Method for ecological restoration of river channel by constructing modular ecological islands

Abstract

The invention discloses a method for ecological restoration of a river channel by constructing modular ecological islands. The method comprises the following step that the distribution positions of the modular ecological islands to be constructed in the river channel, the number of the ecological islands, the area of each ecological island and the distance between every two ecological islands aredetermined according to the basin perimeter, hydrological characteristics and water treatment requirements of the river channel to be ecologically restored. The construction of the ecological island at each distribution position specifically involves the following steps that an annular enclosure pile frame is constructed at the distribution position, the lower end of the enclosure pile frame is embedded into the river bed for fixation, the upper end of the enclosure pile frame extends to the portion above the normal water level of the river channel, and the peripheral wall of the enclosure pile frame is provided with inflow and outflow gaps for river channel water to penetrate through and used for controlling the water amount and water flow distribution conditions of water flowing in and out of the enclosure pile frame. An island body for conducting natural ecological purification on the river channel water entering each enclosure pile frame is constructed on the portion, in an enclosure area of the enclosure pile frame, of the river bed.

Description

technical field [0001] The invention relates to the field of watershed management, in particular to a method for constructing a modular ecological island for river ecological restoration. Background technique [0002] With the rapid development of urbanization in my country and the unnatural changes of the river channel caused by traditional water conservancy projects (such as the construction of dams and gates in the river channel), the continuity and meandering of the river channel have been destroyed, and the water environment problems in the basin have become increasingly serious. Outstanding, receiving water bodies such as rivers and lakes are polluted by various point sources, non-point sources and internal sources, resulting in poor self-purification ability of receiving water bodies, water quality turning black and smelly, water ecosystem degradation, and loss of natural river channels. function of ecological properties. [0003] At present, the measures used for ecol...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for constructing modular ecological islands for ecological restoration of river courses, so as to solve the problems of limited water quality purification ability and effect, and limited Technical problems such as high energy consumption, inconvenient daily maintenance and management, cumbersome construction steps, long construction period and high manpower and material costs

Images