Liftable and portable rainfall simulator suitable for high-heterogeneity karst slope

Abstract

The invention discloses a liftable and portable rainfall simulator suitable for a high-heterogeneity karst slope. The liftable and portable rainfall simulator comprises a combined four-spraying-nozzle rain generator, a water supply system and a lifting type rainfall simulator support. The combined four-spraying-nozzle rain generator and the water supply system are screwed with a second right-angle elbow through loose joint. A DN25 water delivery steel pipe is inserted into a DN32 sleeve, and then a bolt is screwed into a third fixing nut to enable the water supply system and the lifting type rainfall simulator support to be connected. Two ends of a primary three-way main pipe are connected with a secondary three-way branch pipe in a through mode, two ends of a second three-way main pipe are connected with ball valves, and the ball valves are connected with spraying nozzles through right-angle elbows. The liftable and portable rainfall simulator adopts the combined spraying nozzles and is adjustable in height, convenient to carry and simple in manufacture, and the bottleneck of slope infiltration and erosion research carried out in regions with very high heterogeneity similar to karst and the like is overcome.

Description

technical field [0001] The invention belongs to the technical field of artificial rainfall simulation, and more specifically relates to a liftable portable simulated rainfall device suitable for highly heterogeneous karst slopes, which is suitable for teaching, scientific research and environmental protection departments to carry out erosion and hydrological monitoring under various vegetation and land use types. and nutrient transfer studies. Background technique [0002] The water storage capacity of the shallow soil layer in the karst area of ​​Southwest China is weak, coupled with the abundant karst pores and fissures, the surface water leaks a lot, the groundwater pollution is becoming more and more serious, and the drought and flood disasters are frequent. Water is the key to solve the ecological problems in the karst area and achieve sustainable social and economic development. key. Therefore, in order to deepen the understanding of the hydrological cycle in karst ar...

AI Technical Summary

Problems solved by technology

However, the structure and performance of the existing simulated rainfall devices are not yet suitable for the study of karst slope hydrology

First of all, the existing simulated rainfall devices cannot flexibly adjust the sprinkling height according to the height of the ground cover, and cannot adapt to the diverse vegetation and land use types in karst areas; secondly, most of the existing simulated rainfall devices have complex structures, time-consuming disassembly and assembly, and require a wide erection site, which is not easy It is transported and operated on complex hillsides similar to karst areas; thirdly, most of the existing simulated rainfall devices are expensive to manufacture, and it is basically impossible to manufacture them in large quantities. The invention is simple to manufacture and can be quickly realized by simple processing of commonly used pipes. low cost

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