A distributed runoff device for generalized simulation of karst landforms

Abstract

A distributed runoff producing device for generally simulating the karst landform is a hydraulic engineering simulation test device and comprises a bottom layer relief model and runoff producing units arranged on the bottom layer relief model, wherein the runoff producing units are spliced horizontally, and the bottoms of every two adjacent runoff producing units are communicated with each other through a U-shaped hose. Each runoff producing unit comprises a runoff producing barrel and percolation cloth built in the runoff producing barrel, wherein a convergence way is arranged on the top of the runoff producing barrel and connected to a surface runoff convergence groove, a convergence pipe is arranged at the bottom of the runoff producing barrel and connected to an underground runoff convergence groove, and the downstream portion of the surface runoff convergence groove and the downstream portion of the underground runoff convergence groove are connected with a measuring weir. The bottom layer relief model is manufactured according to the research area through equal proportion shrinkage, part of rainwater penetrates into the runoff producing barrels through the percolation cloth, rainwater in the runoff producing barrels enters the underground runoff convergence groove through the convergence pipes, rainwater left on the percolation cloth enters the surface runoff convergence groove through the convergence ways, the water-carrying capacity is measured through the measuring weir, and the test result is obtained through analysis and calculation.

Description

technical field [0001] The invention relates to a distributed runoff generation device for generalized simulation of karst landforms, in particular to a simulation device which utilizes a percolation cloth to simulate runoff generation and is arranged on a bottom terrain model, belonging to the field of hydraulic engineering model tests. Background technique [0002] Hydraulic engineering research is an important research topic for human beings to understand nature, and it is of great significance to the changing laws of natural water conservancy. Since the distributed watershed hydrological model can objectively reflect the influence of the spatial distribution of climate and underlying surface factors on the formation of rainfall runoff in the watershed, it can provide a powerful tool for truly simulating the formation mechanism of rainfall runoff in the real world. Therefore, it has been It has become a hot issue in the field of international hydrological science research...

AI Technical Summary

Problems solved by technology

[0003] Existing distributed hydrological models are mainly used in non-karst watersheds in the traditional sense, and most of them use the surface morphology of the watershed as the basis of the model structure, but there are few studies on karst watersheds with more complex underlying surface conditions such as geological landforms

In the study of distribution hydrological model in karst landform, due to the complex conditions of the underlying surface, it is often impossible to judge the location of the descent funnel of the underground river, resulting in the inability to judge the confluence time, and the confluence time of surface runoff and underground runoff is also unclear

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