Screen type biological channel of lined canal

Abstract

The invention discloses a screen type biological channel of a lined canal. The screen type biological channel comprises ecological gentle slopes arranged on two side walls of the canal and gradual change slopes on two sides of the ecological gentle slopes. Each ecological gentle slope is a soil gentle slope and is composed of a geonet, a culture medium and fast-growing grass seeds. The geonet is uniformly paved on the ecological gentle slopes, the culture medium is placed in the geonet and the fast-growing grass seeds are placed in the geonet; the gradual change slopes are connected to the section of the original canal and the ecological gentle slopes to guide a water flow, so that the local hydraulic loss caused by the ecological gentle slopes is reduced. The screen type biological channel disclosed by the invention has the advantages that an escape channel is provided for small amphibious animals in an irrigated area while the water-carrying capacity and the water-carrying efficiencyof the existing three-side bare lined canal are not reduced, so that the biodiversity and the ecological functions of the irrigated area are improved, and a technical support is provided for creatinga green ecological irrigated area.

Description

technical field [0001] The invention relates to the technical field of biological channel construction, in particular to a mesh-type biological channel for lining channels. Background technique [0002] At present, in order to improve the efficiency of irrigation water delivery and the effective utilization coefficient of irrigation water, water-saving renovation projects of water delivery and distribution systems are generally carried out in irrigation areas, and the original soil channels are replaced by concrete-lined channels. Although the water-saving renovation project has effectively improved the water delivery efficiency of the irrigation area and saved irrigation water, it also poses a threat to the fragile ecological environment of the field. [0003] Open channels are usually lined with trapezoidal or U-shaped structures, with concrete surfaces on both sides and steep slopes. Once amphibians such as snakes and frogs fall into the channel in the irrigation area, it...

AI Technical Summary

Problems solved by technology

In addition, irrigation channels generally provide intermittent water supply. In hot summer weather, once the water in the channels evaporates, small amphibians will die due to lack of water.

Therefore, the lining channel actually divides the irrigation area into ecological islands. After the irrigation area is fragmented into ecological islands, the ability of self-repair and self-regulation is obviously reduced, which affects the ecosystem stability and biodiversity of the irrigation area.

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