (such as the Songnen Plain in Northeast my country) has also brought geological safety hazards to the site selection of major engineering constructions, and sometimes may even cause serious damage to the lives and properties of residents near meandering rivers. destroy

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