Surface runoff uniform arrangement device and arrangement application method for complicated small catchment areas

Abstract

The invention relates to a surface runoff uniform arrangement device and an arrangement application method for complicated small catchment areas. The surface runoff uniform arrangement device is characterized in that a double outside-wire conversion connector is connected with a water diversion tee joint and a flow regulating valve; a water meter is connected with the flow regulating valve and a water division tee joint; the other two ends of the water division tee joint are connected with outside-wire conversion connectors; the outside-wire conversion connectors and a porous water division pipe are fused for forming an arrangement pipe; the end head of the porous water division pipe is provided with a chock plug; the porous water division pipe is uniformly distributed with outlet holes; a pipeline levelling instrument is attached to the water division tee joint. The arraignment application method comprises the following steps of horizontally dividing a terrain into a plurality of water distribution units with identical slope aspects in the horizontal direction; recording a horizontal width, marking a center position and arranging a water supply pipe water diversion outlet. The water diversion tee joint of the surface runoff uniform arrangement device is connected with the water supply pipe water diversion outlet, and the eyelets of the water outlet holes are adjusted to face upwards; a water supply system is started, the flow is regulated, and the water supply system is started. According to the surface runoff uniform arrangement device and the arrangement application method for the complicated small catchment areas, controllable surface runoffs can be uniformly arranged in the complicated small catchment areas; the surface runoff uniform arrangement device has the advantages of simple structure, convenience in installation, easiness in operation and stable performance and is provided with a debugging system.

Description

technical field [0001] The invention belongs to the field of ecological environment research, and in particular relates to a surface runoff uniform layout device and a layout application method suitable for complex water collection areas. Background technique [0002] Surface runoff is the carrier and driving factor of soil erosion and agricultural non-point source pollution. Controllable, stable and uniform surface runoff distribution is of great significance for the quantitative study of soil erosion and non-point source pollution load. In the study of slope soil erosion and agricultural non-point source pollution, the surface runoff is collected by simulating artificial rainfall, and the surface runoff is evenly simulated by self-made equipment layout. The former adopts aerial spraying device, which is mostly used in runoff areas. The advantage is that the runoff intensity and uniformity are easy to control, but the disadvantage is that the impact of raindrop splashing c...

AI Technical Summary

Problems solved by technology

Its advantage is that the runoff intensity and uniformity are easy to control, but the disadvantage is that the impact of raindrop splashing cannot be eliminated, and when runoff occurs, there are differences in the distribution of runoff flow between the upper and lower parts of the slope, and it is easily affected by the wind

The latter is used more in relatively flat runoff plots, but when rill erosion occurs, due to changes in the topography of the plot, the flow pattern of surface runoff is difficult to control, and its use is limited

Due to the difficulty of laying out stable and uniform surface runoff, there are few quantitative research results on soil erosion and agricultural non-point source pollution in catchment areas

Due to the limited distribution of surface runoff, the quantitative research on soil erosion and agricultural non-point source pollution is mostly limited to the slope scale, and the research results are difficult to apply to the watershed

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