Rainwater collecting and recycling system for slope road with ditch in southwest hilly area

Abstract

The invention discloses a rainwater collecting and recycling system for a slope road with a ditch in a southwest hilly area. A rainwater collecting and recycling device is arranged between the slope road and a drainage ditch in the southwest hilly area, the rainwater collecting and recycling device is composed of a water collecting tank, a filtering layer, a gravel layer, a hedgerow and a water pumping device, the water collecting tank is of a closed cavity body structure, the top of the water collecting tank is sequentially provided with the filtering layer, the gravel layer and the hedgerow upwards, the water collecting tank and the drainage ditch are arranged in parallel, the upper part of the water collecting tank is provided with an overflow hole which communicates with the drainage ditch, the bottom position of the water collecting tank is lower than the bottom position of the drainage ditch, the water pumping device comprises a water suction pump, a water pumping pipe and a water outlet pipe, the water suction pump is arranged on one side of the hedgerow, the water pumping pipe is connected with a water inlet of the water suction pump, and a water outlet pipe is connected with a water outlet of the water suction pump. According to the rainwater collecting and recycling system, rainwater resources can be balanced, recycling of rainwater is realized, and loss of water, soil and nutrients in southwest hilly area is reduced.

Description

[0001] This application is a divisional application with an invention title of "A System for Collecting and Reusing Rainwater from Sloping Roads and Ditches in Southwest Hilly Areas". The application number of the parent application is 201910308827.1, and the filing date is 2019.04.17. technical field [0002] The invention relates to the field of comprehensive utilization of rainwater, in particular to a rainwater collection and reuse system based on a hedgerow planting mode in southwestern hilly areas and road belt ditches. Background technique [0003] The water resources in the southwestern hilly areas of my country are affected by the monsoon climate, and the seasonal distribution is uneven, and the precipitation is mainly concentrated in summer. During the flood season, the precipitation for four consecutive months accounts for 60%-80% of the annual precipitation, which is prone to summer floods. About two-thirds of the summer rain is flood runoff, and if the rainwater...

AI Technical Summary

Problems solved by technology

Use permeable concrete for road construction or permeable bricks on the sidewalk, and set rainwater wells under the permeable concrete / permeable bricks for rainwater collection. This method is less operable and requires more engineering for hilly areas. Big

At the same time, the road surface rainwater interception project requires high infrastructure for road construction, and its construction cost is also high. In addition, the special terrain of the southwestern hilly area and the lack of irrigation facilities make it difficult to pump water for irrigation.

Due to the heavy rainfall during the flood season, for the southwestern hilly areas, heavy rain not only causes the loss of soil particles and nutrients, but also reduces the rainwater use efficiency

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