Expansive soil high fill slope structure

Abstract

The application discloses an expansive soil high fill slope structure, which comprises an expansive soil layer, one side of the expansive soil layer is in a ladder form, a gravel reinforcing layer is arranged on the side of the expansive soil layer in the ladder form, and an auxiliary reinforcing assembly is arranged on the outer side of the gravel reinforcing layer; the self-adapting pressurizing reinforcing mechanism driven by water is designed according to the characteristics of the expansive soil, such as water expansion, water shrinkage and easy cracking and sliding, the water flow energy of the slope drainage system is used to drive the impeller and the pressing block to rotate, the arc-shaped spring is used to realize the cyclic extension and contraction of the arc-shaped sliding rod, the side pressurizing plate and the lower pressurizing plate are driven to continuously compact the gravel reinforcing layer and the expansive soil layer, the soil loosening and the slope cracking caused by the deformation of the expansive soil can be dynamically offset, the multiple fixing structures of the fixed anchor rod and the supporting inclined plate are matched, the settlement, sliding and collapse diseases of the high fill slope can be effectively avoided, the structural stability of the expansive soil high fill slope in long-term use is greatly improved, and the complex outdoor hydrological environment is adapted.

Description

Technical Field

[0001] This invention relates to the field of slope protection technology, specifically to a high-fill slope structure for expansive soil. Background Technology

[0002] Expansive soil is a special type of soil and rock with significant wet-dry cycle deformation characteristics. Rich in hydrophilic clay minerals, it is highly susceptible to repeated deformation under natural environmental conditions such as rainfall, groundwater infiltration, and alternating wet and dry conditions. This deformation is accompanied by soil cracking, loosening, and a sharp drop in strength, making it a notoriously difficult soil to manage in the construction and maintenance of high embankment slopes for highways, railways, and municipal engineering projects. Currently, the number of high embankment slope projects in expansive soil areas is increasing year by year. These projects involve large embankment heights, large volumes of fill soil, and complex environmental hydrological conditions, placing extremely high demands on the overall stability, deformation resistance, and drainage and seepage prevention capabilities of the slopes. Traditional slope protection structures have many technical deficiencies in adapting to the special mechanical properties of expansive soil, easily leading to engineering problems such as slope slippage, collapse, surface spalling, and penetrating cracks, seriously threatening the operational safety of the project.

[0003] Currently, most existing slope protection technologies for high embankments with expansive soil employ a single protection mode. Conventional solutions mainly include simple crushed stone cushion layer reinforcement, rigid cement concrete slope protection, and simple grass-planted ecological slope protection. Among these, while traditional rigid cement slope protection has a certain surface protection capability, its overall structure is solidified and cannot adapt to the cyclic deformation characteristics of expansive soil. The internal stress generated by soil expansion and contraction cannot be released and offset, leading to problems such as slope cracking, hollowing, and detachment from the soil after long-term use. Crushed stone reinforcement layers can only achieve permeable leveling of the foundation and lack an active restraint mechanism, making it difficult to resist the continuous lateral expansion pressure of expansive soil and failing to fundamentally solve the hidden dangers of soil loosening and sliding. Conventional ecological slope protection has low protection strength and lacks reinforcement and support structures. Under the large soil pressure and rainwater erosion of high embankment slopes, it is extremely prone to problems such as surface soil loss, vegetation death, and slope collapse. Summary of the Invention

[0004] The purpose of this invention is to provide a high-fill slope structure for expansive soil to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high fill slope structure for expansive soil, comprising an expansive soil layer, one side of which is stepped, a crushed stone reinforcement layer is laid on the stepped side of the expansive soil layer, an auxiliary reinforcement component is installed on the outside of the crushed stone reinforcement layer, an organic soil layer is laid on the outside of the crushed stone reinforcement layer, and the auxiliary reinforcement component is located on the inside of the organic soil layer, a protective cement layer is laid on one side of the organic soil layer, and a connecting cement platform is fixedly installed on one side of the expansive soil layer.

[0006] Preferably, the auxiliary reinforcement component includes an outer sleeve, and a plurality of arc-shaped sliding sleeves are fixedly connected to the outer side of the outer sleeve. Arc-shaped sliding rods are slidably installed inside the plurality of arc-shaped sliding sleeves. A side pressure plate and a lower pressure plate are fixedly installed at one end of the arc-shaped sliding rods, and the ends of the side pressure plate and the lower pressure plate away from the arc-shaped sliding rods are in contact with one side of the crushed stone reinforcement layer.

[0007] Preferably, sliding pressure plates are fixedly installed on both sides of the arc-shaped slide rod, and an arc-shaped spring is fixedly installed on one side of each sliding pressure plate. Arc-shaped grooves are opened on both sides of the arc-shaped slide sleeve. The sliding pressure plate is movably installed on the inner side of the arc-shaped groove, and the end of the arc-shaped spring away from the sliding pressure plate is fixedly connected to one side of the inner cavity of the arc-shaped groove.

[0008] Preferably, a rotating rod is rotatably installed inside the outer sleeve, an impeller is fixedly installed at one end of the rotating rod, and multiple pressure blocks are fixedly installed on the outer side of the rotating rod. The positions of the multiple pressure blocks correspond to the positions of the arc-shaped sliding rod. A second guide channel is provided on one side of the connecting cement platform, a first guide channel is provided at one end of the second guide channel, and a water guide channel is connected to the end of the first guide channel away from the second guide channel. The impeller is located inside the second guide channel.

[0009] Preferably, an assembly strip is fixedly installed on the outer side of the outer sleeve, and multiple assembly slots are opened on the outer side of the assembly strip. Each of the multiple assembly slots has a snap-fit ​​block installed on its inner side, and a support inclined plate is fixedly installed on one side of the snap-fit ​​block. An inclined plate is fixedly installed on the outer side of the outer sleeve, and a triangular strip is fixedly installed on the side of the inclined plate away from the outer sleeve. Multiple fixed anchor rods are fixedly installed on the outer side of the triangular strip.

[0010] Preferably, a fixing slot is provided on the inner side of the crushed stone reinforcement layer and the expansive soil layer, and the fixing anchor is inserted and installed on the inner side of the fixing slot.

[0011] Preferably, vertical water pipes are fixedly installed inside the protective cement layer, the crushed stone reinforcement layer, and the expansive soil layer. A water guide pipe is fixedly installed inside the expansive soil layer. The bottom of the vertical water pipe is connected to the outside of the water guide pipe, and one end of the water guide pipe is connected to the inside of the water guide channel.

[0012] Preferably, a filter cover 2 is fixedly installed inside the top of the flow guide channel 2, and a filter cover 1 is fixedly installed inside the top of the vertical water pipe.

[0013] Preferably, a greening planting frame is fixedly installed on the outside of the protective cement layer, and planting troughs are opened inside both the protective cement layer and the supporting inclined plate, with the planting troughs and the greening planting frame corresponding to each other.

[0014] Preferably, an inspection ladder is provided on one side of the connecting cement platform.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: taking advantage of the characteristics of expansive soil to expand when it comes into contact with water, shrink when it loses water, and easily crack and slide, a hydraulically driven adaptive pressurization and reinforcement mechanism is designed. Relying on the water flow energy of the slope drainage system, the impeller and the pressure block are driven to operate. With the help of the arc spring, the arc sliding rod is cyclically extended and retracted, driving the side pressure plate and the lower pressure plate to continuously compact the crushed stone reinforcement layer and the expansive soil layer. This can dynamically offset the soil loosening and slope cracking caused by the deformation of expansive soil. At the same time, with the multiple fixing structure of fixed anchor rods and supporting inclined plates, the settlement, sliding and collapse of high fill slopes are effectively avoided, and the structural stability of expansive soil high fill slopes is greatly improved for long-term use, making it suitable for complex outdoor hydrological environments. In addition, a comprehensive layered drainage system was constructed, forming a complete drainage channel through vertical water pipes, water guide pipes, and multi-stage diversion channels. Coupled with double-layer filter covers to intercept impurities, it completely solves the core problems of traditional slope drainage blockage and waterlogging of the soil. It reduces the expansion damage of expansive soil caused by water accumulation from the source. At the same time, it combines rigid cement protection, gravel reinforcement, and organic soil greening planting structure. It strengthens the slope protection capacity through hard structure and stabilizes the surface soil and improves the ecological environment of the slope through vegetation planting. It achieves the combination of engineering protection and ecological restoration, effectively delays structural aging, and significantly extends the overall service life of the slope. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional appearance structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the slope of the present invention.

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the slope removal organic soil layer and protective cement layer of the present invention.

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the slope removal auxiliary reinforcement component, organic soil layer, and protective cement layer of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the auxiliary reinforcement component of the present invention.

[0021] Figure 6 This is a partial structural diagram of the auxiliary reinforcement component of the present invention.

[0022] Figure 7 This is a schematic diagram of the three-dimensional structure of the inner rotating rod of the present invention.

[0023] Figure 8 This is a schematic diagram of the three-dimensional structure of the pressure plate of the present invention.

[0024] Figure 9This is a schematic diagram of the three-dimensional structure of the cement platform connected to the present invention.

[0025] In the diagram: 1. Protective cement layer; 2. Connecting cement platform; 3. Filter cover one; 4. Filter cover two; 5. Inspection steps; 6. Water guide pipe; 7. Water guide channel; 8. Flow channel one; 9. Flow channel two; 10. Expansive soil layer; 11. Inclined plate; 12. Triangular strip; 13. Impeller; 14. Crushed stone reinforcement layer; 15. Green planting frame; 16. Organic soil layer; 17. Planting trough; 18. Supporting inclined plate; 19. Arc-shaped sliding rod; 20. Arc-shaped sliding sleeve; 21. Assembly strip; 22. Assembly slot; 23. Outer sleeve; 24. Lower pressure plate; 25. Side pressure plate; 26. Fixed anchor rod; 27. Arc-shaped spring; 28. Arc-shaped sliding groove; 29. ​​Pressure block; 30. Rotating rod; 31. Fixed slot; 32. Vertical water pipe; 33. Sliding pressure plate. Detailed Implementation

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

[0027] Please see Figures 1-9This invention provides a technical solution: a high-fill slope structure for expansive soil, comprising an expansive soil layer 10, one side of which is stepped; a crushed stone reinforcement layer 14 is laid on the stepped side of the expansive soil layer 10; an auxiliary reinforcement component is installed on the outside of the crushed stone reinforcement layer 14; an organic soil layer 16 is laid on the outside of the crushed stone reinforcement layer 14; the auxiliary reinforcement component is located inside the organic soil layer 16; a protective cement layer 1 is laid on one side of the organic soil layer 16; a connecting cement platform 2 is fixedly installed on one side of the expansive soil layer 10; the auxiliary reinforcement component includes an outer sleeve 23; and the outer side of the outer sleeve 23... Multiple arc-shaped sliding sleeves 20 are fixedly connected. Arc-shaped sliding rods 19 are slidably installed inside each arc-shaped sliding sleeve 20. A side pressure plate 25 and a lower pressure plate 24 are fixedly installed at one end of each arc-shaped sliding rod 19, with the ends of the side pressure plates 25 and 24 away from the arc-shaped sliding rod 19 contacting one side of the crushed stone reinforcement layer 14. Sliding pressure plates 33 are fixedly installed on both sides of the arc-shaped sliding rod 19. Arc-shaped springs 27 are fixedly installed on one side of each sliding pressure plate 33. Arc-shaped grooves 28 are formed on both sides of the arc-shaped sliding sleeve 20. The sliding pressure plates 33 are movably installed inside the arc-shaped grooves 28. Arc-shaped springs 27... 7. The end away from the sliding pressure plate 33 is fixedly connected to one side of the inner cavity of the arc-shaped slide groove 28. A rotating rod 30 is rotatably installed inside the outer sleeve 23. An impeller 13 is fixedly installed at one end of the rotating rod 30. Multiple pressing blocks 29 are fixedly installed on the outside of the rotating rod 30. The positions of the multiple pressing blocks 29 correspond to the positions of the arc-shaped slide rod 19. A guide channel 2 9 is opened on one side of the cement platform 2. A guide channel 8 is opened at one end of the guide channel 2 9. The end of the guide channel 8 away from the guide channel 2 9 is connected to the water guide channel 7. The impeller 13 is located inside the guide channel 2 9. A set of... The assembly strip 21 has multiple assembly slots 22 on its outer side, and each assembly slot 22 has a snap-fit ​​block installed on its inner side. A support inclined plate 18 is fixedly installed on one side of the snap-fit ​​block. An inclined plate 11 is fixedly installed on the outer side of the outer sleeve 23. A triangular strip 12 is fixedly installed on the side of the inclined plate 11 away from the outer sleeve 23. Multiple fixed anchor rods 26 are fixedly installed on the outer side of the triangular strip 12. A fixed slot 31 is opened on the inner side of the crushed stone reinforcement layer 14 and the expansive soil layer 10. The fixed anchor rods 26 are inserted into the inner side of the fixed slot 31. An inspection step 5 is provided on one side of the cement platform 2.

[0028] The working principle of the above technical solution is as follows: The core load-bearing soil of the slope is an expansive soil layer 10 with a stepped structure. The stepped slope design can effectively disperse the vertical pressure and lateral sliding force of the slope, avoiding the defect of easy overall sliding on a flat slope. A crushed stone reinforcement layer 14 is evenly laid on the outer slope surface of the expansive soil layer 10. The crushed stone material has the characteristics of high porosity, high compressive strength and not easy deformation. It can not only level and compact the surface of the expansive soil layer 10 as a whole, restrain the cracking and falling off of the expansive soil surface, but also play a role in water permeability and seepage prevention, and buffering soil deformation. This prevents surface water from directly eroding the expansive soil. Then, the auxiliary reinforcement components are installed as a whole. The inclined plate 11 and triangular strip 12, which are fixed to the outside of the outer sleeve 23, enhance the connection and fit. Through multiple sets of fixed anchor rods 26 at the bottom of the triangular strip 12, they are vertically inserted and fixed inside the pre-set fixed slots 31 between the expansive soil layer 10 and the crushed stone reinforcement layer 14. This achieves embedded rigid fixation between the reinforcement components and the slope soil, preventing the reinforcement structure from shifting, loosening, or falling off, and providing a stable structural foundation for subsequent adaptive pressurization and support protection. When the slope encounters rainfall, the water flowing continuously inside the diversion channel 2 9 will precisely impact the built-in impeller 13. The kinetic energy of the natural rainwater will drive the impeller 13 to rotate continuously and uniformly, which will in turn drive the rotating rod 30, which is coaxially fixed to the impeller 13, to rotate synchronously. No external power or mechanical equipment is required, realizing the autonomous utilization of water energy and providing a continuous and stable power source for subsequent adaptive pressure reinforcement of the soil. Under rainfall conditions, the expansive soil layer 10 absorbs moisture and expands in volume, generating outward lateral pressure. At this time, the lower pressure plate 24 and the side pressure plate 25, which are attached to the crushed stone reinforcement layer 14, directly bear the soil expansion pressure and exert a pushing force on the arc-shaped sliding rod 19 in the opposite direction. This causes the arc-shaped sliding rod 19 to move inside the arc-shaped sliding sleeve 20. During the displacement, the sliding pressure plates 33 on both sides of the arc-shaped sliding rod 19 slide synchronously inside the arc-shaped sliding groove 28, continuously compressing the arc-shaped spring 27. This causes the arc-shaped spring 27 to undergo compression deformation and generate a reverse elastic force, which can directly counteract the water absorption and expansion of the expansive soil layer 10. Force constrains the soil to deform, crack, and loosen. At the same time, the impeller 13 is driven by the water flow to drive the rotating rod 30 to rotate continuously, causing multiple sets of pressure blocks 29 on the outside to rotate periodically and fit and press against the end of the arc-shaped sliding rod 19, providing active pushing force for the arc-shaped sliding rod 19. This further allows the lower pressure plate 24 and the side pressure plate 25 to tightly press against and compact the crushed stone reinforcement layer 14, offsetting the gaps caused by soil expansion. Through the two-way balancing mechanism of passive pressure application due to soil expansion and active pressure application driven by water energy, it can adapt to the deformation changes caused by the dry and wet cycle of the expansive soil layer 10 in real time, always constraining the stability of the slope soil and preventing slope cracking and sliding diseases. After the auxiliary reinforcement components are fixed, modular assembly is achieved through the assembly strips 21 on the outer side of the outer sleeve 23. The assembly slots 22 evenly opened on the outer side of the assembly strips 21 are used to snap the snap blocks on the back of the support inclined plate 18, and the assembly and fixing of multiple sets of support inclined plates 18 is completed quickly. The assembled support inclined plate 18 has an inclined support structure, which can form a stable inclined support force for the crushed stone reinforcement layer 14 and the outer soil cover, disperse the lateral pressure of the slope, and further improve the overall anti-sliding and anti-overturning capacity of the slope. After the reinforcement structure is assembled, an organic soil layer 16 is laid flat on the outer side of the crushed stone reinforcement layer 14 to provide a good substrate for subsequent vegetation growth. Finally, a protective cement layer 1 is poured on the outermost side to form a multi-layer rigid protection system with inner soil reinforcement, middle crushed stone buffer, and outer cement protection.

[0029] In another implementation scheme, such as Figures 1-9 As shown, vertical water pipes 32 are fixedly installed inside the protective cement layer 1, the crushed stone reinforcement layer 14, and the expansive soil layer 10. A water guide pipe 6 is fixedly installed inside the expansive soil layer 10. The bottom of the vertical water pipe 32 is connected to the outside of the water guide pipe 6. One end of the water guide pipe 6 is connected to the inside of the water guide channel 7. A filter cover 2 4 is fixedly installed inside the top of the water guide channel 2 9. A filter cover 1 3 is fixedly installed inside the top of the vertical water pipe 32.

[0030] Rainwater is precisely channeled into the drainage system in two streams: one stream, after being filtered by filter cover 3 to intercept impurities, enters the vertical water pipe 32; the other stream, after being filtered and purified by filter cover 4, flows directly into the diversion channel 9. The rainwater entering the vertical water pipe 32 flows downward along the pipe and eventually flows into the water diversion pipe 6 installed inside the expansive soil layer 10; while the water flowing into the diversion channel 9 flows into the diversion channel 8, and then from the diversion channel 8 into the diversion channel 7. At the same time, the rainwater collected inside the diversion pipe 6 is uniformly transported to the diversion channel 7. The two streams eventually merge inside the diversion channel 7, forming a complete and orderly rainwater diversion path. The dual filtration structure can effectively intercept external impurities such as fallen leaves, mud, and gravel, completely avoiding drainage channel blockage and ensuring smooth drainage.

[0031] In another implementation scheme, such as Figures 1-9 As shown, a greening planting frame 15 is fixedly installed on the outside of the protective cement layer 1. Planting troughs 17 are opened inside both the protective cement layer 1 and the supporting inclined plate 18. The positions of the planting troughs 17 and the greening planting frame 15 are corresponding.

[0032] Based on the planting troughs 17 corresponding to the protective cement layer 1 and the supporting inclined plate 18, and in conjunction with the greening planting frames 15 arranged on the outside, herbaceous and shrub vegetation is planted. The plant roots further consolidate the surface soil, realizing an organic combination of rigid engineering protection and flexible ecological protection. In addition, the cement platform 2 connected to the side of the slope is equipped with inspection steps 5, which allows staff to regularly inspect and maintain the slope structure, drainage channels, and vegetation growth status, ensuring the long-term stable operation of the slope.

[0033] Working principle: The core load-bearing soil of the slope is a stepped expansive soil layer 10. The stepped slope design effectively disperses the vertical pressure and lateral sliding force of the slope, avoiding the defects of flat slopes that are prone to overall slippage. A crushed stone reinforcement layer 14 is evenly laid on the outer slope surface of the stepped expansive soil layer 10. The crushed stone material has the characteristics of high porosity, high compressive strength, and resistance to deformation. It can not only level and compact the surface of the expansive soil layer 10, restrain the cracking and spalling of the expansive soil surface, but also play a role in water permeability and seepage prevention, buffering soil deformation, and blocking Surface water directly erodes the expansive soil. Subsequently, the auxiliary reinforcement components are installed as a whole. The inclined plate 11 and triangular strip 12, which are fixed on the outer side of the outer sleeve 23, enhance the connection and fit. Multiple sets of fixed anchor rods 26 at the bottom of the triangular strip 12 are vertically inserted and fixed inside the pre-set fixed slots 31 between the expansive soil layer 10 and the crushed stone reinforcement layer 14. This achieves embedded rigid fixation of the reinforcement components and the slope soil, preventing the reinforcement structure from shifting, loosening, or falling off, and providing a stable structural foundation for subsequent adaptive pressurization and support protection. When the slope encounters rainfall, the rainwater is precisely channeled into the drainage system in two streams: one stream, after being filtered by filter cover 3 to intercept impurities, enters the vertical water pipe 32; the other stream, after being filtered and purified by filter cover 4, flows directly into the diversion channel 9. The rainwater entering the vertical water pipe 32 flows downwards along the pipe and eventually flows into the diversion pipe 6 installed inside the expansive soil layer 10; while the water flowing into diversion channel 9 flows into diversion channel 8, and then from diversion channel 8 into diversion channel 7. Simultaneously, the rainwater collected inside diversion pipe 6 is uniformly transported to diversion channel 7. The two streams ultimately... The water converges inside the water guide channel 7, forming a complete and regular rainwater flow path. The dual filtration structure can effectively intercept external impurities such as fallen leaves, mud, sand, and gravel, completely avoiding the problem of drainage channel blockage and ensuring smooth drainage. At the same time, the continuous flow of water inside the second guide channel 9 will precisely impact the built-in impeller 13, using the kinetic energy of natural rainwater to drive the impeller 13 to rotate continuously and uniformly, thereby driving the rotating rod 30, which is coaxially fixed to the impeller 13, to rotate synchronously. No external power or mechanical equipment is required, realizing the autonomous utilization of water energy and providing a continuous and stable power source for subsequent soil adaptive pressure reinforcement. Under rainfall conditions, the expansive soil layer 10 absorbs moisture and expands in volume, generating outward lateral pressure. At this time, the lower pressure plate 24 and the side pressure plate 25, which are attached to the crushed stone reinforcement layer 14, directly bear the soil expansion pressure and exert a pushing force on the arc-shaped sliding rod 19 in the opposite direction. This causes the arc-shaped sliding rod 19 to move inside the arc-shaped sliding sleeve 20. During the displacement, the sliding pressure plates 33 on both sides of the arc-shaped sliding rod 19 slide synchronously inside the arc-shaped sliding groove 28, continuously compressing the arc-shaped spring 27. This causes the arc-shaped spring 27 to undergo compression deformation and generate a reverse elastic force, which can directly counteract the water absorption and expansion of the expansive soil layer 10. Force constrains the soil to deform, crack, and loosen. At the same time, the impeller 13 is driven by the water flow to drive the rotating rod 30 to rotate continuously, causing multiple sets of pressure blocks 29 on the outside to rotate periodically and fit and press against the end of the arc-shaped sliding rod 19, providing active pushing force for the arc-shaped sliding rod 19. This further allows the lower pressure plate 24 and the side pressure plate 25 to tightly press against and compact the crushed stone reinforcement layer 14, offsetting the gaps caused by soil expansion. Through the two-way balancing mechanism of passive pressure application due to soil expansion and active pressure application driven by water energy, it can adapt to the deformation changes caused by the dry and wet cycle of the expansive soil layer 10 in real time, always constraining the stability of the slope soil and preventing slope cracking and sliding diseases. After the auxiliary reinforcement components are fixed, modular assembly is achieved using the assembly strips 21 on the outer side of the outer sleeve 23. The evenly spaced assembly slots 22 on the outer side of the assembly strips 21 are used to engage the locking blocks on the back of the supporting inclined plates 18, quickly completing the assembly and fixing of multiple sets of supporting inclined plates 18. The assembled supporting inclined plates 18 form an inclined support structure, providing stable oblique support to the gravel reinforcement layer 14 and the outer soil cover, dispersing the lateral pressure on the slope, and further enhancing the overall anti-slip and anti-overturning capacity of the slope. After the reinforcement structure is assembled, an organic soil layer 16 is laid flat on the outer side of the gravel reinforcement layer 14 to provide good conditions for subsequent vegetation growth. With a good substrate, a protective cement layer 1 is poured on the outermost side to form a multi-layered rigid protection system consisting of inner soil reinforcement, middle gravel buffer, and outer cement protection. At the same time, relying on the planting troughs 17 corresponding to the protective cement layer 1 and the supporting inclined plate 18, herbaceous and shrub vegetation is planted in conjunction with the greening planting frames 15 arranged on the outside. The plant roots further consolidate the surface soil, achieving an organic combination of rigid engineering protection and flexible ecological protection. In addition, the cement platform 2 connected to the side of the slope is equipped with inspection steps 5, which allows staff to regularly inspect and maintain the slope structure, drainage channels, and vegetation growth status, ensuring the long-term stable operation of the slope.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high embankment slope structure for expansive soil, comprising an expansive soil layer (10), wherein one side of the expansive soil layer (10) is stepped, characterized in that: The expansive soil layer (10) is stepped and has a crushed stone reinforcement layer (14) on one side. An auxiliary reinforcement component is installed on the outside of the crushed stone reinforcement layer (14). An organic soil layer (16) is laid on the outside of the crushed stone reinforcement layer (14), and the auxiliary reinforcement component is located on the inside of the organic soil layer (16). A protective cement layer (1) is laid on one side of the organic soil layer (16), and a connecting cement platform (2) is fixedly installed on one side of the expansive soil layer (10).

2. The expansive soil high embankment slope structure according to claim 1, characterized in that: The auxiliary reinforcement component includes an outer sleeve (23), and multiple arc-shaped sliding sleeves (20) are fixedly connected to the outer side of the outer sleeve (23). Arc-shaped sliding rods (19) are slidably installed inside the multiple arc-shaped sliding sleeves (20). A side pressure plate (25) and a lower pressure plate (24) are fixedly installed at one end of the arc-shaped sliding rods (19), and the ends of the side pressure plate (25) and the lower pressure plate (24) away from the arc-shaped sliding rods (19) are in contact with one side of the crushed stone reinforcement layer (14).

3. The expansive soil high embankment slope structure according to claim 2, characterized in that: Both sides of the arc-shaped slide bar (19) are fixedly installed with sliding pressure plates (33), and one side of the sliding pressure plate (33) is fixedly installed with an arc-shaped spring (27). Both sides of the arc-shaped slide sleeve (20) are provided with arc-shaped slide grooves (28). The sliding pressure plate (33) is movably installed inside the arc-shaped slide groove (28). The end of the arc-shaped spring (27) away from the sliding pressure plate (33) is fixedly connected to one side of the inner cavity of the arc-shaped slide groove (28).

4. The expansive soil high embankment slope structure according to claim 3, characterized in that: The inner side of the outer sleeve (23) is rotatably mounted with a rotating rod (30). One end of the rotating rod (30) is fixedly mounted with an impeller (13). Multiple pressure blocks (29) are fixedly mounted on the outer side of the rotating rod (30). The positions of the multiple pressure blocks (29) correspond to the positions of the arc-shaped sliding rod (19). A second guide groove (9) is opened on one side of the connecting cement platform (2). A first guide groove (8) is opened at one end of the second guide groove (9). The end of the first guide groove (8) away from the second guide groove (9) is connected to a water guide groove (7). The impeller (13) is located inside the second guide groove (9).

5. The expansive soil high embankment slope structure according to claim 4, characterized in that: An assembly strip (21) is fixedly installed on the outer side of the outer sleeve (23). Multiple assembly slots (22) are provided on the outer side of the assembly strip (21). A snap-fit ​​block is snapped onto the inner side of each of the multiple assembly slots (22). A support inclined plate (18) is fixedly installed on one side of the snap-fit ​​block. An inclined plate (11) is fixedly installed on the outer side of the outer sleeve (23). A triangular strip (12) is fixedly installed on the side of the inclined plate (11) away from the outer sleeve (23). Multiple fixed anchor rods (26) are fixedly installed on the outer side of the triangular strip (12).

6. The expansive soil high embankment slope structure according to claim 5, characterized in that: The inner sides of the crushed stone reinforcement layer (14) and the expansive soil layer (10) are provided with fixing slots (31), and fixing anchors (26) are inserted and installed on the inner side of the fixing slots (31).

7. The expansive soil high embankment slope structure according to claim 6, characterized in that: Vertical water pipes (32) are fixedly installed inside the protective cement layer (1), the crushed stone reinforcement layer (14), and the expansive soil layer (10). A water guide pipe (6) is fixedly installed inside the expansive soil layer (10). The bottom of the vertical water pipe (32) is connected to the outside of the water guide pipe (6), and one end of the water guide pipe (6) is connected to the inside of the water guide channel (7).

8. The expansive soil high embankment slope structure according to claim 7, characterized in that: The top of the second guide channel (9) is fixedly installed with a filter cover (4), and the top of the vertical water pipe (32) is fixedly installed with a filter cover (3).

9. A high-fill slope structure for expansive soil according to claim 8, characterized in that: A greening planting frame (15) is fixedly installed on the outside of the protective cement layer (1). Planting troughs (17) are opened inside both the protective cement layer (1) and the supporting inclined plate (18). The planting troughs (17) and the greening planting frame (15) are positioned correspondingly.

10. A high-fill slope structure for expansive soil according to claim 9, characterized in that: An inspection staircase (5) is provided on one side of the connecting cement platform (2).

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