A bio-glue-synergistic multi-solid waste muddy ecological slope and its construction and monitoring method

Abstract

The present invention relates to a bio-glue-coated multi-solid waste silt ecological slope and its construction and monitoring methods. The ecological slope comprises a slope base, and a first bio-glue adhesive layer, a solidified silt soil layer, a second bio-glue adhesive layer, and a nutrient soil planting layer, sequentially laminated on the slope base. Compared to existing technologies, this invention utilizes solidified silt as a river slope, solving the problem of silt utilization. Simultaneously, two layers of xanthan gum solution strengthen the connection between the slope foundation, the solidified silt soil layer, and the nutrient soil layer, enhancing the slope's stability and overall strength.

Description

Technical Field

[0001] The present invention belongs to the technical field of sludge treatment and ecological slope, and relates to a bio-glue synergistic multi-solid waste sludge ecological slope and a construction and monitoring method thereof. Background Art

[0002] Ecological slope protection, as an emerging technology, plays a vital role in protecting river slope structures and maintaining slope stability. Using solidified silt as a slope material can significantly improve slope stability. Through specific technical treatment, solidified silt possesses high strength and stability, effectively preventing erosion and damage, thereby enhancing the slope's resistance to landslides and collapses. Furthermore, the use of solidified silt improves slope soil conditions, providing a better foundation for vegetation growth, thereby achieving the dual effects of ecological restoration and environmental improvement.

[0003] In traditional ecological slope engineering, solidified silt is widely used as a slope material. Solidified silt is treated with a curing agent (such as cement, gypsum, or fly ash) to impart high strength and stability. However, in practice, the connection between solidified silt and the slope base is often weak, resulting in several issues that directly impact the overall stability of the slope: 1. Weakened interface: Solidified silt and the natural soil base often differ in physical properties, such as particle size, density, and moisture content. These differences result in a fragile interface that is susceptible to external forces or environmental changes. Under external influences such as rainfall and earthquakes, the interface may experience slippage and delamination, leading to slope instability. 2. Differences in permeability coefficients: Solidified silt typically has a low permeability coefficient, while natural soil has a high permeability coefficient. Under the influence of rainwater or groundwater, the migration rates of water between the soil and solidified silt are inconsistent, causing water to be trapped at the interface, forming a sliding surface and further exacerbating slope instability. 3. Stress Concentration Effect: The interface between solidified silt and the slope base is often an area of ​​stress concentration. Due to the different deformation characteristics of solidified silt and soil, stress concentration may occur at this interface when subjected to external loads (such as vehicle traffic or ground subsidence). This stress concentration can easily cause cracks or slippage, thereby reducing the slope's anti-slip stability. 4. Plant Root Interference: Slopes are often planted to enhance ecological benefits. However, plant roots penetrate both the solidified silt layer and the natural soil layer as they grow. This expansion and contraction of the roots can disturb the interface. Over time, this can cause the solidified silt to separate from the base or slip, thereby weakening the slope's structural stability. 5. Temperature Change Effect: Due to the different thermal expansion coefficients of solidified silt and natural soil, the interface between them can expand or contract unevenly when subjected to drastic temperature fluctuations (such as diurnal temperature fluctuations or seasonal changes). This phenomenon can trigger stress changes at the interface, leading to cracking or loosening of the interface, compromising the overall stability of the slope.

[0004] The use of traditional solidified silt materials in slope engineering presents numerous problems, particularly regarding the stability of the connection with the slope base. Therefore, there is an urgent need for a novel construction method to enhance the bonding strength of the solidified silt to the base, improve the overall stability of the slope, and reduce the risk of slope instability. This invention, by introducing bio-glue as an adhesive, proposes a novel layered construction method, significantly improving the bonding between the solidified silt and the base, thus addressing these issues. Summary of the Invention

[0005] The purpose of the present invention is to provide a bio-glue synergistic multi-solid waste silt ecological slope and its construction and monitoring method to overcome at least one of the existing solid waste, dredged silt treatment and utilization problems, and the defects of traditional solidified silt materials in the stability of the connection between the slope base.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] On the one hand, the present invention provides a bio-glue synergistic multi-solid waste silt ecological slope, including a slope base, and a first bio-glue bonding layer, a solidified silt soil layer, a second bio-glue bonding layer and a nutrient soil planting layer sequentially compounded on the slope base.

[0008] Furthermore, the first bio-glue adhesive layer and the second bio-glue adhesive layer are obtained by spraying a bio-glue solution formed by xanthan gum and water. Xanthan gum, as a bio-glue adhesive, mainly plays the role of enhancing the adhesion of the material and preventing erosion.

[0009] Furthermore, in the bio-glue solution, the mass fraction of the xanthan gum is 1.5-2.5%, which can significantly improve the corrosion resistance and overall stability of the solidified material.

[0010] Furthermore, the solidified silt soil layer is obtained by mixing dredged silt with a multi-solid waste solidifying agent, followed by spreading and compacting.

[0011] Furthermore, the multi-solid waste curing agent is made of solid waste, or a mixture of solid waste and xanthan gum;

[0012] When the multi-solid waste solidifier is made by mixing solid waste and xanthan gum, its component ratio is: 100-200 parts of carbide slag, 10-20 parts of cement, 10-20 parts of gypsum, and 5-15 parts of xanthan gum. This solidifier system can effectively solidify silt and improve the compressive strength and long-term stability of the slope.

[0013] When the multi-solid waste solidifying agent is composed of solid waste, its component ratio is 100-200 parts of slag and / or fly ash and 20-30 parts of carbide slag. This solidifying agent system can further enhance the solidification effect.

[0014] Furthermore, the initial moisture content of the dredged sludge is between 40% and 60%, and the dosage of the multi-solid waste solidifying agent is 9-15% of the mass of the dredged sludge.

[0015] Furthermore, the thickness of the solidified silt soil layer is 5 to 10 cm, and the thickness of the nutrient soil planting layer is 0.1 to 0.3 m.

[0016] Furthermore, the slope rate of the slope base is 1:0.75 to 1:1.

[0017] In a second aspect, the present invention provides a method for constructing a bio-glue-coordinated multi-solid waste muddy ecological slope, characterized in that it comprises the following steps:

[0018] S1. Clear the construction obstacles on the slope base, level it and compact it;

[0019] S2, preparing a bio-glue adhesive solution, and spraying it on the slope surface of the slope base to obtain a first bio-glue adhesive layer;

[0020] S3, taking the dredged sludge and the multi-solid waste solidifying agent, fully and quickly mixing them to obtain a solidified soil material, and spreading the solidified soil material on the slope base sprayed with the first bioadhesive adhesive layer in S2, and compacting the solidified soil material to form the solidified sludge layer;

[0021] S4, spraying a bio-glue adhesive solution onto the solidified silt soil layer compacted in S3 to obtain a second bio-glue adhesive layer;

[0022] S5. Covering the solidified silt soil layer sprayed with the second bioglue adhesive layer in S4 with nutrient soil to obtain the nutrient soil planting layer.

[0023] Furthermore, the prepared bio-glue adhesive solution is a xanthan gum aqueous solution with a mass fraction of 1.5-2.5%, and the spraying amount of S2 and S4 is 3-5 L / m 2 , preferably 4L / m 2 .

[0024] Furthermore, grass seeds may be sown on the nutrient soil planting layer, for example, tall fescue, ryegrass, etc.

[0025] In a third aspect, the present invention provides a monitoring method for ecological slopes involving bio-gel and multi-solid waste. Distributed fiber optic sensors are installed within the solidified silt soil layer to detect temperature, displacement, soil pressure, and strain. These sensors can measure stress and strain at every point on the slope, continuously monitoring soil strength and ensuring the stability and safety of the solidified silt slope throughout its lifecycle.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] (1) The muddy slope material described in this invention is made from solidified river silt, utilizing local silt resources to reduce silt treatment costs and utilizing the rich ecological substances in the silt to supplement slope nutrients. Compared with traditional slope materials, silt is less expensive and more environmentally friendly.

[0028] (2) The adhesive material of the present invention is a xanthan gum solution. Using xanthan gum as an adhesive strengthens the bond between the solidified soil material and the slope base. The xanthan gum effectively fills the pores between soil particles, forming a fibrous and reticular structure, enhancing the connectivity between soil layers, and organically integrating the solidified soil material with the slope base and nutrient soil into a single entity, thereby enhancing the overall stability of the slope and providing sufficient nutrition and a growth environment for subsequent vegetation cover. Simultaneously, the xanthan gum coating can effectively reduce the permeability coefficient, thereby improving the slope's resistance to water erosion and reducing soil and water loss.

[0029] (3) The curing agent of the present invention is solid waste. The curing agent is made of solid waste such as carbide slag, cement, gypsum, fly ash, slag, etc. The reactions between the above solid waste and dredged sludge are as follows:

[0030] Ca(OH)2+H2O→Ca 2+ +OH - (1)

[0031] Ca 2+ +OH - +CO2→CaCO3 (2)

[0032] SiO2 / Al2O3+Ca 2+ +OH - →CSH / CAH (3)

[0033] SO4 2- +CSH→AFt (4)

[0034] (4) The silt slope material described in the present invention is prepared by directly mixing the curing agent and silt at the construction site, without the need to dehydrate the silt. This is convenient and quick, reduces the cost of silt treatment, and improves the silt treatment effect and utilization rate.

[0035] (5) The ecological slope monitoring method provided by the present invention adopts distributed optical fiber for monitoring and deploys a distributed optical fiber sensing network on the site. Optical fiber sensing has the advantages of high sensitivity and strong anti-interference ability, and can accurately capture the dynamic changes of soil pressure, providing a basis for analyzing the formation of negative pressure seepage field. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The surface strength of the three construction sections in Example 1 varies with the zero period;

[0037] Figure 2 The variation trend of moisture content of the three construction sections in Example 1 with the zero period;

[0038] Figure 3 The pH value variation trends of the three construction sections in Example 1 with the zero period;

[0039] Figure 4 Schematic diagram of the construction of a slope surface using bio-glue in conjunction with multi-solid waste muddy ecological slopes according to the present invention;

[0040] Figure 5 This is a flow chart of the construction process of the bio-glue-coordinated multi-solid waste muddy ecological slope of the present invention.

[0041] Description of the marks in the figure:

[0042] 1-Biological glue bonding layer, 2-Solidified silt soil layer, 3-Nutritional soil planting layer, 4-Distributed optical fiber sensor. DETAILED DESCRIPTION

[0043] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0044] In order to overcome the existing problems of solid waste, dredged silt treatment and utilization, and the problems of stability in the connection between traditional solidified silt materials and slope base, the present invention provides a construction method for multi-solid waste silt ecological slope by using bio-glue in combination. Figure 1 and Figure 2 As shown, specifically including:

[0045] (1) River channel survey and silt sampling

[0046] First, a detailed on-site survey of the river channel where dredged silt exists and slope protection is required is conducted to comprehensively assess the environmental conditions. Subsequently, silt samples are collected and systematically analyzed and tested in the laboratory to determine the most appropriate curing agent ratio and dosage to ensure the stability and effectiveness of subsequent construction.

[0047] (2) Slope improvement

[0048] Before construction, clear all obstacles on the slope that could affect construction, such as weeds and rocks, to ensure a clean and tidy construction environment. Next, level the slope base and compact it using compaction equipment to enhance the slope's bearing capacity and stability, ensuring the slope gradient is within a range of 1:0.75 to 1:1.

[0049] (3) Adhesive preparation and spraying

[0050] Using the slow addition method, xanthan gum powder is gradually added to the stirring water to prepare a xanthan gum solution (mass fraction of about 1.5-2.5%). The solution is evenly sprayed on the surface of the slope base to form a bio-glue adhesive layer 1 to ensure good adhesion between subsequent construction materials and the base.

[0051] (4) Sludge solidification treatment

[0052] The mixed curing agent, according to the determined ratio, is transported to the construction site and thoroughly mixed with the silt using powerful mixing equipment to form a solidified soil material. The treated solidified soil is then evenly spread on the slope and compacted using compaction machinery to ensure the density and stability of the solidified silt soil layer 2.

[0053] (5) Spray adhesive again

[0054] A layer of xanthan gum solution (mass fraction of about 1.5-2.5%) is evenly sprayed on the surface of the compacted solidified silt to form another layer of bio-glue adhesive layer 1 to further enhance the viscosity of the solidified silt soil layer 2, ensure close adhesion between the solidified soil and the subsequent covering nutrient soil layer, and improve the stability of the entire structure.

[0055] (6) Ecological planting

[0056] A layer of nutrient soil is covered on the surface of the solidified silt soil layer 2, and grass seeds are evenly sown to start ecological planting, forming a nutrient soil planting layer 3. Next, necessary maintenance and management are carried out to ensure the healthy growth of vegetation and provide further ecological protection for the slope.

[0057] (7) Intelligent monitoring system

[0058] Distributed fiber optic sensors 4 are embedded in the slope surface to build an intelligent monitoring system to monitor key data such as slope erosion degree, soil settlement, soil pressure distribution and soil moisture content in real time, so as to promptly detect and respond to potential slope safety issues.

[0059] In the following examples, dredged sludge was taken from a river section in Jurong City, Jiangsu Province, with a water content of 40.5%, and liquid limits and plastic limits of 30% and 22.5%, respectively.

[0060] Unless otherwise specified, the remaining raw materials or processing techniques are conventional commercially available raw materials or conventional processing techniques in the art.

[0061] Example 1:

[0062] For river slope sites, this embodiment provides a bio-glue-coated multi-solid waste silt ecological slope and its construction monitoring method, specifically including:

[0063] (1) Site investigation

[0064] The width, length, slope, and curvature of the river channel were surveyed to determine the thickness and quantity of silt to ensure it met construction requirements. Silt samples were taken every 20 meters and brought back to the laboratory for liquid limit and plastic limit tests, moisture content tests, and toxicity leaching tests to determine the curing agent ratio.

[0065] (2) Site preparation

[0066] Complete the cleaning of the site surface, removing trees, dead grass, brick slag and other debris. After the cleaning is completed, the artificial pits should be filled and compacted, and rolled to the specified compaction degree. Ensure that the slope base is flat for construction, and ensure that the slope base is about 1:0.8.

[0067] (3) Preparation and spraying of adhesive

[0068] A certain amount of xanthan gum powder is pre-dispersed in a container. A small amount of water is used to keep it moist to reduce agglomeration during subsequent stirring. The pre-dispersed xanthan gum powder is added to a certain amount of water and stirred at a low speed using a stirrer to fully dissolve the xanthan gum in the aqueous solution, ensuring that a uniform aqueous solution (about 2% by mass) is formed. After the xanthan gum is fully dissolved, its pH value is tested and adjusted to between 6.0 and 8.0 to ensure its stable working state.

[0069] Use a spray gun or roller to spray straight along the slope from top to bottom, avoid oblique spraying to reduce the unevenness of the adhesive. When spraying, the next coat of paint should cover one-third or one-quarter of the previous coat to prevent leakage. The spraying volume is controlled at 4L / m 2 .

[0070] (4) Solidified sludge

[0071] The river slope is divided into three sections along the length, and the silt is solidified using different curing agent ratios.

[0072] The first stage uses carbide slag, cement, gypsum, and xanthan gum as curing agents, with a mixing ratio of 20:1:1:1.57. The curing agent accounts for approximately 10% of the solidified sludge. Cement improves the strength and stability of the sludge. The second stage uses slag and carbide slag as curing agents, with a mixing ratio of 4:1. The curing agent accounts for approximately 10% of the dredged sludge. The alkaline content of the slag chemically reacts with the sludge, thereby strengthening it. The third stage uses fly ash and carbide slag as curing agents, with a mixing ratio of 4:1. The curing agent accounts for approximately 10% of the dredged sludge. Fly ash makes the sludge more compact, increases its strength, and prevents it from loosening. Furthermore, the fly ash creates a smooth and dense surface after filling, which completely isolates the sludge from water.

[0073] Measure a solidifying agent appropriate to the mass of silt and mix it with the silt. Use a blender to thoroughly stir the mixture. Evenly spread the solidified silt soil on the slope surface to a thickness of 7 cm. Use excavators, bulldozers, and other equipment to lay and compact the silt soil, ensuring it adheres tightly to the slope base.

[0074] (5) Spraying adhesive

[0075] On the smoothed solidified silt soil layer 2, a second layer of xanthan gum solution is evenly sprayed using a spray gun and a roller.

[0076] (6) Ecological planting

[0077] Sow grass seeds or select suitable herbaceous plants and shrubs to improve soil retention capacity. Loosen the slopes to a depth of at least 0.10m. Slopes with thin soil should be covered with 0.10-0.30m of planting soil. After spreading the planting soil, use a combination of light machinery and manual leveling to ensure stable connection between soil layers. Sow two or more seeds in a mixed pattern, or sow a single variety in separate sections. Sow seeds evenly and thoroughly.

[0078] (7) Deployment of monitoring measures

[0079] Distributed optical fiber sensors 4 are buried on the slope surface to continuously monitor the slope erosion rate, soil settlement, soil pressure distribution and soil moisture content.

[0080] To verify the reinforcing effect and ecological adaptability of the bioglue combined with multi-component solid waste on muddy ecological slopes, this example conducted a series of experiments to test changes in surface strength, moisture content, and pH after curing. Three construction sections with different curing agent ratios were selected for the experiment. The performance indicators were recorded over different post-construction periods (1 day, 3 days, 5 days, 7 days, and 14 days). The results were then analyzed in detail to assess stability, durability, and ecological performance.

[0081] Depend on Figure 1It can be seen that the surface strength variation patterns of the three construction sections all show a trend of significant increase in strength over time after construction, showing a reinforcement effect during the curing process. Among them, the surface strength of the first section was 399kPa on the first day of construction, increased to 558.6kPa on the third day, reached 665kPa on the fifth day, and further increased to 691.6kPa on the seventh day. By the fourteenth day, due to the influence of rainfall, the surface strength dropped to 638.4kPa. The surface strengths of the second and third sections showed similar trends: the second section gradually increased from 465.5kPa on the first day of construction to 638.4kPa on the seventh day, but dropped to 598.5kPa on the fourteenth day due to rainfall; the third section increased from 452.2kPa to 598.5kPa on the seventh day, and dropped to 558.6kPa on the fourteenth day. Overall, the surface strength of each construction section increased steadily, and the first seven days showed a strong curing effect, showing the good reinforcement performance of the material of the present invention. However, the effect of rainfall on the surface strength on the fourteenth day suggests the potential interference of the external environment on the material properties, but the strength remains at a high level, reflecting the basic stability of the material.

[0082] Figure 2 The change in moisture content reflects the gradual dissipation of moisture during the curing process and the densification of the material. The initial moisture content of the first section was 56.76%, which dropped to 44.55% on the first day after construction, 39.91% on the third day, 35.49% on the fifth day, and further to 32.21% on the seventh day. By the fourteenth day, rainfall caused the moisture content to rebound to 43.82%. Similarly, the initial moisture content of the second section was 56.76%, which dropped to 39.07% on the first day. The subsequent change was more gradual, reaching a minimum of 35.28% on the seventh day, before rising to 36.5% on the fourteenth day due to rainfall. The initial moisture content of the third section showed an even more pronounced downward trend, gradually decreasing from 45.76% on the first day to 33.79% on the seventh day, and then rising to 36.77% on the fourteenth day. These results demonstrate that the material of this example can significantly reduce the moisture content of sludge, improving its density and stability. However, the effect of rainfall on the moisture content also reveals potential room for improvement in the material's resistance to water re-seepage.

[0083] Figure 3 The pH value changes over the zero period, reflecting the system's alkaline slow-release properties. The pH value of the first section was 12.2 on the first day of construction, then gradually decreased to 11.1 on the fourteenth day; the second section decreased from 12.2 to 11.12; and the third section decreased from 12.29 to 11.22. Analysis found that the decrease in pH was mainly due to the continuous consumption of alkaline substances in the system during the solidification process, chemically reacting with silt and the surrounding environment, causing the alkalinity to gradually weaken. This process shows that the solidification material has a significant reinforcement effect in the early stage, while also achieving alkaline slow-release in the later stage, which contributes to the long-term ecological stability of the slope.

[0084] Comparative Example 1:

[0085] Traditional slope materials (such as cement, gypsum, etc.) are used to construct a solidified silt coating. The specific ratio is cement (conventional commercially available silicate cement): sand: water at a ratio of 1:2:0.5. The construction method is to simply spray or plaster the traditional mixed materials. The traditional slope coating has poor resistance to water erosion. Especially in the case of long-term water immersion or rain erosion, cement-based materials are prone to shedding, cracking, and other phenomena. It is predicted that in the experiment, the erosion resistance time of traditional cement-based materials under the impact of water flow may be shorter, and obvious coating peeling and pore expansion are shown in the test. In the standard water erosion test (lasting more than 24 hours), the mass loss of the traditional coating is expected to be 15%-30%.

[0086] Due to the low bonding strength of traditional slope materials, especially in wet or humid environments, the bonding strength between the coating and the substrate may be significantly reduced. It is estimated that the tensile strength of traditional coatings may be less than 0.5MPa, making them prone to falling off under stress or external forces.

[0087] Traditional cement materials are relatively easy to construct, but the coating's strength and water erosion resistance are relatively low, requiring more frequent inspection and maintenance after construction, especially in rainy or high-humidity environments.

[0088] Comparative Example 2:

[0089] The two spraying layers of xanthan gum solution were omitted, and the bio-glue was directly mixed with the solid waste sludge for coating application. Omitting the xanthan gum solution coating may result in poor water stability of the slope. Xanthan gum, as a natural polymer, has excellent adhesion and water stability. Its removal may significantly reduce the solid waste sludge coating's resistance to water erosion. It is predicted that in standard water erosion tests, the coating without the xanthan gum solution may exhibit a higher coating peeling rate of approximately 20%-40%. In a humid environment, the coating may experience short-term problems such as shedding and crack propagation.

[0090] After omitting xanthan gum spraying, the cohesiveness between bio-glue and solid waste sludge is not enough, causes connection stability to reduce.The effect of xanthan gum is to strengthen the bonding force of bio-glue and solid waste sludge particles, and after removing, bonding performance significantly declines.Predict that it passes through tensile test, the tensile strength of coating may only be 0.3-0.6MPa, lower than the intensity of embodiment 1, is easily subject to external pulling force or vibration influence.Under long-term exposure to external environment (such as weathering, precipitation etc.), cracks may occur in the coating removing xanthan gum solution, reduces the stability connected.

[0091] By omitting the xanthan gum spray, construction time may be shortened, but this may also lead to insufficient bonding and subsequent maintenance issues. While construction is easier, the lack of the adhesive bonding of the bio-glue significantly reduces the durability and effectiveness of the coating.

[0092] Comparative Example 3:

[0093] In order to further explore the effect of xanthan gum on the overall performance, xanthan gum solutions with different mass fractions (1%, 1.5%, 2%, 2.5%) can be designed. The multi-component solid waste and sludge components are kept consistent, and the spraying process is the same as in Example 1.

[0094] As the mass fraction of xanthan gum increases, its adhesion and erosion resistance gradually increase. A 2% mass fraction xanthan gum solution exhibits the best adhesion and water erosion resistance. Further increases in concentration, however, lead to a decrease in coating stability due to excessive viscosity. This nonlinear change indicates that the effect of xanthan gum depends not only on enhanced viscosity but also on the coating's uniformity, ductility, and inter-structural stress balance.

[0095] Based on experimental predictions and analysis, a 2% xanthan gum mass fraction is optimal, demonstrating the best water erosion resistance and the lowest water erosion loss rate (estimated to be less than 5%). It also exhibits the strongest bonding stability, resulting in a uniform coating with no noticeable cracking or flaking. Appropriate viscosity ensures good coating coverage while avoiding buildup or cracking caused by excessive viscosity. Therefore, a 2% xanthan gum solution is ideal for improving the water erosion resistance and bond stability of ecological slopes, making it an ideal choice for implementation.

[0096] In general, the present invention invents an ecological slope material and its construction monitoring method by synergizing bio-glue with various solid wastes. Dredged silt is solidified with a curing agent to form a solidified soil structure, and xanthan gum is used as an adhesive to enhance the bonding between the solidified soil and the slope base. The construction method is divided into four layers of construction, and fiber optic sensors are buried in the slope for real-time monitoring to ensure the long-term safety and stability of the slope. This invention not only effectively processes solid waste and silt resources, but also reduces project costs, improves the connection stability of the slope, and achieves environmental protection and ecological restoration through ecological planting.

[0097] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. A bio-glue synergistic multi-solid waste muddy ecological slope, characterized in that: It includes a slope base, and a first bio-glue bonding layer, a solidified silt soil layer, a second bio-glue bonding layer and a nutrient soil planting layer which are sequentially compounded on the slope base; The first bio-glue adhesive layer and the second bio-glue adhesive layer are obtained by spraying a bio-glue solution formed by xanthan gum and water, wherein the mass fraction of the xanthan gum in the bio-glue solution is 1.5-2.5%; The solidified silt soil layer is obtained by mixing dredged silt with a multi-solid waste solidifying agent, spreading the mixture, and compacting the mixture. When the multi-solid waste curing agent is prepared by mixing solid waste and xanthan gum, the component ratio is: 100-200 parts of carbide slag, 10-20 parts of cement, 10-20 parts of gypsum, and 5-15 parts of xanthan gum.

2. The bio-glue synergistic multi-solid waste muddy ecological slope according to claim 1, characterized in that: The slope rate of the slope base is 1:0.75~1:

1.

3. The bio-glue synergistic multi-solid waste muddy ecological slope according to claim 1, characterized in that: The initial moisture content of the dredged sludge is between 40% and 60%, and the dosage of the multi-solid waste solidifying agent is 9-15% of the mass of the dredged sludge.

4. The bio-glue synergistic multi-solid waste muddy ecological slope according to claim 1, characterized in that: The thickness of the solidified silt soil layer is 5-10 cm, and the thickness of the nutrient soil planting layer is 0.1-0.3 m.

5. A construction method for a bio-glue-coordinated multi-solid waste muddy ecological slope as described in any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Clear the construction obstacles on the slope base, level it and compact it; S2, preparing a bio-glue adhesive solution, and spraying it on the slope surface of the slope base to obtain a first bio-glue adhesive layer; S3, taking the dredged sludge and the multi-solid waste solidifying agent, fully and quickly mixing them to obtain a solidified soil material, and spreading the solidified soil material on the slope base sprayed with the first bioadhesive adhesive layer in S2, and compacting the solidified soil material to form the solidified sludge layer; S4, spraying a bio-glue adhesive solution onto the solidified silt soil layer compacted in S3 to obtain a second bio-glue adhesive layer; S5. Covering the solidified silt soil layer sprayed with the second bioglue adhesive layer in S4 with nutrient soil to obtain the nutrient soil planting layer.

6. The construction method of a bio-glue-coordinated multi-solid waste muddy ecological slope according to claim 5, characterized in that: The prepared bio-glue adhesive solution is a xanthan gum aqueous solution with a mass fraction of 1.5-2.5%, and the spraying amount of S2 and S4 is 3-5 L / m 2 .

7. A method for monitoring ecological slopes using bio-glue in collaboration with multi-solid waste mud as claimed in any one of claims 1 to 4, characterized in that: Distributed optical fiber sensors are also installed in the solidified silt soil layer to detect information including temperature, displacement, soil pressure or strain.

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