Annular pool dike
By introducing fine sand slopes and multi-layered protective structures into the dike structure, combined with the design of anchor beams and vegetation bricks, the stability and seepage prevention performance of the ring dike in the desert region were solved, achieving long-term stability and efficient water resource management of the dike.
Patent Information
- Application Number
- CN202520231463.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Traditional dike designs are insufficient to meet the stability and seepage prevention requirements of dikes surrounding lakes in desert regions, especially under the influence of silty sand layers and permafrost layers, which makes it difficult for the dikes to meet the requirements for long-term use in terms of stability and seepage prevention performance.
A ring-shaped dike structure was designed, including a dike body and a protective slope. The water-facing side of the dike body is filled with a fine sand slope. The protective slope consists of a first buffer layer, a seepage-proof layer, a second buffer layer, a filter layer, and a concrete protective layer. The protective slope extends downward from a predetermined position of the fine sand slope to the bottom of the pool water and is reinforced by anchor beams and vegetation bricks. The slope ratio of the protective slope is 1:(2.3-2.7).
It improves the seepage prevention performance and stability of the surrounding dikes, prevents water seepage and soil displacement, enhances the dikes' resistance to impact, and ensures the long-term stable operation of the reservoir.
Smart Images
Figure CN223738548U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to embankment protection technical field, specifically, relate to a kind of ring pool embankment. BACKGROUND
[0002] In mining operations, it is inevitable to excavate groundwater. The storage and management of these water resources are crucial for the sustainable development of coal mining enterprises, especially in high-cold desert areas where water resources are scarce (such as the Mu Us Desert). In these areas, traditional groundwater discharge and storage methods for mining enterprises face many challenges. If groundwater discharge is not properly handled, it not only pollutes the surrounding environment, but also wastes water resources. Therefore, mining enterprises usually use excavated water storage pools to store groundwater. However, the construction of the ring pool embankment in the desert area is particularly complex, and it is necessary to fully consider the depth of frozen soil, geological structure, and unique requirements such as seepage prevention and frost prevention to ensure the long-term stability and reliable operation of the ring pool embankment.
[0003] Currently, common embankment designs mainly focus on water and protection functions. However, due to the unique geological conditions of desert areas, such as fine sand layers and permafrost layers, traditional embankment designs have not fully addressed the stability and seepage prevention needs of ring pool embankments in this region. In particular, in desert areas, fine sand layers are easily affected by water flow and environmental factors, making it difficult to meet long-term use requirements in terms of embankment stability and seepage prevention performance. SUMMARY
[0004] The problem solved by the utility model is how to improve the seepage prevention performance and stability of the ring pool embankment in the desert area.
[0005] To solve the above problems, the utility model provides a kind of ring pool embankment, including embankment and protection slope, the water surface of the embankment is filled with fine sand slope, the protection slope is fixed on the fine sand slope, the protection slope from below to above includes first buffer layer, seepage prevention layer, second buffer layer, filter layer and concrete protection layer, the first buffer layer is laid on the surface of the fine sand slope;
[0006] Among them, the protection slope extends downward from the preset position of the fine sand slope to the bottom of pool water, and the preset position is configured to be above the pool water surface.
[0007] Preferably, the slope ratio of the protection slope is 1:(2.3-2.7).
[0008] Preferably, the first buffer layer and the second buffer layer are both sand ash cushion layers, the seepage prevention layer is a composite geomembrane layer, and the filter layer is a geotextile layer.
[0009] Preferably, the sand ash ratio of the sand ash cushion layer is (3.8-4.2):1.
[0010] Preferably, the first anchoring beam is fixed at the bottom of the slope, and the second anchoring beam is fixed at the top of the slope.
[0011] Preferably, the bottom of the first anchoring beam is fixed on the surface of the pool water bottom, and the top of the first anchoring beam extends out of the concrete protection layer, the bottom of the second anchoring beam is fixed on the first buffer layer, and the top of the second anchoring beam extends out of the concrete protection layer.
[0012] Preferably, the top of the fine sand slope is provided with a third anchoring beam, and the second anchoring beam and the third anchoring beam are provided with vegetation bricks, which are laid on the surface of the fine sand slope by compact splicing.
[0013] Preferably, the thickness of the first buffer layer is 18-22 cm, the thickness of the second buffer layer is 33-37 cm, and the thickness of the concrete protection layer is 13-17 cm.
[0014] Preferably, the concrete protection layer is composed of a plurality of adjacent concrete protection layer units, and deformation joints are arranged between adjacent concrete protection layer units, and the deformation joints are continuously filled and caulked with asphalt mortar.
[0015] Preferably, the slope surface of the water-facing surface of the embankment is a stepped structure.
[0016] Compared with the prior art, the utility model has the beneficial effects that: the fine sand slope is filled on the water-facing surface of the embankment, which can provide basic support for the protection slope, and the protection slope extending from the preset position of the fine sand slope to the pool water bottom can effectively share the water flow erosion, ensuring the stability of the embankment in sandy soil. In addition, the design of the protection slope extending to the pool water bottom can make the embankment more firmly connected with the pool water bottom, avoiding the interaction or displacement of the soil layer, and improving the stability of the overall structure of the pool embankment; the protection slope sequentially includes a first buffer layer, an impermeable layer, a second buffer layer, a filter layer and a concrete protection layer from bottom to top, wherein the impermeable layer can effectively prevent the penetration of the pool embankment to the surrounding pool embankment, thereby improving the impermeability of the surrounding pool embankment; the first buffer and the second buffer on both sides of the impermeable layer avoid the direct contact of the concrete protection layer with the impermeable layer, avoiding the damage to the impermeable layer due to construction and the like, and improving the stability of the surrounding pool embankment through the arrangement of the impermeable layer; the design of the filter layer helps to filter the fine particles in the soil, which can prevent the fine sand particles from being carried out of the surrounding pool embankment by rain, thereby ensuring the overall stability of the surrounding pool embankment; the reinforcing effect of the concrete protection layer makes the surrounding pool embankment resistant to water flow impact, further improving the impermeability and stability of the surrounding pool embankment. The utility model can improve the impermeability and stability of the surrounding pool embankment. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 A structure diagram of the ring pool dike is provided for the embodiments of the present application.
[0018] The reference signs are as follows: 1, dike body; 2, protection slope; 21, first buffer layer; 22, impermeable layer; 23, second buffer layer; 24, filter layer; 25, concrete protection layer; 3, fine sand slope; 4, first anchoring beam; 5, second anchoring beam; 6, third anchoring beam; 7, vegetation brick. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0020] In this document, reference to“an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of other embodiments. Those skilled in the art will appreciate that embodiments described herein can be combined with other embodiments in various ways.
[0021] In the high-cold desert region, water resources are extremely valuable and scarce. For mining enterprises, the storage and discharge of groundwater is a long-term challenge. In mining operations (such as the production process of coal mining enterprises in coal mines), the excavation and treatment of groundwater is inevitable, and the drainage system of the mine often needs a large number of water storage pools to store and treat water resources, and the water storage pool needs to have the ability of long-term stable operation to ensure the efficient management of water resources and environmental protection.
[0022] In the related art, the traditional groundwater discharge and storage mode of coal mining enterprises in the high-cold desert region often faces the following problems: on the one hand, coal mining enterprises often face the problem of excessive or improper discharge of resources, which may cause surrounding land pollution or water resource waste, so the impermeability and stability of the ring pool dike need to be specially designed; on the other hand, the water storage pool in this region is prone to structural damage due to geological changes or frost heaving, which reduces the stability of the ring pool dike and causes water resource leakage.
[0023] To solve the above problems, with reference to Figure 1The utility model provides a kind of ring pool embankment, including embankment 1 and protective slope 2, the water face of embankment 1 is filled with fine sand slope 3, the protective slope 2 is fixed in fine sand slope 3, the protective slope 2 from below to above includes first buffer layer 21, impermeable layer 22, second buffer layer 23, filter layer 24 and concrete protective layer 25 in turn, the first buffer layer 21 is laid on the surface of fine sand slope 3;
[0024] Wherein, the protective slope 2 from the preset position of fine sand slope 3 extends to pool water bottom, the preset position is configured to be above pool water surface.
[0025] Specifically, embankment 1 is the external support structure of water storage pool, for supporting the whole ring pool embankment, to ensure that water storage pool can stably store and manage water resources.The water face of embankment 1 is filled with fine sand slope 3, to enhance the anti-scouring performance and stability of embankment;At the same time, the slope of fine sand slope 3 can be designed according to actual demand, to reduce the impact force of water flow, and avoid the collapse of ring pool embankment due to the erosion of water flow.
[0026] The protective slope 2 adopts five-layer structure, from below to above includes: first buffer layer 21, impermeable layer 22, second buffer layer 23, filter layer 24 and concrete protective layer 25.The first buffer layer 21 is laid on the surface of fine sand slope 3, for reducing the impact of water flow, reducing the direct effect of water flow on protective slope 2;Impermeable layer 22 is arranged on the first buffer layer 21, which can be prepared by using materials with durability, pressure resistance and impermeability, for preventing the penetration of water flow, avoiding the erosion of embankment 1 by water flow, and further improving the impermeability and stability of ring pool embankment;Second buffer layer 23 is arranged on the surface of impermeable layer 22, and the preparation material can be similar to the first buffer layer 21, but the thickness can be slightly larger than the first buffer layer 21, to provide stronger support performance, reduce the stress of lower impermeable layer 22, and the arrangement of second buffer layer 23 can avoid the direct contact of impermeable layer 22 and concrete protective layer 25, avoiding the damage to impermeable layer 22 caused by construction and other reasons;Filter layer 24 is mainly used for blocking fine sand in ring pool embankment, to prevent fine sand in ring pool embankment from being carried out by rainfall or pool water, thereby improving the stability of ring pool embankment;Concrete protective layer 25 is the uppermost layer of protective slope 2, for enhancing the stability and impact resistance of ring pool embankment.
[0027] The protective slope 2 extends from the preset position of fine sand slope 3 to pool water bottom, wherein, the preset position is above pool water surface, the preset position is determined by workers according to water pool water level change law, frozen soil depth and water flow impact intensity and other factors, and at the same time, the extension range of protective slope 2 needs to ensure the stability of pool bottom, and the pool bottom here refers to the pool bottom part of water storage pool.
[0028] It can be understood that the bottom of the reservoir can be paved with a protection surface identical to the structure of the protection slope 2 and closely connected with the protection slope 2 to avoid the seepage of the pool water from the pool bottom.
[0029] It can also be understood that the ring-pool embankment of the utility model can be used not only in the reservoirs in desert areas but also in the reservoirs in other soft geological areas.
[0030] Compared with the prior art, the utility model has the beneficial effects that: the fine sand slope 3 is filled on the water-facing surface of the embankment body 1, which can provide a foundation support for the protection slope 2, and the protection slope 2 extending from the preset position of the fine sand slope 3 to the pool water bottom can effectively share the water flow scouring, ensuring the stability of the embankment in sandy soil. In addition, the design that the protection slope 2 extends to the pool water bottom can make the embankment more firmly connected with the pool water bottom, avoiding the interaction or displacement of the soil layer, and improving the stability of the overall structure of the pool water embankment; the protection slope 2 sequentially comprises a first buffer layer 21, an anti-seepage layer 22, a second buffer layer 23, a filter layer 24 and a concrete protection layer 25 from bottom to top, wherein the anti-seepage layer 22 can effectively prevent the seepage from the inside of the reservoir to the ring-pool embankment, thereby improving the anti-seepage performance of the ring-pool embankment; the first buffer layer and the second buffer layer 23 located on both sides of the anti-seepage layer 22 avoid the direct contact between the concrete protection layer 25 and the anti-seepage layer 22, avoiding the damage to the anti-seepage layer 22 due to construction and the like, and improving the stability of the ring-pool embankment through the arrangement of the anti-seepage layer 22; the design of the filter layer 24 helps to filter the fine particles in the soil, which can prevent the fine sand particles from being carried out of the ring-pool embankment by rain, thereby ensuring the overall stability of the ring-pool embankment; the reinforcing effect of the concrete protection layer 25 makes the ring-pool embankment able to resist the water flow impact, further improving the anti-seepage performance and stability of the ring-pool embankment. The utility model can improve the anti-seepage performance and stability of the ring-pool embankment.
[0031] In an embodiment, the slope ratio of the protection slope 2 is 1:(2.3-2.7).
[0032] It needs to be explained that in the embodiment, the slope ratio of the protection slope 2 of the ring-pool embankment is designed to be 1:(2.3-2.7), that is, the ratio of the horizontal distance to the vertical height of the protection slope 2 is between 2.3 and 2.7. Since the high-cold area is mostly loose fine sand bottom layer with low shear strength, too steep slope surface may cause the collapse of the sand layer or the ring-pool embankment, so the slope ratio needs to be relatively gentle; when the slope ratio of the protection slope 2 is 1:(2.3-2.7), the direct impact of the water flow on the ring-pool embankment can be effectively reduced, and the erosion risk of the water flow to the ring-pool embankment is reduced, solving the problems of poor stability and insufficient protection of the traditional ring-pool embankment in similar environments.
[0033] Further, the first buffer layer 21 and the second buffer layer 23 are both sand mortar cushion layers, the anti-seepage layer 22 is a composite geomembrane layer, and the filter layer 24 is a geotextile layer.
[0034] Specifically, the first buffer layer 21 and the second buffer layer 23 are both made of sand mortar as the main material, and the first buffer layer 21 and the second buffer layer 23 made of sand mortar can improve the structural stability and construction convenience while ensuring good bearing capacity. Among them, the first buffer layer 21 is directly laid on the surface of the fine sand slope 3, and the main function is to uniformly disperse the stress on the fine sand slope 3 and reduce the damage to the embankment 1 caused by water flow impact. The second buffer layer 23 is located above the anti-seepage layer 22 and can uniformly distribute the pressure of the upper concrete protection layer 25 to avoid damage to the anti-seepage layer 22 caused by excessive stress concentration; the anti-seepage layer 22 adopts a composite geomembrane layer composed of high-density polyethylene (HDPE) and geotextile. On the one hand, the composite geomembrane layer can provide a seepage prevention function for the ring pool embankment to prevent water from penetrating into the embankment 1 through the protection slope 2; on the other hand, the composite geomembrane layer has high tensile strength and can adapt to the deformation caused by temperature difference in the ring pool embankment structure; the filter layer 24 is a geotextile layer. Since the pore size of the geotextile is uniform, it can prevent the fine sand of the ring pool embankment from being carried away in a rainfall environment or pool water scouring condition, thereby preventing the ring pool embankment from being eroded and causing a decrease in the stability of the ring pool embankment.
[0035] In one embodiment, the sand mortar cushion layer has a sand mortar ratio of (3.8-4.2):1.
[0036] Specifically, the sand mortar cushion layer is made according to a sand mortar ratio of (3.8-4.2):1. The sand mortar cushion layer configured in this ratio can balance the bearing capacity and structural stability, and is particularly suitable for the construction of ring pool embankments in high-cold desert areas.
[0037] In one embodiment, the protection slope 2 is provided with a first anchor beam 4 near one end of the pool water bottom, and a second anchor beam 5 near the other end of the predetermined position.
[0038] Specifically, the first anchoring beam 4 is arranged at one end of the protection slope 2 close to the bottom of the pool water, and is used to support the protection slope 2 to prevent the concrete protection layer 25 from sinking along the protection slope 2, thereby maintaining the structural stability of the protection slope 2. The cross section of the first anchoring beam 4 can be rectangular, and the size is set according to the size of the protection slope 2. The length of the first anchoring beam 4 can be consistent with the width of the protection slope 2. The first anchoring beam 4 is made of high-strength concrete (C30 and above), and is internally provided with a steel mesh to enhance the tensile strength. The second anchoring beam 5 can be arranged at a predetermined position of the protection slope 2, and the length of the second anchoring beam 5 can be consistent with the width of the protection slope 2. The second anchoring beam 5 is made of the same high-strength concrete as the first anchoring beam 4, and is also internally provided with a steel mesh to enhance the tensile strength. The second anchoring beam 5 can resist the top sliding of the protection slope and external force impact.
[0039] In the embodiment, the first anchoring beam 4 is embedded in the bedrock or fine sand layer at the bottom of the pool water to fix the bottom of the protection slope 2, thereby effectively preventing the protection slope 2 from sliding due to water pressure or gravity. The second anchoring beam 5 provides additional support force at the top area of the protection slope 2 to prevent the upper structure from being displaced or unstable due to external force (such as water flow impact). The two anchoring beams are closely combined with the layers of the protection slope 2 to form a whole force unit, which can effectively resist the external force under the special geological conditions in the high-cold desert area.
[0040] In one embodiment, the bottom of the first anchoring beam 4 is fixed to the surface of the bottom of the pool water, the top of the first anchoring beam 4 extends out of the concrete protection layer 25, the bottom of the second anchoring beam 5 is fixed to the first buffer layer 21, and the top of the second anchoring beam 5 extends out of the concrete protection layer.
[0041] It should be noted that the bottom of the first anchoring beam 4 is directly fixed to the base surface of the bottom of the pool water to ensure stable embedding. The top of the first anchoring beam 4 extends out of the concrete protection layer 25, and part of the structure is exposed to improve the reinforcement effect on the protection slope 2, and can also serve as a fulcrum for subsequent construction. The bottom of the second anchoring beam 5 is directly fixed to the first buffer layer 21 to ensure close combination with other layers of the protection slope 2. The top of the second anchoring beam 5 extends out of the concrete protection layer 25 to provide additional fixing force and enhance the support and anti-sliding ability of the top of the slope. The embodiment is suitable for pool embankment projects in desert and high-cold areas, especially in environments with high underground water level and deep frozen soil layer. By arranging the first anchoring beam 4 and the second anchoring beam 5, the stability of the embankment can be significantly improved to meet the long-term needs of water resource storage and management.
[0042] Further, the third anchoring beam 6 is arranged at the top of the fine sand slope 3, the second anchoring beam 5 and the third anchoring beam 6 are provided with vegetation bricks 7, and the vegetation bricks 7 are laid on the surface of the fine sand slope 3 by compact splicing.
[0043] It needs to be explained that the third anchoring beam 6 is arranged at the top of the fine sand slope 3, close to the water-facing edge of the embankment body 1, to ensure the fixation and reinforcement of the embankment top; the vegetation brick 7 is arranged between the second anchoring beam 5 and the third anchoring beam 6, and the vegetation brick 7 can be designed as a hollow brick with uniform specifications, and a vegetation space is left in the center of the vegetation brick 7 for planting lawn or plant root extension.
[0044] On the one hand, the vegetation brick 7 forms a continuous protective layer through close jointing, which can effectively reduce the erosion of water flow on the fine sand slope 3; on the other hand, the lawn or plants planted in the vegetation brick 7 help to fix the slope soil, while realizing the greening function and improving the ecological environment of the embankment.
[0045] In this embodiment, the vegetation brick 7 is arranged between the second anchoring beam 5 and the third anchoring beam 6, and a complete protection and greening system can be formed by planting plants on the vegetation brick 7, which effectively improves the anti-sliding capacity and durability of the pool-encircling embankment.
[0046] In one embodiment, the thickness of the first buffer layer 21 is 18-22 cm, the thickness of the second buffer layer 23 is 33-37 cm, and the thickness of the concrete protective layer 25 is 13-17 cm.
[0047] Specifically, the thickness of the first buffer layer 21 is set to 18-22 cm. This layer is mainly used to provide preliminary shock absorption and buffering effect to prevent direct damage to the upper structure when it is impacted by water flow; the thickness of the second buffer layer 23 is set to 33-37 cm. The role of this layer is to further enhance the buffering and compression resistance, especially in the case of large water level fluctuations in the pool, which can effectively alleviate the impact of water pressure on the embankment structure; the thickness of the concrete protective layer 25 is set to 13-17 cm. This layer is mainly used to provide external structural protection to avoid erosion of the water flow on the surface of the embankment, and to protect the long-term stability of the embankment; the filter layer 24 can use 200g / m2 of anti-filtration geotextile to prevent rainfall from carrying fine sand out of the fine sand embankment and causing instability of the embankment; the impermeable layer 22 can use a 1mm thick composite geomembrane to provide impermeable function for the pool-encircling embankment, avoid water infiltration through the protective slope 2 into the embankment body 1, and improve the impermeability and stability of the pool-encircling embankment.
[0048] Furthermore, since there is usually a lack of stone materials in the alpine desert area, the concrete protective layer 25 with a thickness of 13-17 cm is used in this embodiment to protect the pool-encircling embankment, which can effectively reduce the amount of stone used and reduce the engineering cost.
[0049] In one embodiment, the concrete protective layer 25 is composed of a plurality of adjacent concrete protective layer units, and a deformation joint is arranged between adjacent concrete protective layer units, and the deformation joint is continuously filled and caulked with asphalt mortar.
[0050] Specifically, the concrete protection layer is composed of a plurality of adjacent concrete protection layer units, each protection layer unit is connected through a deformation joint, the deformation joint is filled and caulked with asphalt mortar to cope with the thermal expansion and contraction effect of the ring pool embankment in temperature change and water level fluctuation, prevent cracks and water leakage problems caused by structural deformation; furthermore, the asphalt mortar has good adhesion and water resistance, can effectively prevent water from penetrating into the embankment structure through the deformation joint, further improve the anti-seepage performance of the ring pool embankment.
[0051] In an embodiment, the slope surface of the water-facing surface of the embankment body 1 is a stepped structure.
[0052] The embodiment adopts the stepped structure design for the water-facing surface of the embankment body 1, aims to enhance the stability of the embankment through the stepped slope surface design, can improve the dispersion effect of the water flow impact force, and improve the erosion resistance of the embankment.
[0053] Although the utility model discloses as above, the protection scope of the utility model is not limited to this only.The person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will all fall into the protection scope of the utility model.
Claims
1. A ringed cell dike characterized in that, The dam body (1) is filled with fine sand slope (3) on the water side, the protection slope (2) is fixed on the fine sand slope (3), the protection slope (2) from bottom to top includes first buffer layer (21), impermeable layer (22), second buffer layer (23), filter layer (24) and concrete protection layer (25), the first buffer layer (21) is laid on the surface of the fine sand slope (3); Wherein, the protection slope (2) extends from the preset position of the fine sand slope (3) to the bottom of the reservoir, and the preset position is configured to be above the pool water level of the reservoir.
2. A cell ring embankment according to claim 1, characterized in that The slope ratio of the protection slope (2) is 1:(2.3-2.7).
3. The ring cell levee according to claim 1, wherein, The first buffer layer (21) and the second buffer layer (23) are sand mortar cushion, the impermeable layer (22) is composite geomembrane layer, and the filter layer (24) is geotextile layer.
4. A cell ring embankment according to claim 3, characterised in that The sand mortar cushion has a sand mortar ratio of (3.8-4.2):
1.
5. The cell ring dike according to claim 1, wherein The protection slope (2) is provided with a first anchoring beam (4) near one end of the bottom of the reservoir, and a second anchoring beam (5) near the other end of the preset position.
6. A cell ring embankment according to claim 5, characterised in that The bottom of the first anchoring beam (4) is fixed on the bottom of the reservoir, the top of the first anchoring beam (4) extends out of the concrete protection layer (25), the bottom of the second anchoring beam (5) is fixed on the first buffer layer (21), and the top of the second anchoring beam (5) extends out of the concrete protection layer.
7. A cell ring embankment according to claim 5, wherein The top of the fine sand slope (3) is provided with a third anchoring beam (6), and the second anchoring beam (5) and the third anchoring beam (6) are provided with vegetation bricks (7) between them, which are laid on the surface of the fine sand slope (3) by compact splicing.
8. The ring cell levee according to claim 1, wherein, The thickness of the first buffer layer (21) is 18-22 cm, the thickness of the second buffer layer (23) is 33-37 cm, and the thickness of the concrete protection layer (25) is 13-17 cm.
9. The ring cell levee according to claim 1, wherein, The concrete protection layer (25) is composed of a plurality of adjacent concrete protection layer units, and a deformation joint is arranged between adjacent concrete protection layer units, and an asphalt mortar layer is filled in the deformation joint.
10. The cell ring dike according to claim 1, wherein The slope surface of the water side of the dam body (1) is a stepped structure.