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Method for simulating hydrologic process of mountain slope scale in gneiss soil rocky mountain region

A technology for soil and rocky mountainous areas and process simulation, which is applied in special data processing applications, instruments, electrical and digital data processing, etc., and can solve problems such as low accuracy and model simulation distortion.

Active Publication Date: 2017-06-20
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

At present, none of the hillside hydrological models take into account the influence of the hydrological characteristics of gneiss rocky mountainous areas on the hydrological process of the hillside, resulting in problems such as simulation distortion and low accuracy in the model

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  • Method for simulating hydrologic process of mountain slope scale in gneiss soil rocky mountain region

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Embodiment 1

[0114] This embodiment is a method for simulating hydrological processes at the hillside scale in gneiss rocky mountainous areas. The process is as follows figure 1 shown. The calculation process of the method described in this embodiment is as follows:

[0115] Hillside calculation unit division: The hillside is divided into several basic calculation units by using the isocurrent timeline method.

[0116] Vertical section division in the calculation unit: According to the characteristics of hillside vegetation, soil and rock, it is divided into 4 layers in the basic calculation unit (contour zone): vegetation canopy interception layer, surface storage layer (litter storage layer and depression Reservoir), soil layer, bedrock layer. The soil layer is further divided into homogeneous soil layer, soil-rock binary mixed medium layer, weathered gravel layer and bedrock layer. The state variables in the calculation unit include: vegetation canopy interception, depression storag...

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Abstract

The invention relates to a method for simulating hydrologic process of the mountain slope scale in a gneiss soil rocky mountain region. The method comprises the steps of division of mountain slope calculation units, distribution of hydro-meteorological data, vegetation interception calculation, infiltration and calculation of water re-distribution process, calculation of flow in soil and calculation of the earth's surface convergence process. The method gives consideration to the situation that earth and stone element mixed media and preferential macro-pore flow widely exist in the gneiss soil rocky mountain region, on one hand, a macadam shape factor epsilon and macadam mass ratio factor Rv are introduced to quantify the influence of the earth and stone element mixed media on the mountain slope water circulation process, on the other hand, the calculation units are divided into preferential macro-pore flow zones and matrix zones based on the division of the mountain slope calculation units, and the water circulation processes of the two flow zones are calculated. Based on the improvement, the method for simulating the hydrologic process of the mountain slope scale in the gneiss soil rocky mountain region is provided. The method makes simulation of the hydrologic process of the gneiss soil rocky mountain slope more accurate and be closer to reality.

Description

technical field [0001] The invention relates to a slope-scale hydrological process simulation method in a gneiss rocky mountainous area, which is a hydrological simulation method and a simulation method aimed at the water cycle process in a gneiss rocky mountainous area. Background technique [0002] Analyzing the internal relationship of hillside hydrological processes in gneiss-rock mountainous areas and realizing the simulation of hillside hydrological processes is the basis for understanding hillside water resources evaluation, management, and soil and water conservation in gneiss-rock areas. The hydrological process of hillsides in gneiss soil-rock mountainous areas is different from that in plain areas, and also different from that in limestone areas, granite areas and other hard bedrock distribution areas. Gneiss soil and rocky mountain slopes have thin soil layers, layered soil, and soil-rock binary mixed media widely distributed in the soil; the lower part of the so...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 甘永德贾仰文刘欢龚家国牛存稳仇亚琴郝春沣杜军凯
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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