Bank protection slope for river regulation

Abstract

A bank protection slope for river regulation comprises a foundation pit excavated in the side edge of a river; the gravel layer is backfilled in the foundation pit; the dike dam is arranged at the front end of the foundation pit and is arranged at the front end of the gravel layer; the revetment is arranged behind the dike dam, and aquatic plants are planted on the revetment; the protection mechanism is used for fixing aquatic plants; the revetment is arranged behind the revetment, and vegetation is arranged on the revetment; and the stepping stone walking path is arranged behind the protection slope. The large gentle slope is not smaller than 1 / 9, the flood discharge capacity of the river channel is not affected, and compared with a traditional hard revetment type, the large gentle slope ecological revetment is attractive, natural and good in ecological effect, and the flexible water control concept is highlighted; the shrubs, the ground covers and the lawns are combined to form three-dimensional plant ecological restoration, plant species are increased, and therefore abundant ecological plant communities are formed.

Description

TECHNICAL FIELD

[0001] The utility model relates to riverway harnessing technical field more specifically, especially relates to a revetment protection slope for riverway harnessing. BACKGROUND

[0002] In order to protrude flexible water control concept, at present, flood control and ecology are considered in riverway harnessing, and the riverbank protection slope of environmental indication is created in riverway harnessing, so that the riverway after harnessing forms ecological protection system.

[0003] The hard protection bank after the riverway harnessing can only be used for flood control, and the riverway ecology after harnessing is not considered. UTILITY MODEL CONTENT

[0004] The utility model provides a revetment protection slope for riverway harnessing to overcome the above-mentioned situation shortage, can create the ecological protection slope with ecology and flood control.

[0005] A revetment protection slope for riverway harnessing, comprising: a foundation pit excavated at the side of the riverway; a gravel layer backfilled in the foundation pit; a dike provided at the front end of the foundation pit, the dike being provided at the front end of the gravel layer; a revetment provided behind the dike, aquatic plants being planted on the revetment; a protection mechanism for fixing the aquatic plants; a protection slope provided behind the revetment, the protection slope being provided with vegetation; and a promenade provided behind the protection slope.

[0006] Further, the backfill compaction coefficient of the gravel layer is not less than 0.92.

[0007] Further, the dike comprises a plurality of gabion baskets, the front end of the dike is in a stepped shape, the gabion baskets are wrapped with geotextile, and the top of the dike is level with the gravel layer.

[0008] Further, the width of the revetment is between 0.5m and 1.5m, the surface of the revetment is provided with a plurality of pebbles, and a plurality of planting holes are formed between the pebbles.

[0009] Further, the top surface of the revetment is higher than the flood water level line.

[0010] Further, the protection mechanism comprises an extension cylinder, a positioning cylinder and a centralizer, the extension cylinder is arranged in the planting hole, the positioning cylinder is arranged at the top of the extension cylinder, the centralizer is rotationally connected to the top surface of the positioning cylinder, and the bottom of the aquatic plant penetrates the extension cylinder and the positioning cylinder.

[0011] Further, the side wall of the positioning cylinder is provided with a threaded piece, the threaded piece is screwed to the inner wall of the planting hole, the top surface of the positioning cylinder is provided with two operation holes, and the operation holes are used for inserting a tool to rotate the positioning cylinder.

[0012] Further, the two said centralizers are oppositely arranged, and the front end of the centralizer is provided with an auxiliary wheel which is attached to the water plant side wall.

[0013] Further, the slope of the slope is not less than 1 / 9, and the vegetation includes shrubs, ground cover and lawn.

[0014] Further, the stepping path is horizontally arranged, and a guardrail is arranged between the stepping path and the slope.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] ①The large gentle slope is not less than 1 / 9, and does not affect the river flood discharge capacity. Compared with the traditional hard revetment type, the large gentle slope ecological revetment is beautiful and natural, has good ecological effect, and highlights the flexible water control concept.

[0017] ②The shrubs, ground cover and lawn are combined to form a three-dimensional plant ecological restoration, increase plant species, and thus constitute a rich ecological plant community. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0019] Figure 1 It is a whole structure schematic view of a revetment protection slope for river regulation.

[0020] Figure 2 It is a schematic view of a protection mechanism in a revetment protection slope for river regulation.

[0021] In the drawing: 1, foundation pit; 2, gravel layer; 3, embankment; 31, gabion; 32, geotextile; 4, revetment; 41, aquatic plant; 42, pebble; 43, planting hole; 5, protection mechanism; 51, extension cylinder; 52, positioning cylinder; 521, threaded piece; 522, operation hole; 53, centralizer; 531, auxiliary wheel; 6, slope; 61, vegetation; 7, stepping path; 71, guardrail. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] As Figure 1 shown in the drawings, a revetment protection slope for river regulation includes a foundation pit 1 excavated on the side of the river, a gravel layer 2 backfilled in the foundation pit 1, a dike 3 arranged at the front end of the foundation pit 1, the dike 3 being arranged at the front end of the gravel layer 2, a revetment 4 arranged behind the dike 3, aquatic plants 41 being planted on the revetment 4, a protection mechanism 5 for fixing the aquatic plants 41, a slope 6 arranged behind the revetment 4, vegetation 61 being arranged on the slope 6, and a promenade 7 arranged behind the slope 6.

[0024] Before the river regulation, the two sides of the river are excavated first, and the silt soil with weak bearing capacity is replaced. After the silt soil is excavated, the foundation pit 1 is left, the depth of the foundation pit 1 is determined by the thickness of the subsequent gravel layer 2 to be supported, and the subsequent construction is carried out in the gravel layer 2. The compaction coefficient of the backfilled gravel layer 2 is not less than 0.92, the compacted gravel layer 2 has good bearing capacity, and also has some nutrients for plant growth in the gravel layer 2. The root system of the plant can grow and spread in the gravel layer 2, and the weight density of the gravel is large and not easy to be washed away by the water flow.

[0025] The dike 3 adopts a gravity type retaining wall, the dike 3 separates the river from the reconstructed revetment, the dike 3 stabilizes the slope body behind it, and reduces the water and soil loss of the gravel layer 2 and the revetment 4. The dike 3 includes a plurality of gabion stone cages 31, a plurality of gabion stone cages 31 are spliced with each other to complete the basic structure of the dike 3, the front end of the dike 3 is in a stepped shape, the outer layer of the gabion stone cage 31 is wrapped with geotextile 32, the geotextile 32 has a certain filtering function, can prevent larger particles of soil from entering the interior of the stone cage net, helps to keep the interior of the stone cage net unobstructed, and prevents impurities from damaging the structure of the stone cage net. The top of the dike 3 is level with the gravel layer 2, the large end surface of the dike 3 is in contact with the front end of the gravel layer 2, the dike 3 not only meets the requirements of flood discharge capacity, but also meets the needs of the construction of the revetment 4 behind it.

[0026] The revetment 4 is mainly used for preventing the influence of riverbed evolution on the ecological wetland beach. The revetment 4 is the part of water body in contact with land. The width of the revetment 4 is between 0.5m and 1.5m, and the specific width is determined according to the site condition. The surface of the revetment 4 is provided with a plurality of pebbles 42. The pebbles 42 are selected from the stones with good roundness. The pebbles 42 are dry-jointed on the gravel layer 2 by M10 mortar. A plurality of planting holes 43 are formed between the pebbles 42. The planting holes 43 penetrate the pebbles 42 and extend into the gravel layer 2 at the bottom. The planting holes 43 are filled with planting soil. The aquatic plants 41 are planted in the planting holes 43. The aquatic plants 41 are preferably Acorus calamus. The leaves, leaf sheaths, stems, rhizomes and adventitious roots of Acorus calamus all have aerenchyma, which plays an important role in purifying sewage. When the river channel has a gentle bank slope and a slow flow rate, the Acorus calamus will be laid down to cover the surface of the bank slope when the flood flows through. At the same time, the root system tightly bundles the soil to protect the river bank from erosion. The revetment 4 planted with the aquatic plants 41 and the pebble gaps can provide a place for fish and water birds to rest and reproduce.

[0027] The top surface of the revetment 4 is higher than the flood water level line. The revetment 4 plays a main role in water retention. The revetment 4 prevents the bank protection 6 from being impacted by the water flow to cause soil erosion and damage to the landscape of the bank protection 6.

[0028] The protection mechanism 5 is used for protecting the initial root growth of the aquatic plants 41 and preventing the aquatic plants 41 from being carried away by the water flow due to the underdeveloped root system in the early stage. As shown in Figure 2 The protection mechanism 5 includes an extension cylinder 51, a positioning cylinder 52 and a centralizer 53. The extension cylinder 51 is arranged in the planting hole 43. The outer diameter of the extension cylinder 51 is smaller than the diameter of the planting hole 43. The positioning cylinder 52 is arranged at the top of the extension cylinder 51. The diameter of the positioning cylinder 52 is the same as that of the planting hole 43. The centralizer 53 is rotationally connected to the top surface of the positioning cylinder 52. The front end of the centralizer 53 is located in the hollow part of the positioning cylinder 52. The bottom of the aquatic plant 41 penetrates the extension cylinder 51 and the positioning cylinder 52.

[0029] The side wall of the positioning cylinder 52 is provided with a threaded piece 521. The threaded piece 521 is screwed to the inner wall of the planting hole 43. The top surface of the positioning cylinder 52 is provided with two operation holes 522. The operation holes 522 are used for inserting a tool to rotate the positioning cylinder 52. When the positioning cylinder 52 and the extension cylinder 51 are installed, the extension cylinder 51 is first placed into the planting hole 43. Then the tool is inserted into the operation hole 522. The tool is further rotated to rotate the positioning cylinder 52. After the positioning cylinder 52 is rotated, the threaded piece 521 is embedded into the planting hole 43 to further fix the positioning cylinder 52 and the extension cylinder 51 in the planting hole 43. After the planting soil is added into the planting hole 43, the extension cylinder 51 is surrounded by the planting soil to enhance the stability. The aquatic plants 41 are planted in the planting soil.

[0030] Two righting devices 53 are oppositely arranged, the front end of the righting device 53 is provided with an auxiliary wheel 531, the two auxiliary wheels 531 are attached to the side wall of the aquatic plant 41, the auxiliary wheel 531 clamps the plant side wall, enhances the stability of the aquatic plant 41, when the plant grows, the righting device 53 can rotate upward with the aquatic plant 41, or the auxiliary wheel 531 rotates without affecting the growth of the aquatic plant 41, when the plant floats upward, the auxiliary wheel 531 can prevent the movement of the aquatic plant 41.

[0031] The slope of the slope protection 6 is not less than 1 / 9, the gentle slope form of the slope protection 6 can plant more vegetation 61, forms the scenery of the river channel surrounding management, the vegetation 61 includes shrubs, ground cover and lawn. The gentle slope does not affect the river channel flood discharge capacity, compared with the traditional hard type of bank protection, the ecological bank protection of large gentle slope is beautiful and natural, the ecological effect is good, and the flexible water control concept is highlighted. The shrubs, ground cover and lawn are combined to form a three-dimensional plant ecological restoration, increase plant species, so as to constitute a rich ecological plant community.

[0032] The stepping path 7 is horizontally arranged, the guardrail 71 is arranged between the stepping path 7 and the slope protection 6, the guardrail 71 separates the path and the slope protection 6, and the plants of the slope protection 6 can be protected when people appreciate the waterscape.

[0033] Finally, it should be noted that: the above only for the preferred embodiments of the utility model have described, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A bank protection slope for river regulation, characterized in that, include: The foundation pit excavated on the side of the river channel (1); Backfill the gravel layer (2) in the foundation pit (1); A retaining wall (3) is provided at the front end of the foundation pit (1), and the retaining wall (3) is provided at the front end of the gravel layer (2); A revetment (4) is provided behind the revetment (3), and aquatic plants (41) are planted on the revetment (4); Protective mechanism (5) for securing the aquatic plant (41); A retaining wall (6) is provided behind the revetment (4), and vegetation (61) is provided on the retaining wall (6); and A stepping stone walkway (7) is provided behind the slope protection (6).

2. The revetment slope for river channel improvement according to claim 1, characterized in that: The compaction coefficient of the backfilled gravel layer (2) shall not be less than 0.

92.

3. A riverbank protection slope for river regulation according to claim 2, characterized in that: The revetment (3) includes several gabion cages (31), the front end of the revetment (3) is stepped, the outer layer of the gabion cages (31) is wrapped with geotextile (32), and the top of the revetment (3) is at the same height as the gravel layer (2).

4. A riverbank protection slope for river regulation according to claim 3, characterized in that: The width of the revetment (4) is between 0.5m and 1.5m. The surface of the revetment (4) is provided with a number of pebbles (42), and a number of planting holes (43) are opened between the pebbles (42).

5. A riverbank protection slope for river regulation according to claim 4, characterized in that: The top surface of the revetment (4) is higher than the flood level.

6. A riverbank protection slope for river regulation according to claim 5, characterized in that: The protective mechanism (5) includes an extension tube (51), a positioning tube (52), and a straightener (53). The extension tube (51) is located inside the planting hole (43), the positioning tube (52) is located at the top of the extension tube (51), and the straightener (53) is rotatably connected to the top surface of the positioning tube (52). The bottom of the aquatic plant (41) passes through the extension tube (51) and the positioning tube (52).

7. A riverbank protection slope for river regulation according to claim 6, characterized in that: The side wall of the positioning cylinder (52) is provided with a threaded piece (521), which is screwed to the inner wall of the planting hole (43). The top surface of the positioning cylinder (52) is provided with two operating holes (522), which are used to insert tools to turn the positioning cylinder (52).

8. A riverbank protection slope for river regulation according to claim 7, characterized in that: The two stabilizers (53) are arranged opposite each other. The front end of the stabilizer (53) is provided with an auxiliary wheel (531), and the auxiliary wheel (531) is attached to the side wall of the aquatic plant (41).

9. A riverbank protection slope for river regulation according to claim 8, characterized in that: The slope of the slope protection (6) is not less than 1 / 9, and the vegetation (61) includes shrubs, ground cover and lawn.

10. A riverbank protection slope for river regulation according to claim 9, characterized in that: The stepping stone path (7) is set horizontally, and a guardrail (71) is provided between the stepping stone path (7) and the slope protection (6).

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