Ecological refitting structure of urban hard watercourse

Abstract

The invention relates to the field of water conservancy engineering, ecological engineering and environmental engineering, and discloses an ecological refitting structure of an urban hard watercourse.The ecological refitting structure comprises a plurality of semicircular ecological repairing units alternately distributed on banks on the two sides of the watercourses. Chords of the semicircular ecological repairing units are attached to the banks. Each semicircular ecological repairing unit comprises two quadrant ecological ground sills, wherein the two ecological ground sills are internallyprovided with a submerged plant repairing module and a large benthonic animal perching module correspondingly, a gap which is 0.5-1 m wide is reserved between arc tops of the two ecological ground sills, and a microorganism substratum module is arranged between the submerged plant repairing module and the large benthonic animal perching module. By means of the ecological refitting structure of theurban hard watercourse, the watercourse flood control security is ensured, the habitat repairing measures are stably taken, and watercourse flood control security and ecological landscapes are both considered.

Description

technical field [0001] The invention relates to the fields of water conservancy engineering, ecological engineering and environmental engineering, in particular to an ecological transformation structure of urban hard river courses. Background technique [0002] For a long time, the main goal of traditional river regulation is to prevent floods, and artificial channelization is mainly adopted to cut bends and straighten the river, and the river cross-section is repaired into a uniform regular rectangle or trapezoid. However, this transformation method has caused a large area of ​​hardening of the river revetment, which not only destroys the natural meandering shape of the river, but also causes the loss of suitable aquatic habitats, degrades the ecosystem, and reduces the self-purification capacity of the water body. According to statistics, the degree of hardening of revetments in urban rivers in my country has reached about 70%, which is extremely inconsistent with the curr...

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Problems solved by technology

[0005] 2) During the flood discharge period, the water flow is fast, and the existing ecological improvement measures are vulnerable to impact

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