Test device for vadose zone water flow movement under different buried depths

A technology of motion test and vadose zone, which is applied in the direction of water test, soil material test, material inspection, etc., to achieve the effect of simple structure, low cost and high measurement accuracy

Inactive Publication Date: 2016-01-13
HOHAI UNIV
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Problems solved by technology

[0005] The present invention proposes a test device for water flow movement in vadose zone under different buried depths. Starting from reducing the experimental error of instruments and manpower input, it aims to overcome the defects of existing test device technology for water flow in vadose zone, and can realize different groundwater Automatic monitoring of water dynamics in vadose zone during rainfall infiltration at buried depth

Method used

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  • Test device for vadose zone water flow movement under different buried depths
  • Test device for vadose zone water flow movement under different buried depths

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Embodiment Construction

[0014] Such as figure 1 As shown, the test device for water flow movement in the vadose zone at different buried depths, its structure includes a vadose zone water flow forming device, an automatic water replenishment device, a runoff water collection device, and a seepage water collection device. Wherein the measurement inner cylinder 8 is in the measurement outer cylinder 9, and the measurement inner cylinder 8 is filled with the undisturbed soil column (if crops are planted on the undisturbed soil column, the evapotranspiration monitored in this experiment is the evapotranspiration of the soil and plants) and the filter layer 11. The anti-filter layer 11 is placed at the lower part of the undisturbed soil column, and the outer side of the bottom of the measurement inner cylinder 8 is the load cell 4, and the load cell 4 is connected to the bottom of the measurement outer cylinder 9 through the sensor support device 6, and the left side of the sensor support device 5 is The ...

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Abstract

The invention discloses a test device for vadose zone water flow movement under different buried depths. The test device comprises a measurement cylinder, a balance cup connected to the measurement cylinder and a Mariotte flash connected to the balance cup. The measurement cylinder is internally provided with a weighing sensor, the upper end of the weighing sensor comprises an inverted filter and an undistributed soil column from top to bottom in order, a runoff drain pipe is connected to a position at an equal height to the undistributed soil column on the upper end of the measurement cylinder, a seepage drain pipe is connected to the inside of the balance cup, and the Mariotte flash is internally provided with a third hydraulic sensor for measuring the flow fed from the Mariotte flash to the balance cup. The test device can monitor the surface runoff, soil infiltration capacity and evaporation capacity at the same time, has the characteristics of simple structure and low cost, effectively improves the measurement accuracy, and is convenient to use and repair.

Description

technical field [0001] The invention relates to a field test device for measuring water flow movement in a vadose zone, which is especially suitable for long-term automatic observation under different buried depths of groundwater, and belongs to the field of hydrometeorological testing. Background technique [0002] The vadose zone is a soil zone where soil moisture changes drastically, and its upper boundary is directly in contact with the atmosphere. It is not only the receiving surface of atmospheric precipitation, but also the evaporation surface of soil evaporation. When plants are growing in the aerodic zone, the change of soil moisture in the aerodic zone is more complicated. The groundwater recharge at the lower interface will increase the water growth in the vadose zone, and the internal drainage will make the water in the vadose zone subside. The vadose zone is the only channel through which groundwater communicates with atmospheric water and surface water. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N33/18
Inventor 鞠琴郝振纯余钟波吴志勇郝洁顾鹤南向龙赵妍郭磊堵同柱
Owner HOHAI UNIV
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