A gravity type sustainable ecological retaining wall design structure

Abstract

The utility model provides a kind of gravity type sustainable ecological retaining wall design structure belongs to geotechnical engineering technical field, comprising: waterproof unit, wall, support unit, spray layer and irrigation unit;The waterproof unit, support unit, irrigation unit and spray layer are all set on the wall;The waterproof unit is used to prevent the wall from seepage;The support unit is used to ensure the stability of the wall;The spray layer is used to enhance soil stability;The irrigation unit is used to ensure the moisture required for spray layer vegetation growth.The utility model adopts above-mentioned a kind of gravity type sustainable ecological retaining wall design structure, the structure not only has retaining function, but also can realize automatic collection of rainwater, irrigation, while increasing greening in wall body, enhance ecological benefits.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering technology, and in particular to a gravity-type sustainable ecological retaining wall design structure. Background Technology

[0002] In the field of geotechnical engineering, traditional retaining wall structures mainly use reinforced concrete. Although they have good stability and load-bearing capacity, they also have a series of problems such as significant ecological impact, poor soil and water conservation, and high maintenance costs. Traditional concrete structures damage the surrounding ecological environment, lack greening functions, and without vegetation cover, they are prone to soil erosion. Furthermore, vegetation and water management rely on manual maintenance, which is costly.

[0003] Currently, Chinese patent application CN112726644A discloses a prefabricated green ecological retaining wall and its construction method. This patent uses a prefabricated structure to replace traditional concrete pouring, reducing the amount of concrete used and taking ecological benefits into account. However, the prefabricated construction of this patent requires certain mechanical equipment and site conditions to complete operations such as hoisting prefabricated components, making the construction steps relatively complex. Chinese patent CN107299646B discloses a gravity retaining wall construction structure. This patent uses rubble as the wall structure, which is more expensive than fluidized solidified soil, resulting in relatively high construction and maintenance costs, making it less economical. Chinese patent CN202543951U discloses a flexible surface soil nailing wall combined with reinforced soil ecological support system. This patent utilizes an automatic irrigation system, achieving automatic irrigation. However, the automatic irrigation device cannot automatically replenish water according to the soil moisture content, potentially leading to over- or under-irrigation. Furthermore, the irrigation system is separated from the support structure, resulting in high maintenance costs. Chinese patent CN1284740C, authorized by the patent, discloses a hydroseeding substrate for ecological restoration of exposed rock slopes and its preparation method. The patent does not specify the curing time of the hydroseeding layer, and the curing ability depends on the physical properties of the fiber structure and does not have rapid curing properties. At the same time, polyester fibers or polyvinyl chloride fibers are non-degradable, have poor ecological adaptability, and are not conducive to sustainable development. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a gravity-type sustainable ecological retaining wall design structure. This structure not only has the function of retaining soil, but also realizes the automatic collection and irrigation of rainwater, while adding greenery to the wall body to enhance ecological benefits.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] A gravity-type sustainable ecological retaining wall design structure includes: a waterproof unit, a wall body, a support unit, a hydroseeding layer, and an irrigation unit; the waterproof unit, support unit, irrigation unit, and hydroseeding layer are all installed on the wall body; the waterproof unit is used to prevent water seepage into the wall body; the support unit is used to ensure the stability of the wall body; the hydroseeding layer is used to enhance soil stability; and the irrigation unit is used to ensure the water required for the growth of vegetation in the hydroseeding layer.

[0007] Preferably, the wall is composed of fluidized solidified soil; the outer surface of the wall is a serrated surface to improve surface adhesion.

[0008] Preferably, the support unit is disposed inside the wall, and the support unit includes a plurality of brackets, which are evenly arranged in the wall to ensure the structural stability of the wall.

[0009] Preferably, the waterproof unit is disposed on the outer surface of the wall, and the waterproof unit includes a waterproof membrane and an asphalt coating. The waterproof membrane is disposed at the bottom of the wall; the asphalt coating is disposed on the back and top of the wall to prevent water seepage from the wall.

[0010] Preferably, the spraying layer is disposed on the outer surface of the wall, and the spraying layer is used to achieve vegetation coverage and soil and water conservation on the wall.

[0011] Preferably, the irrigation unit includes a rainwater collector, which is installed in the soil outside the wall to collect rainwater; a drainage ditch is provided on the top of the rainwater collector to drain rainwater into the rainwater collector; and a water inlet pipe is installed at one end of the rainwater collector to draw rainwater out of the rainwater collector.

[0012] Preferably, an automatic irrigation device is connected to the other end of the water pipe relative to the rainwater collector. The part of the automatic irrigation device connected to the water pipe is a PVC pipe to ensure the sealing of the joint. The automatic irrigation device is located inside the hydroseeding layer.

[0013] Preferably, a water flow control component is provided at one end of the water inlet of the automatic irrigation device; the water flow control component includes a pressure device, a rubber ball is installed at the bottom of the pressure device, and a spring is installed longitudinally inside the rubber ball, and the water flow rate is controlled by the cooperation between the pressure device and the rubber ball; the connection between the automatic irrigation device and the water flow control component is an elastic waterproof membrane.

[0014] According to the specific embodiments provided by this utility model, the following technical effects are disclosed:

[0015] (1) This utility model forms a double waterproof barrier by combining a waterproof membrane and an asphalt coating, which effectively blocks water from penetrating the wall from the bottom and back, avoids water erosion of the internal structure of the wall, reduces the probability of cracking and collapse of the wall due to water seepage, and improves the durability and service life of the wall.

[0016] (2) In the irrigation unit of this utility model, the rainwater collector and the drainage ditch work together to collect rainwater, which is then transported to the automatic irrigation device by gravity through the water pipe. The PVC pipe interface of the automatic irrigation device ensures the sealing of the water flow process. The water flow control component controls the water flow rate through the cooperation of the pressure device and the rubber ball. When the soil pressure increases, the pressure device moves downward, compressing the rubber ball to a film state, thereby blocking the water flow. When the soil pressure decreases, the pressure device resets upward, and the spring drives the rubber ball to return to its original state, and the water flows out again through the drainage outlet for irrigation. This allows the automatic irrigation device to automatically adjust the irrigation according to the soil moisture content, saving water resources. The elastic impermeable membrane ensures that there is no water leakage at the connection, provides the water required for the growth of the hydroseeded vegetation, makes full use of rainwater resources, reflects sustainability, saves water resources, ensures the good growth of the hydroseeded vegetation, and promotes the hydroseeded layer to play its function of enhancing soil stability.

[0017] (3) The wall of this utility model is made of fluidized solidified soil, which realizes the secondary utilization of solid waste, reduces carbon emissions, realizes the recycling of resources, and meets the requirements of low-carbon and environmental protection. The sprayed layer on the outside of the wall can improve the road landscape, increase biodiversity, and enhance ecological benefits.

[0018] (4) By combining structural stability, ecological greening and automatic irrigation functions, this utility model solves the problems of serious ecological damage and high maintenance costs of traditional retaining walls. It is widely applicable to engineering fields such as roads, mountains, and rivers, and realizes the organic combination of ecological protection and engineering functions. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of a gravity-type sustainable ecological retaining wall design for this utility model;

[0021] Figure 2 A schematic diagram of the overall structure of the automatic irrigation device provided for the design structure of a gravity-type sustainable ecological retaining wall of this utility model;

[0022] Figure 3 A schematic diagram of the test cross-sectional structure of the automatic irrigation device provided for the design structure of a gravity-type sustainable ecological retaining wall of this utility model.

[0023] Figure 4 A schematic diagram of the water flow control component provided for the design structure of a gravity-type sustainable ecological retaining wall according to this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Wall; 2. Waterproof membrane; 3. Asphalt coating; 4. Support frame; 5. Water inlet pipe; 6. Automatic irrigation device; 7. Drainage ditch; 8. Rainwater collector; 9. Hydroseeding layer; 10. PVC pipe; 11. Inlet; 12. Pressure device; 13. Rubber ball; 14. Spring; 15. Elastic waterproof membrane; 16. Outlet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] like Figure 1 As shown, this utility model provides a gravity-type sustainable ecological retaining wall design structure, including: a waterproof unit, a wall body 1, a support unit, a hydroseeding layer 9, and an irrigation unit; the waterproof unit, support unit, irrigation unit, and hydroseeding layer 9 are all installed on the wall body 1; the waterproof unit is used to prevent water seepage from the wall body 1; the support unit is used to ensure the stability of the wall body 1; the hydroseeding layer 9 is used to enhance soil stability; and the irrigation unit is used to ensure the water required for the growth of vegetation in the hydroseeding layer 9.

[0030] Wall 1 is composed of fluidized solidified soil; the materials of wall 1 include sand and gravel, curing agent, limestone powder, admixtures, and water; the admixtures include calcium sulfoaluminate, polypropylene fiber, water-reducing agent, and organosilane emulsion; the mass ratios of each component are as follows: sand and gravel 35%-45%, curing agent 25%-35%, limestone powder 5%-10%, calcium sulfoaluminate 1%-2%, polypropylene fiber 0.2%-0.5%, water-reducing agent 0.1%-0.2%, organosilane emulsion 0.5%-1.0%, and water is added according to the actual project requirements; the outer surface of wall 1 has a serrated surface to improve surface adhesion.

[0031] The support unit is set inside the wall 1. The support unit includes several brackets 4, which are evenly arranged in the wall 1 to ensure the structural stability of the wall 1. In this embodiment, the brackets 4 can temporarily fix the position of the (oil-soaked) bamboo reinforcement.

[0032] A waterproof unit is installed on the outer surface of the wall 1. The waterproof unit includes a waterproof membrane 2 and an asphalt coating 3. The waterproof membrane 2 is installed at the bottom of the wall 1. The asphalt coating 3 is installed on the back and top of the wall 1 to prevent water seepage from the wall 1.

[0033] The hydroseeding layer 9 is applied to the outer surface of wall 1. This layer possesses the low-strength, rapid-setting characteristics and long-term water absorption and retention properties of neutral soil. The hydroseeding layer 9 comprises soil matrix, organic matter, straw, fertilizer, antibacterial agent, and seeds, with the following mass ratios: soil matrix 88%-92%, organic matter 3%-4%, straw 2%-3%, fertilizer 0.1%-0.2%, antibacterial agent 0.1%-0.2%, and seeds added as needed. This soil is a mixture of dry sand and clay, with large particles larger than 2mm removed by sieving. The soil pH is adjusted to neutral by adding superphosphate to ensure plant growth. Simultaneously, crushed straw, compound fertilizer, and antibacterial agent are mixed in to improve the soil environment and ensure plant development. The low-strength, rapid-setting components have the following mass ratios: ordinary silicate cement 0.5%-0.1%, calcium chloride 0.02%-0.03%. Ordinary silicate cement is used as a binder to provide a certain strength, while calcium chloride acts as a quick-setting agent to achieve curing in a short time, meeting the initial forming requirements of the sprayed layer 9. Long-term water absorption and retention properties are achieved synergistically through a water-absorbing agent and a flocculant, with the components comprising: 0.1%-0.2% water-absorbing agent and 0.1%-0.2% flocculant. The water-absorbing agent uses a modified starch-based water-absorbing material that is biodegradable and releases water slowly; the flocculant increases the porosity of the soil matrix, working together to ensure long-term water retention capacity.

[0034] The irrigation unit includes a rainwater collector 8, which is installed in the soil outside the wall 1 to collect rainwater. A drainage ditch 7 is installed on top of the rainwater collector 8 to drain rainwater into it. A water inlet pipe 5 is installed at one end of the rainwater collector 8 to draw rainwater out of the collector. An automatic irrigation device 6 is connected to the other end of the water inlet pipe 5 relative to the rainwater collector 8. The connection between the automatic irrigation device 6 and the water inlet pipe 5 is a PVC pipe 10 to ensure a tight seal at the joint. The water inlet pipe 5 allows rainwater from the rainwater collector 8 to flow into the automatic irrigation device 6 under gravity. The automatic irrigation device 6 is located inside the hydroseeding layer 9. A water flow control component is installed at one end of the inlet 11 of the automatic irrigation device 6. The water flow control component includes a pressure device 12, a rubber ball 13 installed at the bottom of the pressure device 12, and a spring 14 installed longitudinally inside the rubber ball 13. The water flow rate is controlled by the interaction between the pressure device 12 and the rubber ball 13. The connection between the automatic irrigation device 6 and the water flow control component is an elastic impermeable membrane 15. When the soil pressure increases, the pressure device 12 moves downward, compressing the rubber ball 13 to a thin film state, thereby blocking the water flow. When the soil pressure decreases, the pressure device 12 returns to its original position, the spring 14 drives the rubber ball 13 to return to its original state, and the water flows out again through the outlet 16 for irrigation.

[0035] Instructions for Use: Staff should conduct a detailed site survey to understand the geological and hydrological conditions and ensure the rationality of the design. First, lay a waterproof membrane 2 at the bottom of wall 1 according to the design requirements, using adhesive to join the joints to ensure seepage prevention. Next, erect the formwork for wall 1 and lay the water pipe 5 according to the design requirements, while simultaneously fixing the position of the support 4. Mix the required materials for wall 1 evenly according to the proportions, adding water as needed and stirring to form a fluidized solidified soil. Pour the fluidized solidified soil in layers, each 30-50cm thick, ensuring the next layer reaches 75% strength before pouring. After pouring, perform appropriate curing to form wall 1. Apply an asphalt coating 3 evenly to the back of wall 1 for waterproofing. Then, use a rammed earth machine to compact the backfill soil in layers, with each compacted layer typically 15-30cm thick. After backfilling, install a rainwater collector 8 at the top, ensuring successful connection to the water pipe 5. Apply an asphalt coating 3 evenly to the top of wall 1 for seepage prevention, ensuring a seepage-proof effect. A small hydraulic breaker is used to treat the surface of the wall 1, and a pneumatic chisel is used to treat the surface of the wall 1 into a sawtooth shape to improve the adhesion of the sprayed layer 9, while taking care to avoid the support 4; an automatic irrigation device 6 is installed, and the automatic irrigation device 6 is connected to the water pipe 5 through a PVC pipe 10 to ensure that there is no water leakage at the joint. Add soil substrate, organic matter, crushed straw, fertilizer, antibacterial agent, water absorbent, granulating agent, and water sequentially to the mixing tank of the hydroseeding equipment, and continue stirring until homogeneous. Then add ordinary silicate cement and calcium chloride as binders and quick-setting materials, and continue stirring to form a homogeneous slurry-like hydroseeding mixture. Adjust the pH by adding an appropriate amount of superphosphate according to the soil pH required for plant growth, maintaining the system within the neutral range. After completing the above mixing, add plant seeds, ensuring they are evenly distributed in the mixture. Use a high-pressure spray gun to spray evenly from top to bottom. Apply the hydroseeding in layers, controlling the thickness of each layer to 2-3 cm to ensure uniformity. Avoid spraying too thickly at once to prevent material collapse or poor adhesion due to its own weight, forming layer 9. After construction, cover the surface of layer 9 with non-woven fabric to retain soil moisture and promote rapid vegetation growth. Depending on actual needs, a drain pipe and a filter bag can be added. The drain pipe is installed inside wall 1 and runs through wall 1. The filter bag is installed at the rear of wall 1 and connected to the drain pipe. The filter bag absorbs excess water at the rear of wall 1 and discharges it through the drain pipe.

[0036] Therefore, the above-mentioned gravity-type sustainable ecological retaining wall design structure not only has the function of retaining soil, but also realizes the automatic collection and irrigation of rainwater, while adding greenery to the wall body to enhance ecological benefits.

[0037] This document uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. Furthermore, those skilled in the art will recognize that, based on the ideas of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A gravity type sustainable ecological retaining wall design structure, characterized by, include: The system comprises a waterproof unit, a wall, a support unit, a hydroseeding layer, and an irrigation unit; the waterproof unit, support unit, irrigation unit, and hydroseeding layer are all installed on the wall; the waterproof unit is used to prevent water seepage into the wall; the support unit is used to ensure the stability of the wall; the hydroseeding layer is used to enhance soil stability; and the irrigation unit is used to ensure the water required for the growth of vegetation in the hydroseeding layer.

2. The gravity-type sustainable ecological retaining wall design structure according to claim 1, characterized in that, The wall is composed of fluidized solidified soil; the outer surface of the wall is serrated to improve surface adhesion.

3. The gravity-type sustainable ecological retaining wall design structure according to claim 1, characterized in that, The support unit is disposed inside the wall and includes several brackets. The brackets are evenly arranged in the wall to ensure the stability of the wall structure.

4. The gravity-type sustainable ecological retaining wall design structure according to claim 1, characterized in that, The waterproof unit is disposed on the outer surface of the wall. The waterproof unit includes a waterproof membrane and an asphalt coating. The waterproof membrane is disposed at the bottom of the wall. The asphalt coating is disposed on the back and top of the wall to prevent water seepage.

5. The gravity-type sustainable ecological retaining wall design structure according to claim 1, characterized in that, The spraying layer is disposed on the outer surface of the wall, and the spraying layer is used to achieve vegetation coverage and soil and water conservation on the wall.

6. The gravity-type sustainable ecological retaining wall design structure according to claim 1, characterized in that, The irrigation unit includes a rainwater collector installed in the soil outside the wall to collect rainwater; a drainage ditch is provided on the top of the rainwater collector to drain rainwater into the rainwater collector; and a water inlet pipe is installed at one end of the rainwater collector to draw rainwater out of the rainwater collector.

7. The gravity-type sustainable ecological retaining wall design structure according to claim 6, characterized in that, The water inlet pipe is connected to an automatic irrigation device at the other end relative to the rainwater collector. The part of the automatic irrigation device connected to the water inlet pipe is a PVC pipe to ensure the sealing of the joint. The automatic irrigation device is located inside the hydroseeding layer.

8. The gravity-type sustainable ecological retaining wall design structure according to claim 7, characterized in that, A water flow control component is provided at one end of the water inlet of the automatic irrigation device; the water flow control component includes a pressure device, a rubber ball is installed at the bottom of the pressure device, and a spring is installed longitudinally inside the rubber ball. The water flow rate is controlled by the interaction between the pressure device and the rubber ball; the connection between the automatic irrigation device and the water flow control component is an elastic waterproof membrane.

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