Soft soil levee slope composite reinforcing method and device based on prestressed corrugated pile emergency support

Abstract

The invention discloses a composite reinforcing method and device for a soft soil levee slope based on prestressed corrugated pile emergency support, and the method comprises the steps: investigating a to-be-reinforced levee slope and engineering geological conditions in an influence range of the to-be-reinforced levee slope, and obtaining investigation data; calculating by setting a slope stability analysis strategy to obtain a natural state safety coefficient; the state of the to-be-reinforced levee slope is judged, and a state result is obtained; according to a state result, a cement-soil mixing pile temporary construction platform, a composite reinforcing area, a prestress wave-shaped pile and a three-dimensional drainage system are designed; and performing construction preparation and reinforcement construction according to the design scheme. The problems of temporary emergency and permanent splitting, construction disturbance instability, high cost, river channel occupation, difficulty in considering efficiency and ecology and the like in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, specifically to a method and device for composite reinforcement of soft soil embankments based on emergency support of prestressed corrugated piles. Background Technology

[0002] In the field of water conservancy engineering, soft soil slope reinforcement technology has long been developed around two main directions: "temporary emergency response" and "permanent reinforcement," and has been applied on a large scale in areas with deep soft soil distribution, such as the middle and lower reaches of the Yangtze River and the Pearl River Delta in my country. Among temporary emergency measures, soil filling / rockfill counterweight technology is often used as a rapid response method for slope collapse during the flood season due to its ease of operation, suppressing the development of danger by constructing temporary cofferdams or overfilling with riprap; steel sheet pile support technology, with its advantage of pile driving efficiency, is widely used for temporary slope protection during the construction period. In permanent reinforcement schemes, cement-soil mixing pile / high-pressure jet grouting pile technology, relying on its in-situ reinforcement characteristics, has become the mainstream choice for deep treatment of soft soil foundation embankments, improving the bearing capacity of the foundation through pile-soil consolidation; traditional precast piles and permanent steel sheet piles are mostly used for the reinforcement of embankments around waterways and ports where high durability is required, attempting to resist long-term water erosion and lateral soil displacement through rigid structures.

[0003] While existing technologies have certain applicability in specific scenarios, they struggle to meet the multidimensional needs of soft soil embankment reinforcement, namely, rapid emergency response, good long-term durability, minimal ecological impact, and cost-effectiveness. The core issues are concentrated in the following three aspects. First, the technology functions are fragmented, and temporary measures cannot be integrated with permanent solutions: backfilling / rockfill counterweight requires occupying the river channel's flood control section, and the boulders are prone to "disintegration" due to long-term erosion, requiring repeated replenishment later; temporary sheet piles can only control surface slippage and cannot form an integral anti-slip structure with the embankment, allowing the middle and lower sliding surfaces to continue to develop, while permanent sheet piles, although improving durability, have high costs for rust prevention and maintenance throughout their entire life cycle, and the corrosion rate will be accelerated in the alternating fresh and salt water environment. Secondly, there is a significant conflict between reinforcement effectiveness and construction safety: Cement-soil mixing piles / high-pressure jet grouting piles rely on slow soil consolidation. In situations where the embankment slope is already unstable or under-stability, construction disturbances can easily lead to a situation where "the more reinforcement, the more unstable it becomes." Traditional precast piles, due to limitations in cross-sectional shape, generally have a pile spacing greater than 1.5m, resulting in weak anti-sliding performance of the soil between piles. Furthermore, non-prestressed piles are prone to shrinkage cracks, accelerating steel corrosion and shortening their service life to 15-20 years. Thirdly, there is an imbalance between economic efficiency and ecological considerations: The unit price of high-pressure jet grouting piles is 2-3 times that of cement-soil mixing piles, and the material cost of permanent steel sheet piles is 40% higher than that of traditional precast piles. At the same time, backfilling / rockfilling reduces the flood discharge cross-section of the river channel, restricting the improvement of the navigation channel grade, which contradicts the current needs of "ecological water conservancy" construction.

[0004] Therefore, there is an urgent need for a composite reinforcement method for soft soil embankments based on emergency support of prestressed corrugated piles to solve the problems of temporary emergency and permanent rupture, construction disturbance instability, high cost and encroachment on river channels, and difficulty in balancing efficiency and ecology in existing technologies. Summary of the Invention

[0005] To address these issues, this invention provides a composite reinforcement method and device for soft soil embankments based on emergency support using prestressed corrugated piles. This solves the problems of existing technologies where emergency and permanent reinforcement are disconnected, temporary measures are difficult to integrate, and permanent solutions are costly. It overcomes the performance contradictions arising from construction disturbance leading to instability, weak anti-sliding soil between piles, and easy corrosion of the piles. Simultaneously, it solves the problems of traditional technologies occupying river channels, high costs, and conflicting with ecological and water conservancy requirements.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a composite reinforcement method for soft soil embankment slopes based on prestressed corrugated pile emergency support, comprising: The engineering geological conditions of the proposed reinforced embankment slope and its affected area were investigated, and investigation data were obtained. Based on the survey data, by setting a slope stability analysis strategy, the stability of the proposed reinforced embankment under set working conditions is calculated to obtain the natural state safety factor; based on the natural state safety factor, the state of the proposed reinforced embankment is judged to obtain the state result of the proposed reinforced embankment. Based on the survey data and the status results, the temporary construction platform and composite reinforcement zone for cement-soil mixing piles, the prestressed corrugated piles and the three-dimensional drainage system were designed respectively, and the design scheme was completed. Based on the design scheme, the following steps were carried out in sequence: technical and safety briefing for construction technicians, material preparation and inspection, preparation and debugging of construction machinery and equipment, construction surveying and setting out, and completion of construction preparation. Based on the aforementioned construction preparations, the following construction procedures were carried out in sequence: construction of a temporary platform for cement-soil mixing piles and a composite reinforcement zone; construction of prestressed corrugated piles; construction of an integrated base-cap beam structure; construction of a three-dimensional drainage system; and construction of embankment restoration and slope protection works, thus completing the reinforcement construction.

[0007] As a preferred option for the composite reinforcement method of soft soil embankment based on prestressed corrugated pile emergency support, the stability safety factor of the embankment to be reinforced meets the following requirements after the reinforcement construction is completed: ; In the formula, The stability safety factor after reinforcement; The safety factor is the factor for the natural state. The anti-slip increment provided for prestressed corrugated piles; The anti-sliding increment provided for cement-soil mixing piles; The effective coefficient of the drainage system; The coefficient for the synergistic effect of the two piles; This is the slope stability safety factor.

[0008] As a preferred option for the composite reinforcement method of soft soil embankment based on emergency support of prestressed corrugated piles, the process of investigating the engineering geological conditions of the embankment to be reinforced and its influence range requires investigating the distribution range, thickness, physical and mechanical properties of soft soil layers such as silty soil, as well as the spatial distribution characteristics and properties of strata such as plain fill, silty clay, and fine sand in the embankment body; investigating the groundwater level, groundwater type and its corrosiveness to concrete and steel bars; investigating whether there are cracks, bulges, signs of sliding, collapse and instability in the embankment, as well as the fluctuation of river water level, the impact of ship waves, and existing structures.

[0009] As a preferred embodiment of the composite reinforcement method for soft soil embankments based on prestressed corrugated pile emergency support, in the process of judging the state of the embankment to be reinforced based on the natural state safety factor, if Then the embankment slope is in an unstable state; if If so, the embankment slope is in an unstable state; if If so, the embankment slope is in a stable state.

[0010] As a preferred option for the composite reinforcement method of soft soil embankment based on prestressed corrugated pile emergency support, the design scheme of the temporary construction platform and composite reinforcement zone for cement-soil mixing piles is as follows: Based on The design includes a temporary construction platform of width L on the riverside, with piles of 0.5m diameter, spacing of 0.6-1m, row spacing of 0.6-1m, and arranged in a quincunx pattern. The pile bottoms will penetrate the most dangerous slip arc ≥1m. The platform will be partially excavated and partially backfilled, with a stepped excavation slope ratio of 1:1 and a backfill slope ratio ≤1:2. The mixing piles will be constructed in two phases, with the second phase implemented after the first phase reaches 70% strength, to reduce cumulative soil disturbance. The design scheme for prestressed corrugated piles is as follows: based on The design incorporates a single row of prestressed corrugated piles at the slope protection base, with fully embedded piles and the pile bottom penetrating ≥2m into the hard soil layer; the base also serves as a capping beam, forming an integrated structure, with the pile top embedded ≥0.1m into the base and anchored by anchor bars, and the piles connected by tongue and groove joints to form a continuous slab wall; the pile driving process adopts the "graded static pressure" process. The design scheme for the three-dimensional drainage system is as follows: 50cm thick replacement fill within 1.5m of the inner side of the base, with a gradation of 5-20mm and a permeability coefficient ≥1×10⁻⁶. -3 A gravel filter layer with a density of cm / s is integrated with longitudinal and transverse filter trenches on the slope to construct a three-dimensional drainage network.

[0011] This invention also provides a composite reinforcement device for soft soil embankment slopes based on emergency support of prestressed corrugated piles, and the composite reinforcement method for soft soil embankment slopes based on emergency support of prestressed corrugated piles includes: The survey data acquisition module is used to survey the engineering geological conditions of the proposed reinforced embankment and its area of ​​influence, and to obtain survey data. The safety factor calculation and embankment state judgment module is used to calculate the stability of the embankment to be reinforced under set working conditions based on the survey data and by setting a slope stability analysis strategy, so as to obtain the natural state safety factor; and to judge the state of the embankment to be reinforced based on the natural state safety factor, so as to obtain the state result of the embankment to be reinforced. The design scheme formulation module is used to design the temporary construction platform and composite reinforcement zone of cement-soil mixing piles, prestressed corrugated piles and three-dimensional drainage system based on the survey data and the status results, and complete the design scheme. The construction preparation module is used to sequentially conduct technical and safety briefings for construction technicians, prepare and inspect materials, prepare and debug construction machinery and equipment, and conduct construction surveying and setting out, based on the design scheme, to complete the construction preparation. The reinforcement construction module is used to sequentially carry out the construction of the temporary platform and composite reinforcement zone for cement-soil mixing piles, the construction of prestressed corrugated piles, the construction of the integrated base-cap beam structure, the construction of the three-dimensional drainage system, and the construction of the embankment restoration and slope protection project based on the aforementioned construction preparation, thereby completing the reinforcement construction.

[0012] As a preferred embodiment of the composite reinforcement device for soft soil embankments based on prestressed corrugated pile emergency support, in the reinforcement construction module, after the reinforcement construction is completed, the stability safety factor of the embankment to be reinforced satisfies the following: ; In the formula, The stability safety factor after reinforcement; The safety factor is the factor for the natural state. The anti-slip increment provided for prestressed corrugated piles; The anti-sliding increment provided for cement-soil mixing piles; The effective coefficient of the drainage system; The coefficient for the synergistic effect of the two piles; This is the slope stability safety factor.

[0013] As a preferred solution for a composite reinforcement device for soft soil embankments based on prestressed corrugated pile emergency support, the survey data acquisition module, during the survey of the engineering geological conditions of the embankment to be reinforced and its influence range, needs to investigate the distribution range, thickness, physical and mechanical properties of soft soil layers such as silty soil, as well as the spatial distribution characteristics and properties of strata such as plain fill, silty clay, and fine sand in the embankment body; investigate the groundwater level, groundwater type and its corrosivity to concrete and steel bars; investigate whether there are cracks, bulges, signs of sliding, collapse and instability in the embankment, as well as conditions such as river water level fluctuations, the impact of ship waves, and existing structures.

[0014] As a preferred embodiment of the composite reinforcement device for soft soil embankments based on prestressed corrugated pile emergency support, in the safety factor calculation and embankment state judgment module, during the process of judging the state of the embankment to be reinforced based on the natural state safety factor, if... Then the embankment slope is in an unstable state; if If so, the embankment slope is in an unstable state; if If so, the embankment slope is in a stable state.

[0015] As a preferred embodiment of the composite reinforcement device for soft soil embankments based on prestressed corrugated pile emergency support, the design scheme of the cement-soil mixing pile temporary construction platform and the composite reinforcement zone in the design scheme formulation module is as follows: based on The design includes a temporary construction platform of width L on the riverside, with piles of 0.5m diameter, spacing of 0.6-1m, row spacing of 0.6-1m, and arranged in a quincunx pattern. The pile bottoms will penetrate the most dangerous slip arc ≥1m. The platform will be partially excavated and partially backfilled, with a stepped excavation slope ratio of 1:1 and a backfill slope ratio ≤1:2. The mixing piles will be constructed in two phases, with the second phase implemented after the first phase reaches 70% strength, to reduce cumulative soil disturbance. The design scheme for prestressed corrugated piles is as follows: based on The design incorporates a single row of prestressed corrugated piles at the slope protection base, with fully embedded piles and the pile bottom penetrating ≥2m into the hard soil layer; the base also serves as a capping beam, forming an integrated structure, with the pile top embedded ≥0.1m into the base and anchored by anchor bars, and the piles connected by tongue and groove joints to form a continuous slab wall; the pile driving process adopts the "graded static pressure" process. The design scheme for the three-dimensional drainage system is as follows: 50cm thick replacement fill within 1.5m of the inner side of the base, with a gradation of 5-20mm and a permeability coefficient ≥1×10⁻⁶. -3 A gravel filter layer with a density of cm / s is integrated with longitudinal and transverse filter trenches on the slope to construct a three-dimensional drainage network.

[0016] This invention has the following advantages: It obtains survey data by investigating the engineering geological conditions of the proposed reinforced embankment and its influence area; based on the survey data, it calculates the stability of the proposed reinforced embankment under set working conditions by setting a slope stability analysis strategy, obtaining a natural state safety factor; based on the natural state safety factor, it judges the state of the proposed reinforced embankment, obtaining the state result; based on the survey data and the state result, it designs the temporary platform for cement-soil mixing piles and the composite reinforcement area, the prestressed corrugated piles and the three-dimensional drainage system, completing the design scheme; based on the design scheme, it sequentially conducts technical and safety briefings for construction technicians, material preparation and inspection, preparation and debugging of construction machinery and equipment, and construction surveying and setting out, completing the construction preparation; based on the construction preparation, it sequentially constructs the temporary platform for cement-soil mixing piles and the composite reinforcement area, drives the prestressed corrugated piles, constructs the integrated base-cap beam structure, constructs the three-dimensional drainage system, and carries out embankment restoration and slope protection engineering, completing the reinforcement construction. This invention achieves seamless integration of emergency support and permanent reinforcement through a ternary coupling design of prestressed corrugated piles, cement-soil mixing piles, and a three-dimensional drainage system. It can quickly curb the instability of embankments and eradicate deep-seated sliding risks. It can also improve pile driving efficiency and shorten the construction period through prefabrication construction. The curved pile cross-section and integrated structural design save concrete usage and reduce overall costs. At the same time, the three-dimensional drainage system can efficiently drain groundwater to prevent slope toe softening and does not occupy river space, which meets the requirements of ecological water conservancy. Furthermore, it can ensure construction safety through sequential construction and strict quality control. Overall, it takes into account emergency response, long-term durability, economic efficiency, and ecological friendliness. It is suitable for the reinforcement of soft foundation embankments in complex conditions such as navigable waterways and floodplains. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Figure 1This is a flowchart illustrating the composite reinforcement method for soft soil embankments based on emergency support using prestressed corrugated piles, as provided in Embodiment 1 of the present invention.

[0020] Figure 2 This is a schematic diagram of the specific implementation process of the composite reinforcement method for soft soil embankment based on emergency support of prestressed corrugated piles provided in Embodiment 1 of the present invention.

[0021] Figure 3 This is a schematic diagram of the reinforced area of ​​the cement-soil mixing pile in the composite reinforcement method for soft soil embankment based on emergency support of prestressed waveform piles provided in Embodiment 1 of the present invention.

[0022] Figure 4 This is a schematic diagram of the interface of the H-BZ-250-Ⅰ type medium-arc sheet pile in the composite reinforcement method for soft soil embankment based on emergency support of prestressed waveform piles provided in Embodiment 1 of the present invention.

[0023] Figure 5 This is a schematic diagram of the H-BZ-250-Ⅰ type medium-arc sheet pile structure of the composite reinforcement method for soft soil embankments based on emergency support of prestressed waveform piles provided in Embodiment 1 of the present invention.

[0024] Figure 6 This is a schematic diagram of the plan layout of the H-BZ-250-Ⅰ type medium-arc sheet pile in the composite reinforcement method for soft soil embankment based on emergency support of prestressed waveform piles provided in Embodiment 1 of the present invention.

[0025] Figure 7 This is a schematic diagram of the drainage system of the middle embankment slope in the composite reinforcement method for soft soil embankment slope based on emergency support of prestressed corrugated piles provided in Embodiment 1 of the present invention.

[0026] Figure 8 This is a typical cross-sectional schematic diagram of the middle embankment slope reinforcement method based on prestressed corrugated pile emergency support provided in Embodiment 1 of the present invention.

[0027] Figure 9 This is a schematic diagram of the composite reinforcement device for soft soil embankment based on emergency support of prestressed corrugated piles provided in Embodiment 2 of the present invention. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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. Example 1

[0029] See Figure 1 and Figure 2 Embodiment 1 of the present invention provides a composite reinforcement method for soft soil embankment slopes based on emergency support of prestressed corrugated piles, comprising the following steps: S1. Conduct an investigation into the engineering geological conditions of the proposed reinforced embankment and its affected area, and obtain investigation data; S2. Based on the survey data, by setting a slope stability analysis strategy, the stability of the proposed reinforced embankment under the set working conditions is calculated to obtain the natural state safety factor; based on the natural state safety factor, the state of the proposed reinforced embankment is judged to obtain the state result of the proposed reinforced embankment. S3. Based on the survey data and the status results, design the temporary platform and composite reinforcement zone of cement-soil mixing piles, the prestressed corrugated piles and the three-dimensional drainage system respectively, and complete the design scheme. S4. Based on the design scheme, conduct technical and safety briefings for construction technicians, prepare and inspect materials, prepare and debug construction machinery and equipment, and conduct construction surveying and setting out to complete construction preparation. S5. Based on the aforementioned construction preparation, proceed sequentially with the construction of the temporary construction platform and composite reinforcement zone for cement-soil mixing piles, the driving of prestressed corrugated piles, the construction of the integrated base-cap beam structure, the construction of the three-dimensional drainage system, and the construction of the embankment restoration and slope protection works, thereby completing the reinforcement construction.

[0030] In this embodiment, in step S1, the engineering geological conditions of the embankment to be reinforced and its influence range are investigated to obtain investigation data.

[0031] Specifically, the investigation will be conducted through a combination of drilling, in-situ testing, and laboratory experiments. The focus will be on determining the distribution range, thickness, and spatial characteristics of soft soil layers within the proposed reinforced embankment and its surrounding area. The physical and mechanical properties of major soil layers, such as silty clay, fine loose sand, will be measured, including water content, void ratio, shear strength, and compression coefficient. Simultaneously, the depth of groundwater, groundwater type, and its corrosiveness to concrete and steel reinforcement will be investigated. Furthermore, the current state of the embankment will be surveyed on-site, recording any signs of instability such as cracks, bulges, sliding, or collapse, as well as surrounding environmental parameters, such as river level fluctuations, the impact range of ship waves, and the location of existing structures. All investigation information will be compiled into standardized investigation data to provide accurate data for subsequent stability analysis and design.

[0032] In this embodiment, in step S2, based on the survey data, the stability of the proposed reinforced embankment under the set working conditions is calculated by setting a slope stability analysis strategy to obtain the natural state safety factor; based on the natural state safety factor, the state of the proposed reinforced embankment is judged to obtain the state result of the proposed reinforced embankment.

[0033] Specifically, firstly, based on information such as soil layer parameters and groundwater level from the survey data, a slope stability analysis strategy that conforms to the actual engineering situation is set, typically using the Bishop method as the core analysis method. The set working conditions need to cover common stress scenarios of the embankment slope, including normal water level conditions, seasonal sudden water level drops (simulating water level fluctuations of 6-10m), and rainstorm seepage conditions. A slope stability calculation model is then constructed using analysis software, inputting the physical and mechanical parameters of each soil layer to calculate the natural state safety factor of the embankment slope under different working conditions. Subsequently, according to Numerical assessment of embankment slope condition: If It was determined to be in an unstable state, posing a risk of landslides and collapses; if It is determined to be in an unstable state, easily induced by construction disturbances; if ( The design stability safety factor of the embankment slope is used to determine that it is in a basically stable state, and the above determination result will be used as the core basis for determining the parameters of the subsequent design scheme.

[0034] In this embodiment, in step S3, based on the survey data and the status results, the temporary construction platform and composite reinforcement zone of cement-soil mixing piles, prestressed corrugated piles and three-dimensional drainage system are designed respectively, and the design scheme is completed.

[0035] Specifically, the design scheme for the temporary platform for cement-soil mixing piles and the composite reinforcement zone is as follows: First, the location and width of the temporary platform are determined. Based on stability calculations, a temporary platform for cement-soil mixing pile construction is arranged in the middle of the river-facing embankment slope. The platform width L needs to be determined comprehensively based on the operating space of construction machinery, the construction range of the mixing piles, and the stability requirements of the embankment slope.

[0036] Then, the design parameters for the mixing piles were determined. The pile diameter was 0.5m; the pile spacing and row spacing were set to 0.6-1m based on the requirements of reinforcement effect and economy, using a staggered arrangement to enhance the integrity and uniformity of the reinforced area. The number of rows of mixing piles was designed to be n, so that the composite reinforcement zone formed could effectively block the deep sliding path. The bottom of the piles must pass through the minimum slip arc obtained from the stability calculation by no less than 1m to ensure effective control of deep sliding.

[0037] Further design of the temporary platform structure was carried out. The temporary construction platform adopts a semi-excavation and semi-backfilling method, with stepped excavation and an average excavation slope ratio of 1:1; the backfill slope ratio is not steeper than 1:2, so as to ensure the stability of the platform during construction.

[0038] In this embodiment, the design scheme for the prestressed corrugated pile is as follows: Regarding the selection and layout of pile types, based on slope stability analysis, a single row of prestressed corrugated piles will be installed along the foundation alignment of the slope protection project, using a fully embedded installation method. The selection of prestressed corrugated piles includes: model, material, performance parameters, and connection method.

[0039] Regarding the embedment depth, the top of the prestressed corrugated pile should be embedded at least 0.1m into the subsequently poured foundation, and the bottom of the pile should penetrate at least 1.0m into the relatively hard soil layer. The length of the prestressed corrugated pile needs to be determined based on geological conditions and anti-sliding requirements.

[0040] When designing prestressed corrugated piles, the foundation of the slope protection project is simultaneously used as the capping beam of the corrugated piles, forming an integrated coupled structure of foundation-capping beam. In designing this structure, it is necessary to consider its ability to effectively transfer the horizontal force borne by the corrugated piles to the deeper parts of the embankment slope, and to work in conjunction with the cement-soil mixing pile composite reinforcement zone to jointly resist embankment slippage.

[0041] In this embodiment, the design scheme for the three-dimensional drainage system is as follows: For the gravel filter layer, the topsoil within a 1.5m radius inside the foundation needs to be replaced with a 50cm thick gravel filter layer. The optimized gradation of this filter layer is 5-20mm, and the design permeability coefficient is not less than 1×10⁻⁶. -3 cm / s, to efficiently guide seepage.

[0042] At the same time, pre-designed longitudinal and transverse drainage channels were laid out at the bottom of the slope protection. The longitudinal channels were arranged along the embankment line, while the transverse channels were connected to the longitudinal channels to form a grid.

[0043] By integrating the gravel filter layer with longitudinal and transverse filter trenches, a complete three-dimensional spatial drainage network is constructed to optimize groundwater flow, reduce pore water pressure, and prevent soil softening at the toe of the slope.

[0044] In this embodiment, in step S4, based on the design scheme, the construction technicians are given technical and safety briefings, materials are prepared and inspected, construction machinery and equipment are prepared and debugged, and construction surveying and setting out are carried out in sequence to complete the construction preparation.

[0045] Specifically, the first step is to conduct technical preparation and scheme briefing, organizing construction technicians to familiarize themselves with design drawings, geological survey reports, construction specifications, and the technical requirements of this invention. Detailed construction organization designs and specialized construction plans, including emergency response plans, are prepared, and thorough technical and safety briefings are conducted to ensure all construction personnel clearly understand the construction process, key technical parameters, and quality and safety control points.

[0046] After completing the technical preparation and scheme briefing, material preparation and inspection are carried out. Specifically, the following are the preparation and inspection of prestressed corrugated piles: They are prefabricated by the factory according to the design requirements. When they arrive on site, their factory certificate of conformity, concrete strength report, prestressing tensioning record, etc. must be checked. The appearance of the piles is also checked for cracks, damage, deformation, and dimensional deviations. They can only be used after they meet the requirements.

[0047] 2. Preparation and Inspection of Cement-Soil Mixing Pile Materials: Select cement that meets design requirements, such as PO 42.5 grade ordinary Portland cement. Appropriate admixtures may be added if necessary. Cement arriving on site must have a certificate of conformity, and samples must be taken and tested according to regulations to ensure that its strength, stability, and other indicators meet the requirements. Soft soil is used as a reinforcing material; its properties are determined during the exploration stage. During construction, attention must be paid to identifying the relatively hard soil layer into which the pile tip enters.

[0048] 3. Preparation and inspection of filter bed materials: Purchase gravel with a gradation of 5~20mm, ensuring that it is clean, free of impurities, and that the mud content meets the design requirements, and conduct random checks on its permeability coefficient.

[0049] 4. Preparation and inspection of other materials: such as steel bars used in the foundation-cap beam and geogrid, must meet the design and specification requirements and be inspected and qualified before they can be used.

[0050] In this embodiment, material preparation and inspection also require the preparation and debugging of construction machinery and equipment. Appropriate cement-soil mixing pile machines, prestressed corrugated pile driving equipment, excavators, loaders, compaction machinery, measuring instruments, and drainage equipment are provided for the prepared materials. All machinery and equipment undergo comprehensive inspection, maintenance, and debugging to ensure their good performance and compliance with construction requirements.

[0051] After the construction machinery and equipment are prepared and debugged, construction surveying and setting out are carried out. According to the design drawings, using surveying instruments such as total stations, the excavation and filling boundary lines of the temporary platform for cement-soil mixing piles, the pile positions of the mixing piles, the axis and pile positions of the prestressed corrugated piles, the outline of the base-cap beam, and the location of the drainage system are accurately set out. At the same time, necessary control stakes and leveling points are set up and protected.

[0052] In this embodiment, in step S5, based on the construction preparation, the construction of the temporary platform for cement-soil mixing pile construction and the composite reinforcement zone, the prestressed corrugated pile driving construction, the construction of the integrated structure of the base-crown beam, the construction of the three-dimensional drainage system, and the construction of the embankment restoration and slope protection project are carried out in sequence to complete the reinforcement construction.

[0053] Specifically, such as Figure 3 As shown, the construction process of the temporary platform and composite reinforcement zone for cement-soil mixing pile construction is as follows: 1. Semi-excavation and semi-backfilling construction of the temporary platform: During excavation, the temporary platform should be excavated according to the designed stepped excavation slope ratio of 1:1. During excavation, close monitoring of slope stability is essential, and appropriate temporary support measures should be taken as necessary. Excavated soil, except for a portion used for backfilling, should be stockpiled at designated locations to avoid affecting construction or causing environmental pollution.

[0054] When carrying out backfilling and compaction operations, for the parts of the platform that need backfilling, appropriate fill material should be used, prioritizing the use of qualified excavated soil or high-quality soil transported from elsewhere. Backfilling should be carried out in layers according to the designed fill slope ratio, which should not be steeper than 1:2. The thickness of each backfill layer should not be too large, generally 30-50cm, and compaction should be performed using rolling mills, with the compaction degree meeting design requirements. If required by the design, geogrids can be installed in the backfill area to enhance the integrity of the soil and eliminate potential settlement risks.

[0055] 2. Cement-soil mixing pile construction: First, move the cement-soil mixing pile machine to the designated pile position, and adjust the verticality and horizontality of the pile machine to ensure that the verticality deviation of the pile meets the specifications.

[0056] Then, the mixing piles are constructed in two phases. First, the first phase of drilling is carried out. After the first phase of drilling is completed and the cement-soil strength reaches 70% of the design strength, the second phase of drilling is carried out. By constructing the piles in sequence, the construction stress is effectively dispersed, the cumulative soil disturbance caused by continuous pile driving is suppressed, the stability of the embankment slope is protected during construction, and the risk of "the more it is reinforced, the more unstable it becomes" is avoided.

[0057] After the mixing pile construction is completed, a "four-mixing-four-spraying" or "four-mixing-two-spraying" construction process is adopted to ensure that the cement slurry is evenly mixed with the soft soil. Strict control is maintained over drilling speed, lifting speed, grouting pressure, water-cement ratio, and cement usage. During the process, the pile diameter is controlled at 0.5m, and the pile spacing and row spacing are strictly implemented according to the designed 0.6-1m staggered pattern.

[0058] During construction, it is ensured that the bottom of the pile passes through the minimum slip arc with the stability coefficient by no less than 1 meter. The pile length is strictly controlled during construction using depth counters or markers. Simultaneously, pile position deviation, pile verticality, cement usage, and pile depth are monitored and recorded in real time during construction.

[0059] In this embodiment, the prestressed corrugated pile driving process is as follows: after the temporary platform for cement-soil mixing piles reaches the design strength and can provide a stable working surface, the prestressed corrugated pile driving construction is carried out.

[0060] First, the pile positions of the prestressed corrugated piles are checked to ensure accuracy. The hydraulic static pile driver is then moved to the pile position, and its position is adjusted so that the center of the pile hammer is aligned with the center of the pile position.

[0061] Then, using suitable lifting equipment, the precast H-BZ-250-Ⅰ type prestressed concrete curved sheet pile is lifted into the pile driver clamping device, and the pile is slowly inserted into the pile position to initially adjust the verticality of the pile. The structure and arrangement of the H-BZ-250-Ⅰ type curved sheet pile are as follows: Figure 4 , Figure 5 and Figure 6 As shown.

[0062] After hoisting, the piles are driven using a "staged static pressure" process. The initial pressure is controlled at 100kN, and then gradually and steadily increased to the design final pressure of 250~300kN. During the pile driving process, the verticality, settlement, and pressure changes of the piles are closely monitored. If any abnormalities are encountered, pile driving should be stopped immediately, the cause analyzed, and appropriate measures taken before construction can continue. After one pile has been driven to the predetermined depth, the next pile is hoisted, and its tongue and groove are accurately aligned with the tongue and groove of the previous pile to ensure a tight connection and effective transfer of horizontal loads. Care must be taken to protect the tongue and groove from damage during the pile driving process.

[0063] During pile driving, the pile top elevation must be strictly controlled to ensure that the pile top is embedded 0.5m into the subsequently poured foundation-cap beam. Simultaneously, after each pile is driven, its positional deviation, verticality deviation, pile top elevation, and pile integrity must be checked.

[0064] In this embodiment, the construction process of the integrated base-cap beam structure is as follows: After the prestressed corrugated piles are constructed, the integrated base-cap beam structure is constructed. This structure serves as both the base for the slope protection project and the cap beam for the corrugated piles.

[0065] First, clean the top of the corrugated piles, removing laitance and loose concrete to expose fresh concrete, ensuring a good bond between the pile top and the base-capping beam. If the design requires pre-reinforced steel bars at the pile top, adjust the position and length of the bars accordingly. Then, tie the reinforcement bars for the base-capping beam according to the design drawings, ensuring the specifications, quantity, spacing, and protective layer thickness meet the requirements. After the reinforcement binding is completed and accepted, install the side formwork. The formwork should have sufficient strength, rigidity, and stability, with tight joints to prevent grout leakage. The formwork installation position, elevation, and cross-sectional dimensions should meet the design requirements. After the formwork is installed, pour concrete matching the design strength grade C35. The concrete should be vibrated to ensure compaction, ensuring the strength and durability of the components. Protect the pile heads of the prestressed corrugated piles during pouring. After the concrete is poured, promptly cover and moisturize it for at least 14 days to ensure the concrete strength meets the design requirements.

[0066] In this embodiment, as Figure 7 As shown, the construction process of the three-dimensional drainage system is as follows: After the concrete strength of the base-cap beam reaches a certain level, the three-dimensional drainage system is constructed. First, within a 1.5m radius inside the base, the topsoil is excavated to the design depth, and then replaced with a 50cm thick gravel filter layer. The gravel gradation is strictly controlled between 5 and 20mm, and it should be laid in layers with appropriate watering and compaction to ensure its permeability coefficient is not less than 1×10⁻⁶. - 3 cm / s.

[0067] After completing the gravel filter layer construction, excavate longitudinal and transverse filter trenches at the bottom of the slope protection according to the design location and dimensions. Lay permeable geotextile in the trenches, then fill them with gravel of the same gradation as the filter layer to form blind filter trenches. Ensure that the longitudinal and transverse trenches are interconnected and effectively connected to the gravel filter layer to form a three-dimensional drainage network.

[0068] In this embodiment, the construction process of the embankment restoration and slope protection project is as follows: After the prestressed corrugated pile construction is completed and the foundation-cap beam and drainage system are basically formed, the original embankment slope excavation area from the construction of the temporary cement-soil mixing pile platform will be filled and restored. Soil with properties similar to the original embankment slope will be used for layered backfilling, with each layer thickness controlled at 30-50cm. Compaction will be carried out using rollers, with a compaction degree of not less than 0.93. The additional fill added during the temporary platform construction will be excavated to restore the original embankment slope's safe slope ratio. After the above embankment slope restoration is completed, subsequent sub-layers, drainage systems, and surface layers of the slope protection project will be systematically constructed, such as masonry, dry-laid stone, precast concrete blocks, and vegetation slope protection, according to design requirements. This ensures that the slope protection structure works in tandem with the foundation-cap beam and drainage system to jointly protect the embankment slope.

[0069] In this embodiment, a typical cross-sectional view of the reinforced embankment slope is shown below. Figure 8 As shown. After the reinforcement construction is completed, the stability safety factor of the embankment slope to be reinforced meets the following requirements: ; In the formula, The stability safety factor after reinforcement; The safety factor is the factor for the natural state. The anti-slip increment provided for prestressed corrugated piles; The anti-sliding increment provided for cement-soil mixing piles; The effective coefficient of the drainage system; The coefficient for the synergistic effect of the two piles; This is the slope stability safety factor.

[0070] The application scenarios of this invention are as follows: This invention is mainly applied to the reinforcement and treatment of soft soil foundation embankments in the field of water conservancy engineering. Firstly, it addresses the emergency treatment of soft soil embankments that have already experienced instability risks such as landslides and collapses, including sudden rises and falls in water levels during the flood season causing bulging and cracking of the embankment slope, which can be quickly contained by prestressed corrugated piles. Secondly, it provides preventative reinforcement for soft soil embankments in an unstable state, i.e., utilizing the natural safety factor. First, for dike slopes that are susceptible to instability due to construction disturbances, composite reinforcement can be used to avoid the risk of instability. Second, for the long-term management of soft-foundation dikes in highly disturbed environments such as navigable waterways and floodplains, it can resist the scouring of ship waves and the erosion of the slope toe by a flood flow that occurs once every 50 years, while not reducing the flood discharge section or affecting the waterway grade, and taking into account the needs of emergency rescue, permanent reinforcement and ecological protection.

[0071] It should be noted that the method of this disclosure embodiment can be executed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the method of this disclosure embodiment, and the multiple devices will interact with each other to complete the method described.

[0072] It should be noted that the above description describes some embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous. Example 2

[0073] See Figure 9 Embodiment 2 of the present invention also provides a composite reinforcement device for soft soil embankment slopes based on emergency support of prestressed corrugated piles, comprising: The survey data acquisition module 001 is used to survey the engineering geological conditions of the proposed reinforced embankment and its influence range, and obtain survey data. The safety factor calculation and embankment state judgment module 002 is used to calculate the stability of the embankment to be reinforced under set working conditions based on the survey data and by setting a slope stability analysis strategy, so as to obtain the natural state safety factor; and to judge the state of the embankment to be reinforced based on the natural state safety factor, so as to obtain the state result of the embankment to be reinforced. The design scheme formulation module 003 is used to design the temporary platform and composite reinforcement zone of cement-soil mixing piles, the prestressed corrugated piles and the three-dimensional drainage system based on the survey data and the status results, and to complete the design scheme. The construction preparation module 004 is used to sequentially conduct technical and safety briefings for construction technicians, prepare and inspect materials, prepare and debug construction machinery and equipment, and conduct construction surveying and setting out, based on the design scheme, to complete the construction preparation. The reinforcement construction module 005 is used to carry out the following construction processes in sequence, based on the aforementioned construction preparation: construction of a temporary platform for cement-soil mixing piles and composite reinforcement zone; construction of prestressed corrugated piles; construction of an integrated base-cap beam structure; construction of a three-dimensional drainage system; and construction of embankment restoration and slope protection engineering, thereby completing the reinforcement construction.

[0074] In this embodiment, in the reinforcement construction module 005, after the reinforcement construction is completed, the stability safety factor of the embankment to be reinforced satisfies: ; In the formula, The stability safety factor after reinforcement; The safety factor is the factor for the natural state. The anti-slip increment provided for prestressed corrugated piles; The anti-sliding increment provided for cement-soil mixing piles; The effective coefficient of the drainage system; The coefficient for the synergistic effect of the two piles; This is the slope stability safety factor.

[0075] In this embodiment, the survey data acquisition module 001, during the survey of the engineering geological conditions of the proposed reinforced embankment and its influence range, needs to investigate the distribution range, thickness, physical and mechanical properties of soft soil layers such as silty soil, as well as the spatial distribution characteristics and properties of strata such as plain fill soil, silty clay, and fine sand in the embankment body; investigate the groundwater level, groundwater type and its corrosiveness to concrete and steel bars; investigate whether there are cracks, bulges, signs of sliding, collapse and instability in the embankment, as well as the fluctuation of river water level, the impact of ship waves, and existing structures.

[0076] In this embodiment, in the safety factor calculation and embankment state judgment module 002, during the process of judging the state of the embankment to be reinforced based on the natural state safety factor, if Then the embankment slope is in an unstable state; if If so, the embankment slope is in an unstable state; if If so, the embankment slope is in a stable state.

[0077] In this embodiment, the design scheme of the temporary construction platform for cement-soil mixing piles and the composite reinforcement zone in the design scheme formulation module 003 is as follows: based on The design includes a temporary construction platform of width L on the riverside, with piles of 0.5m diameter, spacing of 0.6-1m, row spacing of 0.6-1m, and arranged in a quincunx pattern. The pile bottoms will penetrate the most dangerous slip arc ≥1m. The platform will be partially excavated and partially backfilled, with a stepped excavation slope ratio of 1:1 and a backfill slope ratio ≤1:2. The mixing piles will be constructed in two phases, with the second phase implemented after the first phase reaches 70% strength, to reduce cumulative soil disturbance. The design scheme for prestressed corrugated piles is as follows: Based on design 1, a single row of prestressed corrugated piles is arranged at the slope protection base, with fully embedded piles and the pile bottom penetrating the hard soil layer by ≥2m; the base also serves as a capping beam, forming an integrated structure, with the pile top embedded in the base by ≥0.1m and anchored by anchor bars, and the piles are connected by tongue and groove to form a continuous slab wall; the piles are driven using the "graded static pressure" process. The design scheme for the three-dimensional drainage system is as follows: 50cm thick replacement fill within 1.5m of the inner side of the base, with a gradation of 5-20mm and a permeability coefficient ≥1×10⁻⁶. -3 A gravel filter layer with a density of cm / s is integrated with longitudinal and transverse filter trenches on the slope to construct a three-dimensional drainage network.

[0078] It should be noted that the information interaction and execution process between the modules of the above system are based on the same concept as the method embodiment in Embodiment 1 of this application, and the resulting technical effects are the same as those in the method embodiment of this application. For details, please refer to the description in the method embodiment shown above in this application, and it will not be repeated here. Example 3

[0079] Embodiment 3 of the present invention provides a non-transitory computer-readable storage medium storing program code for a composite reinforcement method for soft soil embankments based on emergency support of prestressed corrugated piles. The program code includes instructions for executing the composite reinforcement method for soft soil embankments based on emergency support of prestressed corrugated piles as described in Embodiment 1 or any possible implementation thereof.

[0080] Computer-readable storage media can be any available medium that a computer can access, or a data storage device such as a server or data center that integrates one or more available media. The available medium can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)). Example 4

[0081] Embodiment 4 of the present invention provides an electronic device, including: a memory and a processor; the processor and the memory communicate with each other through a bus; the memory stores program instructions that can be executed by the processor, and the processor can execute the composite reinforcement method for soft soil embankment based on emergency support of prestressed corrugated piles according to Embodiment 1 or any possible implementation thereof.

[0082] Specifically, a processor can be implemented in hardware or software. When implemented in hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented in software, the processor can be a general-purpose processor that reads software code stored in memory. This memory can be integrated into the processor or located outside the processor and exist independently.

[0083] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable system. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0084] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing systems. They can be centralized on a single computing system or distributed across a network of multiple computing systems. Optionally, they can be implemented using program code executable by a computing system, thereby storing them in a storage system for execution by the computing system. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0085] The present invention has been described in detail above with general descriptions and specific embodiments. However, modifications or improvements can be made to the present invention, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A composite reinforcement method for soft soil embankment slopes based on emergency support using prestressed corrugated piles, characterized in that, include: The engineering geological conditions of the proposed reinforced embankment slope and its affected area were investigated, and investigation data were obtained. Based on the survey data, by setting a slope stability analysis strategy, the stability of the proposed reinforced embankment under the set working conditions is calculated, and the natural state safety factor is obtained. Based on the natural state safety factor, the state of the proposed reinforced embankment is judged to obtain the state result of the proposed reinforced embankment. Based on the survey data and the status results, the temporary construction platform and composite reinforcement zone for cement-soil mixing piles, the prestressed corrugated piles and the three-dimensional drainage system were designed respectively, and the design scheme was completed. Based on the design scheme, the following steps were carried out in sequence: technical and safety briefing for construction technicians, material preparation and inspection, preparation and debugging of construction machinery and equipment, construction surveying and setting out, and completion of construction preparation. Based on the aforementioned construction preparations, the following construction procedures were carried out in sequence: construction of a temporary platform for cement-soil mixing piles and a composite reinforcement zone; construction of prestressed corrugated piles; construction of an integrated base-cap beam structure; construction of a three-dimensional drainage system; and construction of embankment restoration and slope protection works, thus completing the reinforcement construction.

2. The composite reinforcement method for soft soil embankment slopes based on emergency support using prestressed corrugated piles according to claim 1, characterized in that, After the reinforcement construction is completed, the stability safety factor of the embankment slope to be reinforced meets the following requirements: ； In the formula, The stability safety factor after reinforcement; The safety factor is the factor for the natural state. The anti-slip increment provided for prestressed corrugated piles; The anti-sliding increment provided for cement-soil mixing piles; The effective coefficient of the drainage system; The coefficient for the synergistic effect of the two piles; This is the slope stability safety factor.

3. The composite reinforcement method for soft soil embankment slopes based on emergency support using prestressed corrugated piles according to claim 2, characterized in that, During the investigation of the engineering geological conditions of the proposed reinforced embankment and its affected area, it is necessary to investigate the distribution range, thickness, physical and mechanical properties of the silty soil and soft soil layers, as well as the spatial distribution characteristics and properties of the plain fill, silty clay, and fine sand layers of the embankment body; investigate the groundwater level, groundwater type and its corrosiveness to concrete and steel bars; investigate whether there are cracks, bulges, signs of sliding, collapse and instability of the embankment, as well as the fluctuation of river water level, the impact of ship waves, and the conditions of existing structures.

4. The composite reinforcement method for soft soil embankment slopes based on emergency support using prestressed corrugated piles according to claim 3, characterized in that, In the process of judging the state of the embankment to be reinforced based on the natural state safety factor, if Then the embankment slope is in an unstable state; if If so, the embankment slope is in an unstable state; if If so, the embankment slope is in a stable state.

5. The composite reinforcement method for soft soil embankment slopes based on emergency support using prestressed corrugated piles according to claim 4, characterized in that, The design scheme for the temporary construction platform and composite reinforcement zone for cement-soil mixing piles is as follows: Based on The design includes a temporary construction platform of width L on the riverside, with piles of 0.5m diameter, spacing of 0.6-1m, row spacing of 0.6-1m, and arranged in a quincunx pattern. The pile bottoms will penetrate the most dangerous slip arc ≥1m. The platform will be partially excavated and partially backfilled, with a stepped excavation slope ratio of 1:1 and a backfill slope ratio ≤1:

2. The mixing piles will be constructed in two phases, with the second phase implemented after the first phase reaches 70% strength, to reduce cumulative soil disturbance. The design scheme for prestressed corrugated piles is as follows: based on The design incorporates a single row of prestressed corrugated piles at the slope protection base, with fully embedded piles and the pile bottom penetrating the hard soil layer by ≥2m. The base also serves as a capping beam, forming an integrated structure. The pile top is embedded in the base by ≥0.1m and anchored by anchor bars. The piles are connected by tongue and groove joints to form a continuous slab wall. The pile driving process is "graded static pressure". The design scheme for the three-dimensional drainage system is as follows: 50cm thick replacement fill within 1.5m of the inner side of the base, with a gradation of 5-20mm and a permeability coefficient ≥1×10⁻⁶. -3 A gravel filter layer with a density of cm / s is integrated with longitudinal and transverse filter trenches on the slope to construct a three-dimensional drainage network.

6. A composite reinforcement device for soft soil embankment slopes based on emergency support of prestressed corrugated piles, employing the composite reinforcement method for soft soil embankment slopes based on emergency support of prestressed corrugated piles as described in any one of claims 1-5, characterized in that... include: The survey data acquisition module is used to survey the engineering geological conditions of the proposed reinforced embankment and its area of ​​influence, and to obtain survey data. The safety factor calculation and embankment condition judgment module is used to calculate the stability of the embankment to be reinforced under set working conditions based on the survey data and by setting a slope stability analysis strategy, so as to obtain the natural state safety factor. Based on the natural state safety factor, the state of the proposed reinforced embankment is judged to obtain the state result of the proposed reinforced embankment. The design scheme formulation module is used to design the temporary construction platform and composite reinforcement zone of cement-soil mixing piles, prestressed corrugated piles and three-dimensional drainage system based on the survey data and the status results, and complete the design scheme. The construction preparation module is used to sequentially conduct technical and safety briefings for construction technicians, prepare and inspect materials, prepare and debug construction machinery and equipment, and conduct construction surveying and setting out, based on the design scheme, to complete the construction preparation. The reinforcement construction module is used to sequentially carry out the construction of the temporary platform and composite reinforcement zone for cement-soil mixing piles, the construction of prestressed corrugated piles, the construction of the integrated base-cap beam structure, the construction of the three-dimensional drainage system, and the construction of the embankment restoration and slope protection project based on the aforementioned construction preparation, thereby completing the reinforcement construction.

7. The composite reinforcement device for soft soil embankment slopes based on prestressed corrugated pile emergency support according to claim 6, characterized in that, In the reinforcement construction module, after the reinforcement construction is completed, the stability safety factor of the embankment to be reinforced satisfies: ； In the formula, The stability safety factor after reinforcement; The safety factor is the factor for the natural state. The anti-slip increment provided for prestressed corrugated piles; The anti-sliding increment provided for cement-soil mixing piles; The effective coefficient of the drainage system; The coefficient for the synergistic effect of the two piles; This is the slope stability safety factor.

8. The composite reinforcement device for soft soil embankment slopes based on prestressed corrugated pile emergency support according to claim 7, characterized in that, In the survey data acquisition module, during the survey of the engineering geological conditions of the proposed reinforced embankment and its influence range, it is necessary to investigate the distribution range, thickness, physical and mechanical properties of the silty soil soft soil layer, as well as the spatial distribution characteristics and properties of the embankment fill, silty clay, and fine sand layers; to investigate the groundwater level, groundwater type and its corrosiveness to concrete and steel bars; and to investigate whether there are cracks, bulges, signs of sliding, collapse and instability in the embankment, as well as the fluctuation of river water level, the impact of ship waves, and the conditions of existing structures.

9. The composite reinforcement device for soft soil embankment slopes based on prestressed corrugated pile emergency support according to claim 8, characterized in that, In the safety factor calculation and embankment condition judgment module, during the process of judging the condition of the embankment to be reinforced based on the natural state safety factor, if <1 Then the embankment slope is in an unstable state; if If so, the embankment slope is in an unstable state; if If so, the embankment slope is in a stable state.

10. The composite reinforcement device for soft soil embankment slopes based on prestressed corrugated pile emergency support according to claim 9, characterized in that, In the design scheme formulation module, the design scheme for the temporary construction platform and composite reinforcement zone for cement-soil mixing piles is as follows: Based on The design includes a temporary platform of width L on the riverside, with piles of 0.5m diameter, spacing of 0.6-1m, row spacing of 0.6-1m, arranged in a quincunx pattern, and the pile bottom penetrating the most dangerous slip arc ≥1m; the platform is nearly half excavated and half backfilled, with a stepped excavation slope ratio of 1:1 and a backfill slope ratio ≤1:2; the mixing piles are constructed in two phases, with the second phase implemented after the first phase reaches 70% strength, to reduce cumulative soil disturbance; The design scheme for prestressed corrugated piles is as follows: based on The design incorporates a single row of prestressed corrugated piles at the slope protection base, with fully embedded piles and the pile bottom penetrating the hard soil layer by ≥2m. The base also serves as a capping beam, forming an integrated structure. The pile top is embedded in the base by ≥0.1m and anchored by anchor bars. The piles are connected by tongue and groove joints to form a continuous slab wall. The pile driving process is "graded static pressure". The design scheme for the three-dimensional drainage system is as follows: 50cm thick replacement fill within 1.5m of the inner side of the base, with a gradation of 5-20mm and a permeability coefficient ≥1×10⁻⁶. -3 A gravel filter layer with a density of cm / s is integrated with longitudinal and transverse filter trenches on the slope to construct a three-dimensional drainage network.

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