Rapid recovery method of natural river landscape of city

Abstract

The invention relates to a rapid recovery method of a natural river landscape of a city. Firstly, the water width and the water depth of a river are measured, the flow cross section of the river is calculated, under the condition that original hard banks are remained, a riverbed is excavated according to the characteristics of the cross section of an original riverbed, the river flow volume of the excavated riverbed equals to the river flow volume of the original riverbed, and the flood carrying capacity of the river is remained; and then, an earth work generated in the excavation of the riverbed is refilled between the hard banks and a riprap slope, an earth slope with a cross section progressively increasing from top to bottom is formed after roller compaction is conducted. Compared with the prior art, hard slope protection does not need to be removed, on the basis of the original width of the river, the riprap slope and the earth slope are built, a structure with a shallow and a deep pool is formed, diversified river local terrains are created relying on the natural evolution of the river, the biological habitat of the river is improved, the diversity of a water flowing and water ecological system is recovered, and the rapid recovery of a river ecological system is achieved.

Description

technical field [0001] The invention relates to the field of river environment management, in particular to a method for quickly restoring the natural landscape of urban rivers. Background technique [0002] At present, in the process of urban river construction, hard revetments are generally used for safety reasons. Although the optimal hydraulic radius of the river channel has been realized and the flood discharge capacity of the river channel has been enhanced, the artificialization of the river channel, the simplification of the cross-section, and the hardening of the river bed have resulted in the degradation of the river ecosystem and a great reduction in biodiversity. In recent years, with the popularization and deepening of the concept of sustainable development, people's awareness of environmental protection and ecological concepts have gradually increased, and the requirements for ecological restoration and reconstruction of degraded rivers have become more and mor...

AI Technical Summary

Problems solved by technology

Although the ecological riverbed constructed by this method can improve the self-purification ability and the stability of the ecosystem of the hard river to a certain extent, the method is complicated to operate and the construction cost is high. The ecological riverbed constructed by this method is troublesome and expensive to maintain. It needs to run for a long time to have an impact on the ecosystem of the river

Images