An ecological restoration system for lakeside belts of urban lakes

Abstract

The utility model relates to the technical field of water ecological restoration, and in particular to an ecological restoration system for a lakeside zone of an urban lake, comprising an ecological slope protection and a hard slope protection, wherein the steel concrete foundation is fixedly arranged on the ground at the foot of the ecological slope protection, and the hard slope protection is fixedly arranged on the top of the steel concrete foundation, and the end of the steel concrete foundation away from the lake area and the end of the ecological slope protection close to the lake area are mutually supported to form a first bite structure; the cross-sectional form of the hard slope protection is a right-angled trapezoid, wherein the right-angled waist of the right-angled trapezoid is perpendicular to the lake surface, and the oblique waist and the end of the ecological slope protection close to the lake area are mutually supported to form a second bite structure; the utility model resists the invasion of lake water by arranging the hard slope protection, thereby improving the stability of the slope, and at the same time, by arranging the first bite structure and the second bite structure, the stability of the slope is further improved, thereby making the slope not easy to collapse, and better ensuring the effect of ecological restoration.

Description

Technical Field

[0001] The utility model relates to the technical field of water ecological restoration, in particular to an ecological restoration system for a lakeside zone of an urban lake. Background Art

[0002] The lakeshore is not only an important transition zone between water and land, but also a place for a variety of organisms to live and reproduce. It can also filter pollutants and reduce the amount of nutrients and harmful substances entering the lake, thereby purifying the water quality. Therefore, the restoration and protection of the lakeshore is a key link in the management of lake water environment.

[0003] The utility model with publication number CN215102282U discloses an in-situ ecological restoration structure for an erodible lakeside zone and a buffer zone, including a slope protection, a soil layer, a water pump and a baffle. The soil layer is provided to facilitate operators to plant plants, thereby achieving ecological restoration of the lakeside zone and the buffer zone to a certain extent. The baffle is provided for protection to reduce the long-term scouring and erosion of the slope protection and the soil layer by lake waves.

[0004] As mentioned above, the technical solution has achieved the goal of ecological restoration to a certain extent, but its slope structure adopts a traditional layered design, which has relatively poor stability. When subjected to long-term immersion in lake water and impact from waves, the slope is prone to collapse, thereby weakening the effect of ecological restoration. Utility Model Content

[0005] In view of this, the utility model proposes an urban lake lakeside ecological restoration system, which improves the stability of the slope by setting up a hard slope protection to resist the invasion of lake water. At the same time, by setting up a first bite structure and a second bite structure, the stability of the slope is further improved, thereby making the slope less likely to collapse, thereby better ensuring the effect of ecological restoration.

[0006] The technical solution of the utility model is achieved in this way:

[0007] The utility model provides an urban lakeside ecological restoration system, including ecological slope protection and hard slope protection, wherein:

[0008] The hard slope protection is arranged at the foot of the ecological slope protection;

[0009] It also includes a reinforced concrete foundation, where

[0010] The steel concrete foundation is fixedly arranged on the ground at the foot of the ecological slope protection, the hard slope protection is fixedly arranged on the top of the steel concrete foundation, and the end of the steel concrete foundation away from the lake area and the end of the ecological slope protection close to the lake area are mutually supported to form a first bite structure;

[0011] The cross-section of the hard slope protection is a right-angled trapezoid, wherein the right-angled waist of the right-angled trapezoid is perpendicular to the lake surface, the lower base is parallel to the lake surface and moves toward the direction of the ecological slope protection, and the oblique waist and the end of the ecological slope protection close to the lake area are mutually supported to form a second bite structure.

[0012] On the basis of the above technical solution, preferably, the cross-section of the ecological slope protection is a triangle.

[0013] On the basis of the above technical solution, preferably, a notch is provided at the bottom of the ecological slope protection close to the lake area, and the top of the steel concrete foundation away from the lake area is embedded in the notch.

[0014] On the basis of the above technical solution, preferably, a protrusion is fixedly provided at the bottom of the steel concrete foundation and at the side close to the lake area.

[0015] On the basis of the above technical solution, preferably, a plain concrete cushion layer is poured at the bottom of the steel concrete foundation, and the plain concrete cushion layer is poured on the ground at the foot of the ecological slope protection.

[0016] On the basis of the above technical solution, preferably, the bottom of the ecological slope protection close to one end of the lake area supports the plain concrete cushion layer.

[0017] On the basis of the above technical solution, preferably, it also includes geotextile, wherein,

[0018] The geotextile is fixedly arranged between the ecological slope protection and the hard slope protection.

[0019] On the basis of the above technical solution, preferably, it also includes a steel concrete top, wherein:

[0020] The steel concrete cap is placed on the top of the hard slope protection.

[0021] Based on the above technical solution, preferably, the end of the steel concrete cap close to the lake area is vertically aligned with the end of the hard slope protection close to the lake area, and the end of the steel concrete cap away from the lake area is vertically aligned with the top of the hard slope protection close to the lake area.

[0022] On the basis of the above technical solution, preferably, it also includes a multi-level native plant belt, wherein:

[0023] The multi-level native plant belt is arranged on a side of the hard slope protection away from the ecological slope protection, and extends into the lake area in a stepped manner.

[0024] Compared with the prior art, the urban lakeside ecological restoration system of the utility model has the following advantages:

[0025] Beneficial effects:

[0026] (1) By setting up hard slope protection to resist the invasion of lake water, the stability of the slope is improved. At the same time, by setting up the first bite structure and the second bite structure, the stability of the slope is further improved, making the slope less likely to collapse, and better ensuring the effect of ecological restoration.

[0027] (2) By setting the cross-section of the ecological slope protection to a triangle, the structural stability of the ecological slope protection is better, which is conducive to the stability of the slope.

[0028] (3) By setting up a steel concrete top, it is easy to intercept water waves, making the ecological slope protection less likely to be impacted by water waves, which is beneficial to soil and water conservation within the ecological slope protection.

[0029] (4) By setting a protrusion at the bottom of the steel concrete foundation and fixing it on the side close to the lake area, and pouring a plain concrete cushion layer at the bottom of the steel concrete foundation, the stability of the hard slope protection can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the structure of an urban lakeside ecological restoration system of the utility model;

[0032] Figure 2 It is a partial structural schematic diagram of an urban lake shore ecological restoration system of the utility model;

[0033] Figure 3 It is a partial exploded diagram of an urban lake lakeside ecological restoration system of the utility model;

[0034] In the figure: 1. Ecological slope protection; 2. Hard slope protection; 3. Steel concrete foundation; 4. Geotextile; 5. Steel concrete top; 6. Multi-level native plant belt; 101. Notch; 301. Protrusion; 302. Plain concrete cushion. DETAILED DESCRIPTION

[0035] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figure 1-3 As shown, an urban lake shore ecological restoration system of the utility model includes an ecological slope protection 1, a hard slope protection 2, a steel concrete foundation 3, a steel concrete top 5 and a multi-level native plant belt 6.

[0037] Among them, the steel concrete foundation 3 is fixed on the ground at the foot of the ecological slope protection 1, and its foundation is a C30 steel concrete building with a thickness of 300mm. The hard slope protection 2 is fixed on the top of the steel concrete foundation 3, and the end of the steel concrete foundation 3 away from the lake area and the end of the ecological slope protection 1 close to the lake area are mutually supported to form a first bite structure.

[0038] In order to improve the stability of the steel concrete foundation 3, a protrusion 301 is fixedly provided at the bottom of the steel concrete foundation 3 and on the side close to the lake area. At the same time, a layer of C20 plain concrete cushion 302 with a thickness of 100 mm is poured at the bottom of the steel concrete foundation 3. The plain concrete cushion 302 is poured on the ground at the foot of the ecological slope protection 1. The shape of the plain concrete cushion 302 after curing matches the shape of the bottom of the steel concrete foundation 3.

[0039] The top elevation of the hard slope protection 2 is greater than or equal to the highest water level of the lake area. The hard slope protection 2 can be built with discarded blocks. The cross-section of the hard slope protection 2 is a right-angled trapezoid, in which the right-angled waist of the right-angled trapezoid is perpendicular to the lake surface, the lower bottom is parallel to the lake surface and approaches the direction of the ecological slope protection 1, and the inclined waist and the end of the ecological slope protection 1 close to the lake area support each other to form a second bite structure.

[0040] In order to prevent water waves from impacting the ecological slope protection 1, a C30 steel concrete capping 5 is placed on the top of the hard slope protection 2. When placed, the end of the steel concrete capping 5 close to the lake area is vertically aligned with the end of the hard slope protection 2 close to the lake area, and the end of the steel concrete capping 5 away from the lake area is vertically aligned with the top of the end of the hard slope protection 2 close to the lake area. The steel concrete capping 5 is used to intercept water waves, which can reduce the impact of water waves on the ecological slope protection 1, which is beneficial to the soil and water conservation of the ecological slope protection 1.

[0041] In the above structure, the hard slope protection 2, the steel concrete foundation 3 and the steel concrete capping 5 form a revetment retaining wall. The retaining wall has a simple structure, is easy to construct, can resist the invasion of lake water, improves the stability of the slope, makes the slope not easy to collapse, and better ensures the effect of ecological restoration.

[0042] The multi-level native plant belt 6 is set on the side of the hard slope protection 2 away from the ecological slope protection 1, and extends into the lake area in a stepped manner. Specifically, the multi-level native plant belt 6 is constructed when the water level in the lake area is low. The coastal ground in the lake area is dredged by dredging machinery. After dredging, clay is backfilled and compacted to form a Figure 1The stepped shape shown is then used to plant emergent plants on the clay, such as cattail, pickerel grass, dwarf Vallisneria, etc., with a planting density of 9 to 25 plants / m2. When the green plants grow up, the lake water submerges the emergent plants. The emergent plants can provide habitats for a variety of organisms, greatly improving the biodiversity of the lakeside zone.

[0043] The cross-section of the ecological slope protection 1 is triangular, with a notch 101 at the bottom close to the lake area. The top of the steel concrete foundation 3 away from the lake area is embedded in the notch 101, and the bottom of the ecological slope protection 1 close to the lake area is against the plain concrete cushion 302. Since the triangle is stable, the ecological slope protection 1 in this shape has better stability.

[0044] During the construction of the ecological slope protection 1, a slope is excavated on the lake embankment slope with a slope of 1:0.5. Then, a plain concrete cushion layer 302 and a steel concrete foundation 3 are poured from bottom to top at the foot of the slope. Then, a hard slope protection 2 is built on the top of the steel concrete foundation 3. After solidification, at least one layer of geotextile 4 is laid on the side of the hard slope protection 2 close to the slope. Then, earth is backfilled between the hard slope protection 2 and the slope. The ecological slope protection 1 and the hard slope protection 2 are separated by the geotextile 4. Then, the top of the earth is arranged into a slope with a slope of 1:2, and slope protection green plants are planted on the slope to improve the lakeside belt. Landscape conditions can also form a three-level interception system with the bank protection plants on the top of the slope and the near-shore wetland emergent plant belt, which can reduce the non-point source pollution entering the lake to a certain extent. That is: when non-point source pollution enters the lake, the polluted water must pass through the bank protection plants on the top of the ecological slope protection 1, the grass belt on the slope of the ecological slope protection 1, and the wetland emergent plant belt near the shore of the lake before it can finally enter the lake area. Through the plant's own metabolism, absorption, adsorption, interception and other methods, it can remove pollutants such as nitrogen, phosphorus and suspended matter in the polluted water to a certain extent, effectively reducing non-point source pollution.

[0045] The method of using the urban lake shore ecological restoration system of the utility model is as follows:

[0046] When the water level in the lake area is low, dredging machinery is used to dredge the coastal ground in the lake area. After dredging, clay is backfilled and arranged into a multi-step stepped shape and compacted. Then, emergent plants are planted on the clay. At the same time, excavation is carried out on the slope of the lake embankment. At the foot of the slope, a plain concrete cushion layer 302 and a steel concrete foundation 3 are poured from bottom to top in sequence. Then, a hard slope protection 2 is built on the top of the steel concrete foundation 3. After solidification, at least one layer of geotextile 4 is laid on the side of the hard slope protection 2 close to the slope, and earth is backfilled between the hard slope protection 2 and the slope. The top of the earth is arranged into a slope, and slope protection green plants are planted on the slope. Finally, a steel concrete capping 5 is placed on the top of the hard slope protection 2.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An urban lake shore ecological restoration system, comprising an ecological slope protection (1) and a hard slope protection (2), wherein: The hard slope protection (2) is arranged at the foot of the ecological slope protection (1); It is characterized in that it also includes a steel concrete foundation (3), wherein: The steel concrete foundation (3) is fixedly arranged on the ground at the foot of the ecological slope protection (1), the hard slope protection (2) is fixedly arranged on the top of the steel concrete foundation (3), and the end of the steel concrete foundation (3) away from the lake area and the end of the ecological slope protection (1) close to the lake area are mutually supported to form a first bite structure; The cross-section of the hard slope protection (2) is a right-angled trapezoid, wherein the right-angled waist of the right-angled trapezoid is perpendicular to the lake surface, the lower base is parallel to the lake surface and approaches the direction of the ecological slope protection (1), and the oblique waist and the end of the ecological slope protection (1) close to the lake area are mutually supported to form a second interlocking structure.

2. The urban lake shore ecological restoration system according to claim 1, characterized in that: The cross-section of the ecological slope protection (1) is triangular.

3. The urban lake shore ecological restoration system according to claim 2, characterized in that: A notch (101) is provided at the bottom of the ecological slope protection (1) on the side close to the lake area, and the top of the steel concrete foundation (3) on the side away from the lake area is embedded in the notch (101).

4. The urban lake shore ecological restoration system according to claim 3, characterized in that: A protrusion (301) is fixedly arranged at the bottom of the steel concrete foundation (3) and at a side close to the lake area.

5. The urban lake shore ecological restoration system according to claim 4, characterized in that: A plain concrete cushion layer (302) is poured at the bottom of the steel concrete foundation (3), and the plain concrete cushion layer (302) is poured on the ground at the foot of the ecological slope protection (1).

6. The urban lake shore ecological restoration system according to claim 5, characterized in that: The bottom of the ecological slope protection (1) close to one end of the lake area abuts against the plain concrete cushion layer (302).

7. The urban lake shore ecological restoration system according to claim 1, characterized in that: Also included is a geotextile (4), wherein: The geotextile (4) is fixedly arranged between the ecological slope protection (1) and the hard slope protection (2).

8. The urban lake shore ecological restoration system according to claim 1, characterized in that: It also includes a steel concrete top (5), wherein: The steel concrete top (5) is placed on the top of the hard slope protection (2).

9. The urban lake shore ecological restoration system according to claim 8, characterized in that: The end of the steel concrete capping (5) close to the lake area is vertically aligned with the end of the hard slope protection (2) close to the lake area, and the end of the steel concrete capping (5) away from the lake area is vertically aligned with the top of the end of the hard slope protection (2) close to the lake area.

10. The urban lake shore ecological restoration system according to claim 1, characterized in that: Also included are multiple levels of native plant belts (6), wherein: The multi-level native plant belt (6) is arranged on a side of the hard slope protection (2) away from the ecological slope protection (1), and extends into the lake area in a stepped manner.

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