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Soil rainfall infiltration measurement system and method considering air resistance effect

A technology of air resistance and measurement system, applied in special data processing applications, instruments, electrical digital data processing, etc.

Active Publication Date: 2017-08-18
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the system and method fully consider the characteristics of soil stratification and rainfall instability, which improves the simulation distortion problem and improves the simulation accuracy

Method used

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  • Soil rainfall infiltration measurement system and method considering air resistance effect
  • Soil rainfall infiltration measurement system and method considering air resistance effect
  • Soil rainfall infiltration measurement system and method considering air resistance effect

Examples

Experimental program
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Effect test

Embodiment 1

[0084] The present embodiment is a soil rainfall infiltration measurement system considering air resistance, such as figure 1 shown. The system includes: a Marble jar water supply device 1, the Marble jar water supply device is connected to the rainfall device 3 pipelines, the lower part of the rainfall device is a plexiglass soil column 2, and the plexiglass soil column is a vertical The cylindrical body, the lower end is airtight, and the soil sample 202 is filled inside. There is a rainfall space 201 between the rainfall device and the soil sample. The soil moisture monitoring device 4 is arranged on the side of the plexiglass soil column. The airtight connection between the plexiglass soil column and the rainfall device forms a complete sealing body; the water collection and air collection pipe used to collect all the air and moisture in the sealing body is arranged at the surface of the soil sample in the rainfall space, and the water collection collection The trachea is...

Embodiment 2

[0103] This embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment about the water supply device of the Marble bottle. The Martens bottle water supply device described in this embodiment comprises: a closed cylindrical plexiglass bottle body, a water supply port 105 is arranged on the lower side of the bottle body, and a valve with a regulating valve 102 inserted into the water in the bottle is arranged on the top of the bottle body. Air guide tube 101, and water guide tube 103 for water injection, described water guide tube is provided with switch valve 104, and described bottle is also provided with vial 106 for calibrating the horizontal position of bottle body, as figure 1 shown.

[0104] In order to make the water supply device as horizontal as possible, a vial can be placed in a triangle shape on the upper edge of the Marseok bottle water supply device, so that the vials can be evenly distributed in the three directions of the M...

Embodiment 3

[0106] This embodiment is an improvement of the above-mentioned embodiment, and is a refinement of the above-mentioned embodiment regarding the water vapor collection device. The water vapor collection device described in this embodiment includes: a water vapor manifold 601 communicated with the rainwater space of the tank body, the water vapor manifold is inserted into the bottom of the airtight water collection bottle 602, and the top of the water collection bottle is set U-shaped air guide pipe 603, the U-shaped air guide pipe communicates with the lower half of the airtight gas collecting bottle 604, the bottom of the described air collecting bottle is provided with a U-shaped water guide pipe 605 for drainage, and the outlet of the U-shaped water guide pipe is connected to The inlet of the U-shaped air guide tube on the gas collecting bottle is kept in the same horizontal plane, such as figure 1 shown.

[0107] The water collecting bottle is a transfer station and a mois...

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Abstract

The invention relates to a soil rainfall infiltration measurement system and method considering an air resistance effect. The system comprises a Markov bottle; the Markov bottle is connected with a rainulator mounted in a soil column tank through a pipeline; the soil column tank is a vertical columnar body; the upper and lower ends of the soil column tank are sealed; a soil column is arranged on the lower side in the tank; a rainfall space is arranged on the upper side of the tank; the rainulator is arranged at the top end of the tank and keeps a certain distance from the soil column; the soil column part of a side surface of the soil column tank is provided with a soil moisture monitoring apparatus and an air pressure measurement apparatus; and the rainfall space part is provided with a moisture collection apparatus. According to the system, a watershed rainfall infiltration runoff process is simulated more really; and a measurement result can provide support for research on a mechanism of influence of air resistance on rainfall infiltration runoff. According to the method, a Green-Ampt model is corrected; a saturation coefficient is introduced, so that the influence of air entrapment on soil moisture content and soil water conductivity coefficient is quantized; and a water inflow value is introduced, so that the influence of an air pressure generated by air confinement on soil water potential is quantized.

Description

technical field [0001] The invention relates to a soil rainfall infiltration measurement system and method considering air resistance, and is a simulation system and method for the rainfall infiltration process in soil in the field of hydrology. Background technique [0002] Analyze the internal relationship between rainfall-infiltration-flow production in the basin, and realize the simulation of the process of flow production and confluence in the basin. It is widely used in the fields of water resource evaluation and management, flood control and disaster reduction. During the process of precipitation entering the soil, water continuously enters the soil, and it is difficult for the air in the soil to discharge the soil in time. The air is trapped in the soil, and the air trapped in the soil hinders the infiltration of rainfall into the soil. The existence of imprisoned air causes some air to remain in the soil pores in the humid area, and the actual water content and hydr...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 刘欢甘永德贾仰文刘海滢龚家国杜军凯韩春苗
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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