Double-layer ecological riverway structure suitable for mountain sponge city construction

Abstract

The invention discloses a double-layer ecological riverway structure suitable for mountain sponge city construction. The double-layer ecological riverway structure comprises an upper layer natural river and a lower layer underground river which are identical in flow direction but are high in longitudinal height difference, and the upper layer natural river plane is in the natural shape of "twistsand turns"; buildings such as deep pool, shoal, waterfall and the like are arranged in the longitudinal direction; and the cross-section width is different, and the size is varied. The lower layer underground river plane and the longitudinal direction are kept consistent with the original river; and the cross section adopts an optimal structure section. According to the double-layer ecological riverway structure, high-difference upper and lower two-layer riverways solve the problem of deep of mountain stream before urbanization, large height difference between urban rivers and surrounding cities before urban cicity is solved; the flood control problem in the construction period when the urban construction rivers are constructed is solved through the lower layer underground river; the problems that urban rivers are free of elasticity, free of sponge features, ecological and fragile are solved through the upper layer ecological river construction; and the lower-layer underground river isprovided with a drainage anti-filtration facility, so that the underground water level of the backfill region can be effectively prevented from rising to the damage of the underground structure.

Description

technical field [0001] The invention belongs to the field of water conservancy engineering, in particular to a double-layer ecological river structure suitable for the construction of mountain sponge cities. Background technique [0002] Urban ecological rivers undertake the dual tasks of flood control and ecological civilization. It is necessary to create an urban river engineering system that integrates flood control, ecology, hydrophilicity, landscape, and leisure functions to achieve the harmonious development of people, water, and the city. [0003] Today, with the accelerating process of urbanization and industrialization, urban river management, restoration and upgrading work is in full swing across the country. However, in the past, the goals in the process of river management were too monotonous, and only the functions of flood control, drainage, and water storage were considered. Rigid materials such as concrete and masonry were mostly used for bank protection and ...

AI Technical Summary

Problems solved by technology

[0004] (1) Urban rivers are "rigid": the plane shape is "linear", the vertical "slope", the section type is "regular", and the protective materials are "rigid", ignoring the ecological function of the river

[0005] (2) The amount of pollutants received by urban rivers exceeds the self-purification capacity of the rivers, leading to the deterioration of urban river water quality

[0006] (3) The linearization and channelization of urban rivers have blocked the communication between the river course and other members of the ecosystem, resulting in serious damage to the river ecosystem

[0007] (4) Lack of urban river landscape

This invention patent has the same connotation as the North Moat of Beijing and the double-layer river of Utsunomiya City. It only solves the disadvantages of poor hydrophilicity of ordinary deep and narrow rivers, and cannot solve the problem of deep mountain streams and undulating mountains before urbanization. Urbanization There is a large height difference between the back river and the surrounding cities; the urbanization process is the flood control problem in the upper reaches of the river during the construction period; the rise of the groundwater level in the backfill area after urbanization damages the underground structure; the construction of urban rivers is inelastic and has no sponge characteristics; The ecological fragility of rivers and other issues

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