Field natural slope surface runoff and interflow monitoring device

Abstract

The invention discloses a field natural slope surface runoff and interflow monitoring device. The device comprises a test plot for separately monitoring surface runoff and interflow, a surface runoffcollecting device and a layered interflow collecting device, and is characterized in that the test plot for separately monitoring the surface runoff and the interflow is connected with the surface runoff collecting device and the layered interflow collecting device through flow guide pipes respectively. The device has the beneficial effects that the surface runoff and the interflow of different layers are separately guided out, the surface runoff can be collected and guided out without errors, meanwhile, the difficulty that the interflow cannot be accurately guided out originally can be solved, and the interflow of each layer can be accurately collected; the surface runoff collecting device adopts two-stage shunting and can collect surface runoff which is dozens of times of the volume of the pool; and the stratified interflow collecting device can continuously monitor stratified interflow by adopting a triangular weir crest principle.

Description

technical field [0001] The invention relates to a collection monitoring test device, which belongs to the field of water and soil conservation, in particular to a monitoring device for surface runoff and soil midflow on natural slopes in the field. Background technique [0002] Runoff is formed by atmospheric precipitation and enters a river, lake or ocean through different paths within a watershed. Runoff can be divided into soil inflow, soil inflow and groundwater flow according to its formation and flow path. Among them, traditional soil and water conservation work focuses on the collection of surface runoff for monitoring soil and water loss. However, there is a lack of collection of soil inflows, especially stratified soil inflows. The seepage flow formed by rainfall is blocked and accumulated on the discontinuous interface of the soil layer, forming a temporarily saturated zone and forming a soil inflow. When the soil has a layered structure and the infiltration cap...

AI Technical Summary

Problems solved by technology

[0004] The past surface runoff and soil inflow collection devices have the following defects. 1. Traditional devices focus on surface runoff monitoring and ignore soil inflow monitoring; 2. The current surface runoff and soil inflow monitoring devices have enclosures, but no bottom plates have been established, and no airtightness has been formed. 3. The current surface runoff and soil flow monitoring device does not consider the soil development layer and the stratified outflow of soil flow; 4. The existing surface runoff and soil flow devices do not consider Stratified soil flow filtration and converging device, resulting in slow outflow in the soil, and easy to cause the water level of the soil to rise, forming a supersaturated layer; The falling rainwater will splash into the test plot to increase the surface runoff;

[0005] In the patent No. CN208568766U, a similar device has been described, and its device can collect surface runoff; but it does not have a layered filtering and converging device for the soil flow, and cannot collect the layered soil flow; its enclosure is formed by pouring concrete at one time, and the enclosure It is thick and has a large contact area with rainfall, so it is impossible to prevent rainfall from dripping and splashing into the test plot from the ridge, which will bring errors; it does not have perfect surface runoff and soil inflow collection devices

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