Device for collecting and measuring effective precipitation by using fixed water table

Abstract

The invention discloses a device for collecting and measuring effective precipitation by using a fixed water table. The device for collecting and measuring the effective precipitation by using the fixed water table comprises a base; a box body is fixedly mounted on the top end of the base; a rain gauge is fixedly mounted on one side of the top end of the box body; the other side of the top end ofthe box body is fixedly embedded with an original soil measuring box; the bottom end of the original soil measuring box extends into the box body and is fixedly connected to the top end of a first partition plate; the first partition plate is L-shaped, and the two ends of the first partition plate are separately fixedly connected to the inner wall of the box body; a first measuring box is fixedlyconnected to the side wall of the original soil measuring box; and the first measuring box is concentric-square-shaped. In the device for collecting and measuring the effective precipitation by usingthe fixed water table, a first filter screen fitted with a stopper is arranged in the concentric-square-shaped first measuring box, which can effectively block the sediment from entering the first measuring box and affecting the accuracy of the measurement of the device; and a motor is used to drive a piston back and forth, therefore, the precipitation can be effectively extracted from the water tank; thus, even if the amount of precipitation is large, the precipitation can be discharged in time for measurement, and the device can perform measurement, which indirectly increases the work efficiency.

Description

technical field [0001] The invention belongs to the field of precipitation measurement, and in particular relates to a device for collecting and measuring effective precipitation by fixed groundwater level. Background technique [0002] Effective precipitation refers to the amount of rainfall that infiltrates and can be stored in the root water-absorbing layer during any precipitation process falling on the ground under natural conditions. The calculation of effective precipitation involves precipitation, land surface during precipitation Evapotranspiration, the amount of water infiltrated into the soil and stored in the soil during precipitation and runoff, and the amount of deep seepage. [0003] Although the existing devices for collecting and measuring effective precipitation using fixed groundwater levels can effectively improve the measurement accuracy of effective precipitation, the pipelines used are easy to be blocked, and a large amount of sediment will enter the m...

AI Technical Summary

Problems solved by technology

[0003] Although the existing devices for collecting and measuring effective precipitation using fixed groundwater levels can effectively improve the measurement accuracy of effective precipitation, the pipelines used are easy to be blocked, and a large amount of sediment will enter the measuring contai

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