Pocket net type rainfall flood weir for dispersedly collecting and storing water in hilly areas and construction method of pocket net type rainfall flood weir

Abstract

The invention discloses a pocket net type rainfall flood weir for dispersedly collecting and storing water in a hilly area and a construction method of the pocket net type rainfall flood weir. A plurality of spaced rainfall flood weirs are built in a hilly area mountain stream according to local conditions, a drop pad with gravel net bags are arranged in a foundation pit in the bottom of each rainfall flood weir stream, and a foot protection body with gravel net bags is arranged at the middle of each drop pad; revetment walls with the gravel net bags are arranged in an embodiment groove of a mountain stream bank; and the pocket net body stuffed with the gravel net bag is arranged on the drop pad on the upstream side of each foot protection body, and rainwater gathered into each mountain stream is blocked by the pocket net body to form a water storage pool. According to the method, the probability of mountain torrents or debris flow can be reduced, the reservoir-in flood of mountain-exit reservoir engineering is reduced, and the flood control and disaster reduction capacity of a drainage basin is improved; and besides, the time that the blocked rain and flood water fully infiltratesunderground and is adsorbed by vegetation is prolonged, rain and flood resources are reasonably utilized, the bearing capacity of underground water in the hilly area is improved, water and soil conservation of mountains is achieved, and the method is a water conservancy project measure for preventing flood, reducing disasters and effectively utilizing the rain and flood resources.

Description

technical field [0001] The invention relates to the fields of utilization of rainwater and flood resources, flood control and disaster reduction, and hydraulic structures, in particular to a net-type rainwater weir for scattered collection and storage of water in hilly areas. Background technique [0002] At present, in flood control and disaster reduction in river basins, the construction and optimal dispatch of controllable reservoirs are focused, while the collection and utilization of distributed rainwater and flood in hilly areas and its important role in downstream flood control safety are ignored. When it rains in hilly areas, the rain and floods gather in the mountain stream instantly. On the one hand, this part of the rain and floods flow away in vain and cannot be fully utilized; The flood control risk of Shankou controlled reservoir will affect the life and property safety of people in the middle and lower reaches of the river basin. Contents of the invention ...

AI Technical Summary

Problems solved by technology

When it rains in hilly areas, the rain and floods gather in the mountain stream instantly. On the one hand, this part of the rain and floods flow away in vain and cannot be fully utilized; The flood control risk of the Shankou Controlled Reservoir, which in turn affects the life and property safety of people in the middle and lower reaches of the river basin

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