Ecological restoration method for dry river

Abstract

The invention discloses an ecological restoration method for a dry river. The ecological restoration method comprises the following steps: S1, river bed condition survey and river bed base condition treatment; S2, river bank restoration; S3, river hydrological restoration: setting a self-priming centrifugal pump I at the upstream of the river, connecting the self-priming centrifugal pump I to a reservoir through a pipeline, when the river is in a dry season, dispatching water in the reservoir to supply water to the river by the self-priming centrifugal pump I, guaranteeing a minimum ecologicalwater demand in the riverway, setting a self-priming centrifugal pump II at the downstream of the river, connecting the self-priming centrifugal pump II to the upstream of the river through a pipeline, in a water shortage, pumping water at the downstream of the river to be lifted to the upstream by the self-priming centrifugal pump II, then enabling the water to flow down from the upstream, keeping flowing of the riverway water, and creating a concave-convex terrain for the river bed to collect rainwater and create a water beach in the dry season, thus increasing the rainwater infiltration rate; and S4, performing graded ecological restoration on the upstream, middle and downstream of the river. The method has the advantage that the water ecosystem of the dry river can be systematically and completely restored.

Description

Technical field [0001] The invention belongs to the technical field of ecological restoration methods for water bodies, and specifically relates to an ecological restoration method for low-water rivers. Background technique [0002] The flow and water level of low-water rivers vary significantly with the seasons. The water volume of the river is very unstable and cannot meet the needs of water use. In addition, flood disasters occur frequently during high-water periods, severe dry-flow during low-water periods, and the river ecosystem is extremely fragile. [0003] Due to traditional flood control projects and industrial pollution along the banks of low-water rivers, the river course has a high degree of artificialization and serious water pollution. In recent years, the ecosystem of low-water rivers has been severely degraded, river vegetation has been degraded, river beds have been exposed, and natural landscapes have gradually degraded. With the deterioration of river water qua...

AI Technical Summary

Problems solved by technology

However, it is not suitable for dry rivers, where there may be blockage, leakage, etc., and it cannot be used during flooding and dry seasons

[0004] Today's traditional artificial treatment methods such as storage dams and ecological floating beds are partially effective, but they are costly and do not have long-term applicability