Mobile measuring device and measuring method for grade-change runoff components

Abstract

The present invention discloses a mobile measuring device and a measuring method for grade-change runoff components. The device comprises a square groove to hold soil for experiment. The upper part of the square groove is provided with a rainfall recorder. One end of the bottom face of the square groove is connected to a drive device through a support rod. The drive device controls the inclination degree of the square groove. The left side of the square groove is provided with a control area. Between the square groove and the control area are provided a grade-change slope runoff guiding pipe and a soil middle layer guiding pipe. The invention adopts the hydraulic drive device to drive the square groove to rotate to achieve the function of grade adjustment. For the guiding pipes arranged at the lower end face of the square groove and at different heights, it is possible to simultaneously measure and calculate, under the condition of different rainfall intensities and slope grades, the components of surface runoff which is concentrated on the same soil slope in a non-uniform manner and the components of runoff at different soil depth levels. And based on water balance equation, the vaporization of soil and plants can be further calculated.

Description

technical field [0001] The invention relates to the technical field of slope runoff measurement, in particular to a movable variable-slope runoff component measurement device and a measurement method. Background technique [0002] Slope confluence refers to the confluence process of water flow generated by rainfall from its generation point along the slope to the river channel. Slopes are places where runoff is produced and where runoff is transported. Slope confluence includes the confluence of three runoff components: slope surface, surface layer and underground runoff. The water flow on the slope is mostly in the shape of a ditch or sheet, and the flow from the runoff point to the river network is not long, so the confluence takes a short time. Due to the large surface roughness and steep slope, the inertial effect of water flow can be ignored. Both surface confluence and subsurface confluence belong to the flow movement in porous media. They all move slower than surf...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a mobile variable-slope runoff component measuring device to solve the problem of surface runoff and soil-soil flow in the slope runoff of the same slope soil under different slopes and vegetation coverage conditions in the prior art. , the simultaneous measurement of the base flow, and the measurement of the lateral flow in the soil flow

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