Ecological restoration structure of double-layer arc-shaped riverbed

Abstract

The invention discloses an ecological restoration structure of a double-layer arc-shaped riverbed. The ecological restoration structure comprises an outer-layer downflow weir, an inner-layer downflowweir and dimension stone dam abutments, wherein the inner-layer downflow weir and the outer-layer downflow weir both protrude towards the upstream of a river in an arc-shaped way, the inner-layer downflow weir is located at the downstream of the outer-layer downflow weir, and the inner-layer downflow weir and the outer-layer downflow weir are lower in middle and higher in two sides and are connected with the dimension stone dam abutments. Compared with existing riverway protecting measures, the ecological restoration structure has the multiple functions of protecting river banks against erosion, enhancing underground water exchange of ground water, protecting a riverway ecosystem, improving the self-cleaning capacity of the riverway and the like. By adopting the structure, destruction ofthe riverway ecosystem is avoided, the flowability of the surface water and the underground water is improved, the natural riverway ecosystem can be effectively protected, the water body self-cleaningcapacity of the riverway is improved, and meanwhile habitats are provided for aquatic organisms. The ecological restoration structure is low in cost, required labor is little, the service life of thestructure is long, and the structure has the very wide application prospect in the fields of riverway improvement, river bank protection, river water pollution treatment and the like.

Description

technical field [0001] The invention relates to the field of river channel water and soil conservation and river ecological management, in particular to a double-layer curved riverbed ecological restoration structure and a design method. Background technique [0002] Soil and water conservation is the lifeline of the development of mountainous areas, the foundation of land consolidation and river management, and the foundation of national economic and social development. River bank erosion exists along the banks of almost all rivers. The eroded river banks often cause serious environmental problems, and severe river bank collapses may even lead to major dangers, seriously threatening the lives and property of people along the banks. After the sediment stripped from the river bank enters the river, it will further damage the water quality, affect the growth and development of aquatic organisms, and even silt the river downstream, affecting navigation. However, the traditiona...

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Problems solved by technology

[0003] At present, the technologies adopted in my country to prevent river bank erosion, maintain river ecology, and control river pollution are basically still at the level of surface water treatment alone, without considering the strong connectivity between surface water and groundwater as an organic whole. , thus ignoring the significance of the exchange of surface water and groundwater to the river ecosystem

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