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Slope water and soil loss prediction method and system based on analog simulation technology

A technology for simulating and predicting methods, applied in the direction of design optimization/simulation, etc., can solve problems such as inability to use, achieve the effects of improving results, reducing estimation deviations, and shortening the experimental process

Pending Publication Date: 2022-08-02
STATE GRID FUJIAN ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the GTWR model constructed by this invention, the simulated value is used as the independent variable, the measured value is used as the dependent variable, and the soil erosion modulus correction model is obtained by performing local regression fitting. value, this method may not work for regions that do not have field sites

Method used

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  • Slope water and soil loss prediction method and system based on analog simulation technology
  • Slope water and soil loss prediction method and system based on analog simulation technology
  • Slope water and soil loss prediction method and system based on analog simulation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Build a simulation system: e.g. image 3 and Figure 4 As shown, the simulation system includes a first entity model, a second entity model, an electric mobile artificial rainfall simulation device, and a data acquisition device.

[0044] like figure 2 and image 3 As shown, the first solid model includes a plurality of runoff troughs with automatic slope change function, and the slope change range of the runoff troughs is 0-30 degrees. There are multiple compartments inside each runoff trough to facilitate comparisons between different surface types. The separation tank is filled with soil, and the soil is as compact as the site to be predicted. In this embodiment, the runoff trough adopts a steel structure with a length of 5m, a width of 2m and a height of 50-70cm; a steel plate with a length of 5m, a height of 80cm and a thickness of 3mm is vertically welded in the runoff trough every 50cm to form 4 partition slots; For anti-rust treatment, a layer of PVC plast...

Embodiment 2

[0049] Predicting the amount of soil and water loss on the slope based on the simulation system built in the first embodiment includes the following steps:

[0050] S1. Perform multiple experiments on the first entity model to obtain n simulated values ​​of soil and water loss:

[0051] Adjust the slope of the runoff trough to be consistent with the location to be predicted; control the nozzle to move above the runoff trough to simulate the average daily rainfall, rainfall intensity, and rainfall time at the location to be predicted to meet the simulated rainfall requirements.

[0052] After the rainfall, the runoff and sediment yields of each separation trough were obtained as the simulated values ​​of soil and water loss.

[0053] S2. Perform multiple experiments on the second entity model to obtain n measured values ​​of soil erosion:

[0054] Control the sprinkler to move above the field terrain model, and simulate the average daily rainfall, rainfall intensity, and rainfal...

Embodiment 3

[0075] Building the second entity model includes the following steps:

[0076] Use 3D laser scanning technology to obtain 3D point cloud data of the location to be predicted, and use a high-speed photocuring 3D printer to print a hollow model shell; prepare soil for terrain reconstruction, fill the model shell with soil and compact it , so that the soil and the internal concave-convex surface of the solid model shell fit together to achieve the effect of accurately restoring the details of the field terrain; after the soil is fully filled and compacted, the bottom bracket is installed and fixed, and the model of soil filling will be completed under normal topography. The shell is placed on the platform, and the model shell is removed to complete the preliminary construction of the second solid model.

[0077] Then, use the 3D laser scanning technology to obtain the 3D point cloud data of the second entity model, compare the 3D point cloud data of the second entity model and th...

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Abstract

The invention relates to a slope water and soil loss prediction method based on an analog simulation technology. The method comprises the following steps: pre-constructing a first entity model and a second entity model; performing an artificial rainfall experiment on the first entity model to obtain a water and soil loss simulation value; performing an artificial rainfall experiment on the second entity model to obtain a water and soil loss measured value; performing regression fitting on the water and soil loss simulation value and the water and soil loss measured value by using a space-time geographically weighted regression model to obtain a first fitting result and a second fitting result; if the difference value between the first fitting result and the second fitting result is smaller than a threshold value, the obtained space-time geographically weighted regression model serves as a water and soil loss prediction model to conduct water and soil loss prediction.

Description

technical field [0001] The invention relates to a method and system for predicting the amount of soil and water loss on a slope based on a simulation technology, belonging to the field of predicting the amount of soil and water loss. Background technique [0002] During the construction of power transmission and transformation projects, a large amount of land will be disturbed, resulting in a large amount of soil erosion. For the tower base built in the red soil hilly area, due to the certain slope of the terrain, the earthwork excavated at the tower base and the stripped topsoil are easy to descend along the slope, resulting in serious soil erosion. It is necessary to analyze the characteristics and laws of soil erosion under different conditions (rainfall intensity, soil type, etc.), and provide scientific and technical guidance for the design and construction management mode of soil and water conservation of power transmission and transformation projects. Therefore, a me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 陈垚江世雄李熙陈国伟王重卿翁孙贤方克艳张建勋吴文庚陈鸿龚建新车艳红
Owner STATE GRID FUJIAN ELECTRIC POWER RES INST
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