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Experimental device and method for simulating soil erosion characteristics of loess areas

A soil erosion and experimental device technology, applied in the field of soil erosion characteristics research, can solve problems such as imperfection, high cost, and complex erosion mechanism

Inactive Publication Date: 2018-08-03
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the erosion mechanism of loess under the action of surface runoff is very complicated. At present, some scholars have proposed some theories to explore the erosion characteristics under different vegetation coverage and slope conditions, but there are still many incomplete parts.
[0004] For example, patent CN201610851714.2 discloses a remote sensing technology-based method for loess gullies to trace the erosion range prediction method, which is characterized by extracting the erosion boundary lines of multi-stage loess gullies through high-resolution remote sensing images, digital elevation data and precipitation data , calculate the traceable erosion range of loess gullies in multiple periods, establish a prediction model for the traceable erosion range of loess gullies, and focus on the prediction of the erosion range of loess gullies at the macro level, but this technology does not explore the mechanism of loess erosion, and the cost is relatively high. high

Method used

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  • Experimental device and method for simulating soil erosion characteristics of loess areas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like figure 1 , including an experimental water tank 13, the experimental water tank 13 is provided with a water tank water outlet and a water tank water inlet. Vegetation is planted in the experimental soil 12 , the experimental soil 12 is placed in the soil sample holding tank 10 , the experimental water tank 13 is supported by a bracket 17 , and the slope adjustment device 18 can change the slope of the experimental water tank 13 . The water supply device comprises a water tank 2, and a water supply pipe 1 and a water outlet pipe 15 are connected to the water tank. The water supply device includes an overflow tank 4 , and the overflow pipe 3 is connected to the overflow tank 4 .

[0037] Further, the gradient adjustment device 18 includes a hydraulic cylinder; the upper end of the hydraulic cylinder is connected to the main structure of the experimental water tank 13 . The advantage of the design here is that the characteristics of the hydraulic cylinder are utiliz...

Embodiment 2

[0053] An experimental method of any experimental device for simulating soil erosion characteristics in loess areas, which includes the following steps:

[0054] The first step is to prepare before the experiment. According to the reality of the slope of the watershed to be simulated, configure soil samples. The types, compactness, moisture content and other indicators of soil samples are different. If the experimental soil surface is covered with vegetation, it should Vegetation is planted in the soil sample holding tank, and the types, densities and growth periods of the vegetation are different;

[0055] The second step is to connect and assemble the device, put the soil sample holding tank into the experimental water tank, tighten the bolts to fix it, replace the aluminum alloy baffle at the bottom of the soil sample holding tank with a steel wire mesh baffle, and turn on the water pump to the water tank Inject water in the middle, and then open the shut-off valve on the w...

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Abstract

The invention relates to an experimental device for simulating soil erosion characteristics of loess areas. The experimental device comprises an experimental water tank, wherein the experimental watertank is hinged and mounted at the top of a support, a water inlet and a water outlet are arranged on the experimental water tank, a soil sample containing tank is arranged in the experimental water tank, experimental soil is contained in the soil sample containing tank, and a regulating chamber is arranged at one end of the experimental water tank and connected with a water supply device. The experimental device simulates conditions of actual engineering through models, analyzes the action mechanism of slope runoff on slopes under different loess types, soil slope inclination and slope vegetation from the erosion process, explores the interaction relations between influence factors and guides later treatment of slopes in the loess areas.

Description

technical field [0001] The invention relates to an experimental device and method for simulating soil erosion characteristics in loess areas, in particular to the field of soil erosion characteristics research. Background technique [0002] With the development of society and the advancement of technology, human beings are becoming more and more capable of transforming nature, and the damage to the environment is becoming more and more serious. The destruction of natural vegetation, land desertification, and soil erosion are intensifying. my country is one of the countries with the most serious water and soil loss in the world, and the area of ​​water and soil loss is extensive. According to the results of the first national water conservancy census, my country's existing soil erosion area is 2.9491 million square kilometers. Serious soil erosion is a concentrated reflection of my country's ecological deterioration, threatening national ecological security, drinking water s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 郑祥旺范勇陈国柱方芙蓉谢伟
Owner CHINA THREE GORGES UNIV