Channel drainage basin renovation planning simulating method and system based on OSG

Abstract

The invention provides a channel drainage basin renovation planning simulating method and system based on an OSG. The method comprises the following steps that a three-dimensional channel drainage basin terrain model based on a digital elevation model (DEM) is constructed, the soil landform layers and the landform characteristic lines of the channel drainage basin are extracted, recognized and visually simulated, the two-dimensional section and the three-dimensional section of the channel drainage basin terrain are dynamically extracted and drawn and rendered in real time, land levelling rendering is performed through the earth volume calculated by the DEM, multiple crop and plant models, basic farmland farming modes and engineering facility models are built, and dynamic loading, replacing, moving and deleting of the models are controlled through a man-machine interaction mechanism. According to the method, the problems of extracting, recognizing and visual stimulating on the important landform features and the soil landform layers of the channel drainage basin and extracting and drawing on the terrain sections are effectively solved, the true conditions of the natural terrain of the channel drainage basin are presented, and a visualization decision making support method for performing man-machine coordination design in the channel drainage basin renovation planning process is supplied.

Description

technical field [0001] The invention belongs to the field of agricultural planning simulation, and in particular relates to an OSG-based simulation method and system for ditch watershed improvement planning. Background technique [0002] Ditch watershed improvement project is an important form of land consolidation, an effective means of increasing cultivated land and balance of cultivated land occupation and compensation, and also an important farmland water conservancy measure for flood control, sediment reduction, and water and soil conservation. Due to the comprehensive influence of factors such as natural conditions, land use status, and social and economic development levels, the investment and risks of the canal improvement project are also different. How to avoid the high risk of the improvement project and promote the sustainable use of land, scientifically plan and formulate A viable channel watershed remediation suitability scheme is critical. [0003] In recent ...

AI Technical Summary

Problems solved by technology

[0005] However, in the current gully watershed renovation process, the renovation experts need to master the method of extracting geomorphic features by professional ARCGIS software, but each extraction operation can only obtain one type of geomorphic features and present them in a planar area. Manual identification; in the land leveling design of the gully, the remediation experts need to use professional software such as Southern CASS to manually design the fill height to calculate the earthwork volume, and it is impossible to combine the landform characteristics into the land leveling design

[0006] Therefore, the existing 3D watershed simulation cannot meet the needs of visual aided decision-making in channel watershed improvement planning.

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