Construction method for river beach pool ecological purification system

Abstract

A construction method for a river beach pool ecological purification system relates to a river ecological repairing technology. The technical scheme is that a crooked river channel is adopted as a construction area, one section in the construction area is a river section with the river bend central angle as 90-160 degrees and is provided with more than two bent portions, and the linear length of the construction area is 5-7 times as large as the average width of a main river channel at the river section. The method is characterized in that bend tops of the turning positions at the upper end and the lower end of the river channel in the construction area are dug for 50cm-2m downwards to build a deep pool, earthwork obtained through digging of the deep pool is used for constructing a shallow beach at the center of the river channel of a straight section between the two bent portions of the river channel in the construction area and on the side close to a convex bank at the turning positions of the river channel in the construction area, the shallow beach is 10cm-50cm higher than the original river bottom to form a river island or a river bank beach, large rocks with the specification of 30-80cm are piled on the upstream face of the constructed shallow beach, and a fish channel with the recessed depth as 20-50cm is constructed at the center of the river channel at the downstream of the constructed river island. The method is used for pollution regulation and ecological repairing of rivers.

Description

technical field [0001] The invention relates to the technical field of river ecological restoration. Background technique [0002] River ecological restoration technology is one of the important measures to carry out river pollution control in recent years. At present, ecological river channels, ecological embankments, artificial wetlands, and aeration in river channels are commonly used in practice. These measures are also generally accepted and recognized. All of them are transformed and designed artificially to form a reasonable structure and realize the self-healing function of the ecosystem. [0003] The basic principles of the commonly used river ecological restoration measures are all inspired by the structure formed in the natural state of the river. In fact, there are many characteristics and structures of natural rivers that are worthy of imitation and design in river ecological restoration. Naturally formed shoals and deep pools have advantages in terms of water ...

AI Technical Summary

Problems solved by technology

So far, there is no report and application precedent in my country to realize the ecological purification system of the river's beach and pool through artificial measures in the river.

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