Terrace-imitated multi-pond river bank structure

Abstract

The utility model provides a terrace-imitated multi-pond river bank structure, relates to the technical field of water conservancy and water ecological management, and solves the problems of shortage of land resources and insufficient attractiveness in existing river bank management. The ecological pond comprises a plurality of layers of ecological ponds which are arranged in a step shape from top to bottom, the peripheries of the ecological ponds are defined by retaining walls, the ecological pond on the upper layer is communicated with the ecological pond on the lower layer through a first overflow port, the ecological pond on the top layer is provided with a settling pond, the settling pond is communicated with the ecological pond on the top layer through a filter dam, and the settling pond is communicated with the ecological pond on the bottom layer through a second overflow port. An aquatic purification and soil fixation system is arranged in the ecological pond. The device has the beneficial effects that a wetland effect is formed, the residence time of water entering a river is prolonged, the water quality purification effect is improved, and the effect of beautifying a river bank and the surrounding environment is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water conservancy, water ecological management technical field, concretely relates to a kind of terraced field multiple pond river bank structure. BACKGROUND

[0002] River bank management requires local conditions, safety and stability, ecological environmental protection, and currently, masonry retaining wall or slope protection is mostly used. With the improvement of environmental awareness, the requirement for river water quality is more stringent, and some farmland, residential areas and sewage treatment stations need to set up ecological ponds to further degrade and absorb pollutants. However, the scarcity of land resources conflicts with the setting of ecological ponds, so it is necessary to find other spaces to set up ecological ponds. In addition, the creation of river bank park requires higher river bank management, and as many management methods as possible are needed to meet the landscape needs. SUMMARY

[0003] The utility model aims at solving the problem of land resource shortage and lack of beauty in existing river bank management.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A terraced field multiple pond river bank structure is characterized in that it comprises a plurality of layers of ecological ponds arranged in a stepped manner from top to bottom, the ecological ponds are surrounded by retaining walls, the ecological ponds in the upper layer are connected to the ecological ponds in the next layer through first overflow ports, the ecological ponds in the top layer are provided with sedimentation tanks, the sedimentation tanks are connected to the ecological ponds in the top layer through filter dams, and water purification and soil fixation systems are arranged in the ecological ponds.

[0006] The water purification and soil fixation system comprises a clay layer arranged at the bottom of the ecological pond for anti-seepage, a scouring prevention layer arranged above the anti-seepage layer for anti-scouring, and a sand layer arranged above the scouring prevention layer for planting aquatic plants.

[0007] Further improvements are that the anti-seepage layer is a clay layer, the sand layer is a sandy soil layer, and the scouring prevention layer is a dry block stone or pebble layer.

[0008] Further improvements are that the thickness of the anti-seepage layer is not less than 300 mm, the thickness of the sand layer is not less than 300 mm, and the thickness of the scouring prevention layer is not less than 300 mm.

[0009] Further improvements are that a sand filter layer is arranged in the middle of the filter dam, gravel filter layers are arranged on both sides of the sand filter layer, and gabion baskets are arranged outside the gravel filter layers.

[0010] Further improvements are that the sand filter layer and the gravel filter layer are wrapped with geotextile.

[0011] Further improvement is that the retaining wall is a dry masonry structure, and a footpath is arranged on the top of the retaining wall.

[0012] Further improvement is that each of the ecological ponds comprises at least one sub-ecological pond, and adjacent sub-ecological ponds are communicated through a second overflow port.

[0013] After the above technical scheme is adopted, the following beneficial effects are achieved compared with the prior art:

[0014] The terraced pond riverbank treatment method is used on a gentle slope riverbank, the riverbank is treated, a plurality of ecological ponds are arranged to form a wetland effect, the residence time of water bodies entering the river is increased, the water quality purification effect is improved, and the river is less polluted by the water bodies entering the river; the aquatic plants are planted in the ecological ponds, the riverbank and the surrounding environment are beautified; the water flow speed is reduced by the filter dam, the water bodies entering the river are preliminarily filtered, and the garbage and sediments are conveniently cleaned up. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of not paying creative labor.

[0016] Fig. 1 is a plan structure schematic view of the present application;

[0017] Fig. 2 is a cross-sectional structure schematic view of the present application;

[0018] Fig. 3 is a structure schematic view of the filter dam in the present application.

[0019] Legend: retaining wall 1, filter dam 2, sedimentation tank 3, first overflow port 4, second overflow port 41, ecological pond 5, sub-ecological pond 51, impermeable layer 6, sand application layer 7, anti-scour layer 8, aquatic plant 9, check dam stone cage 10, gravel filter layer 11, sand filter layer 12. DETAILED DESCRIPTION

[0020] Reference Figs. 1-3The technical scheme adopted in the embodiment is shown as follows: a terraced field type multi-pond river bank structure, comprising a plurality of ecological ponds 5 arranged in a stepped manner from top to bottom, the ecological ponds 5 being surrounded by retaining walls 1, the ecological pond 5 in the upper layer being connected to the ecological pond 5 in the next layer through a first overflow port 4, the ecological pond 5 in the top layer being provided with a sedimentation tank 3, the sedimentation tank 3 being connected to the ecological pond 5 in the top layer through a filter dam 2, and a water purification and soil fixation system being arranged in the ecological pond 5.

[0021] The water purification and soil fixation system comprises an anti-seepage layer 6 arranged at the bottom of the ecological pond 5 for preventing seepage, an anti-erosion layer 8 arranged above the anti-seepage layer 6 for preventing erosion, and a sand layer 7 arranged above the anti-erosion layer 8 for planting aquatic plants 9.

[0022] The anti-seepage layer 6 is a clay layer, the sand layer 7 is a sandy soil layer, and the anti-erosion layer 8 is a dry block stone or pebble layer.

[0023] The thickness of the anti-seepage layer 6 is not less than 300 mm, the thickness of the sand layer 7 is not less than 300 mm, and the thickness of the anti-erosion layer 8 is not less than 300 mm.

[0024] The water purification and soil fixation system comprises aquatic plants 9 planted in the ecological pond 5 and herbivorous animals fed in the ecological pond.

[0025] The aquatic plants 9 are emergent plants and submerged plants, the herbivorous animals are grass carp, silver carp, river clams or snails, the submerged plants are cabomba or naiad, and the emergent plants are alisma, canna or zantedeschia. The local oxygen content can be increased by constructing a regional ecological system through the cooperation of the herbivorous animals, the emergent plants and the submerged plants. The emergent plants and the submerged plants have the effects of soil fixation, purification and beauty.

[0026] The filter dam 2 is provided with a sand filter layer 12 in the middle, the sand filter layer 12 is provided with gravel filter layers 11 on both sides, and the gravel filter layers 11 are provided with gabion 10 outside.

[0027] The sand filter layer 12 and the gravel filter layers 11 are wrapped with geotextile. The filter dam 2 can slow down the flow rate of water flow, perform preliminary filtration, make the incoming water body deposit, and facilitate the cleaning of garbage and sediments.

[0028] The retaining wall 1 is a dry masonry structure, and the top of the retaining wall 1 is provided with a footpath. The retaining wall 1 cooperates with the footpath to facilitate personnel introduction, the retaining wall 1 has water impermeability, the retaining wall 1 needs a certain burial depth to meet the requirements of stability and erosion prevention, and the retaining wall 1 needs to be arranged in combination with the terrain to achieve natural coordination.

[0029] Each of the ecological ponds 5 comprises at least one sub-ecological pond 51, and adjacent sub-ecological ponds 51 are connected by a second overflow port 41.

[0030] The working principle of the utility model is: when using, the multi-stage retaining wall is arranged in the gentle slope river section, the ecological pond is arranged between the upper and lower retaining walls, the aquatic plants are planted in the ecological pond, the multi-stage retaining wall can play a role of bank protection, the aquatic plants planted in the ecological pond can degrade and absorb pollutants and also can play a role of beautifying the environment, the retaining wall is arranged along the shape and situation, and plays a role of ecological nature, this treatment method can solve the problems of land shortage and slope treatment ecological landscape demand; the sedimentation tank is connected with the top ecological pond through the filter dam, the water flow velocity is slowed down through the filter dam, preliminary filtration is carried out, the water body is allowed to deposit, and garbage and deposits are convenient to clean; the water of the upper ecological pond flows into the lower ecological pond through the overflow port, the aquatic plants planted in the ecological pond can purify water quality, the wetland effect is formed by arranging multiple ecological ponds, the water body can increase the time of being detained in the pond, and then the effect of purifying water quality by the aquatic plants can be improved.

[0031] The basic principle and main features of the utility model and its advantages are shown and described above, and the skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the description are only for illustrating the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall into the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the appended claims and equivalents thereof. The utility model is not described in detail, and all are the known technology of the skilled in the art.

Claims

1. A terraced multi-pool riverbank structure, characterized by: The ecological pond comprises several ecological ponds arranged in a stepped manner from top to bottom, and the ecological ponds are surrounded by retaining walls; the upper ecological pond is connected with the next lower ecological pond through a first overflow port; the top ecological pond is provided with a sedimentation tank which is connected with the top ecological pond through a filter dam; and a water purification and soil fixation system is arranged in the ecological pond. The water purification and soil fixation system comprises a seepage-proof layer arranged at the bottom of the ecological pond for preventing seepage; a scour-proof layer arranged above the seepage-proof layer for preventing scour; and a sand layer arranged above the scour-proof layer for planting aquatic plants.

2. The terrace-mimicking multi-pool riverbank structure according to claim 1, characterized in that: The seepage-proof layer is a clay layer, the sand layer is a sandy soil layer, and the scour-proof layer is a dry block stone or pebble layer.

3. The terrace-mimicking multi-pool riverbank structure according to claim 1, characterized in that: The thickness of the seepage-proof layer is not less than 300 mm, the thickness of the sand layer is not less than 300 mm, and the thickness of the scour-proof layer is not less than 300 mm.

4. The terraced multi-pool riverbank structure according to claim 1, characterized in that: A sand filter layer is arranged in the middle of the filter dam, gravel filter layers are arranged on both sides of the sand filter layer, and gabion stone cages are arranged outside the gravel filter layers.

5. The terraced multi-pool riverbank structure according to claim 4, characterized in that: The sand filter layer and the gravel filter layers are wrapped with geotextile.

6. The terraced multi-pool riverbank structure according to claim 1, characterized in that: The retaining walls are constructed by dry block stones, and a walking path is arranged on the top of the retaining walls.

7. The terraced multi-pool riverbank structure according to claim 1, characterized in that: Each ecological pond comprises at least one sub-ecological pond, and adjacent sub-ecological ponds are connected through a second overflow port.

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