Municipal road subgrade protection engineering construction process

Abstract

The invention discloses a municipal road subgrade protection engineering construction technology, and relates to the technical field of municipal road construction, and the municipal road subgrade protection engineering construction technology comprises the following steps: S1, geological investigation and evaluation; s2, roadbed design and optimization; s3, drainage system design and water conservancy project; s4, roadbed reinforcement treatment; s5, roadbed material selection and quality control; s6, roadbed construction and compaction; s7, protecting and reinforcing the side slope; s8, roadbed monitoring and maintenance; and S9, implementing environmental protection and energy saving measures and performing construction safety management. By implementing detailed geological investigation and evaluation, scientific design and optimization, targeted reinforcement treatment, strict quality control and a comprehensive monitoring and maintenance system and integrating environmental protection and energy saving concepts, the stability and durability of the municipal road subgrade are improved, geological and environmental risks are effectively avoided, and the safety and reliability of the municipal road subgrade are improved. The rationality and safety of the road structure are ensured, meanwhile, resource saving and environment protection are promoted, and a solid foundation is laid for smoothness and safety of urban traffic.

Description

Technical Field

[0001] The invention relates to the technical field of municipal road construction, in particular to a municipal road subgrade protection project construction process. Background Art

[0002] Municipal roads refer to urban roads, which are an indispensable and important part of urban infrastructure projects and an important symbol of a city's modernization. Municipal roads are mainly divided into five levels according to their position in the road network, traffic functions and service functions along the line, but the most common ones are four types: urban expressways, main roads, secondary roads and branch roads.

[0003] Municipal roads are an important part of urban transportation, and their stability and safety are directly related to the smoothness of traffic and the safety of citizens. However, the construction of municipal roads faces complex geological conditions and changeable environmental factors, especially in areas with poor geological conditions, complex hydrological conditions or heavy traffic loads. The stability and durability of the roadbed face severe challenges. Traditional roadbed protection engineering construction technology often lacks systematic geological surveys and assessments, resulting in unreasonable designs and non-standard construction, which in turn causes a series of problems such as roadbed settlement and slope instability. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and propose a construction process for municipal road subgrade protection projects to address the complex geological and environmental challenges faced by municipal road construction in the above technical solutions. Especially under harsh conditions, traditional subgrade protection technologies often lead to improper design and construction due to the lack of systematic investigation and evaluation, causing settlement, slope instability and other problems.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: A construction process of a municipal road subgrade protection project comprises the following steps: S1: geological survey and assessment: before construction, a detailed geological survey is conducted on the proposed road area to assess the geological conditions, hydrological conditions and potential address disaster risks; S2: Roadbed design and optimization: Design and optimize the roadbed based on the geological survey results, combined with the road usage requirements and traffic load characteristics; S3: Drainage system design and hydraulic engineering: Design and construct drainage systems including drainage ditches, drainage pipes, etc.; S4: Roadbed reinforcement: Take appropriate reinforcement measures for areas with poor geological conditions or heavy traffic loads; S5: Roadbed material selection and quality control: Select appropriate roadbed materials and conduct strict quality control; S6: Roadbed construction and compaction: Use appropriate construction methods and equipment to construct and compact the roadbed in layers; S7: Slope protection and reinforcement: Protect and reinforce the roadbed slope; S8: Roadbed monitoring and maintenance: After construction is completed, the roadbed shall be regularly monitored and maintained; S9: Implementation of environmental protection and energy-saving measures and construction safety management: During the construction process, environmental protection and energy-saving measures shall be taken, and construction safety management systems and measures shall be established.

[0006] As a preferred implementation, the S1 geological survey and assessment step specifically includes S11, geological profile analysis: obtaining geological profile data of the proposed road area through drilling, pit exploration and other means, analyzing the stratigraphic structure, rock and soil properties and distribution patterns; S12, hydrological condition investigation: detailed investigation of groundwater level, flow direction, flow velocity and water quality, and assessment of the possible impact of groundwater on roadbed construction and operation; S13, geological disaster risk assessment: using professional knowledge such as geomechanics and hydrogeology, combined with historical geological disaster records, to assess possible landslides, mudslides and other disasters in the area. S14. Earthquake activity analysis: Analyze regional earthquake activity, evaluate the impact of earthquakes on roadbed stability, and provide a basis for designing reasonable earthquake-resistant measures; S15. Soil bearing capacity test: Determine soil bearing capacity through in-situ tests (such as static penetration tests, etc.) and laboratory tests to provide key parameters for roadbed design; S16. Comprehensive evaluation report: Based on the results of the above-mentioned various surveys, prepare a detailed geological survey and evaluation report to clarify the geological conditions, hydrological conditions and geological disaster risks, and provide a scientific basis for subsequent roadbed design and construction.

[0007] The beneficial effect of adopting the above further plan is: through detailed geological survey and evaluation, including geological profile analysis, hydrological condition investigation, geological disaster risk assessment, seismic activity analysis and soil bearing capacity testing, comprehensive and accurate geological data are provided for municipal road subgrade protection projects, ensuring the scientificity and rationality of subsequent subgrade design and construction, and effectively reducing construction risks and costs.

[0008] As a preferred implementation method, S3 drainage system design and hydraulic steps specifically include S31, drainage demand analysis: according to factors such as road grade, traffic flow, rainfall intensity, etc., analyze drainage demand and determine the design standard and scale of the drainage system; S32, drainage material selection: according to the use requirements and geological conditions of the drainage system, select suitable drainage materials, such as permeable concrete, drainage boards, HDPE drainage pipes, etc., to ensure the long-term stable operation of the drainage system; S33, drainage system layout design: combined with the longitudinal and cross-sectional design of the road, reasonably layout drainage facilities such as drainage ditches and drainage pipes to ensure that rainwater on the road surface can be quickly and smoothly discharged into the drainage system; S34, drainage system construction: strictly follow the design drawings and construction specifications to construct the drainage system to ensure that the size, location, slope, etc. of the drainage facilities meet the design requirements; S35, drainage system maintenance: regularly clean and maintain the drainage system to prevent blockage and damage, ensure unimpeded drainage, and at the same time, establish a drainage system monitoring mechanism to promptly detect and deal with drainage problems.

[0009] The beneficial effects of adopting the above further scheme are: through drainage demand analysis, drainage material selection, drainage system layout design, drainage system construction and maintenance, the effectiveness and long-term stable operation of the municipal road subgrade drainage system are ensured, effectively preventing road surface waterlogging and subgrade damage, and improving the road's traffic capacity and service life.

[0010] As a preferred implementation method, the S4 roadbed reinforcement treatment step specifically includes S41, reinforcement demand analysis: according to the geological survey results and roadbed design requirements, analyze the necessity of roadbed reinforcement and determine the scope and degree of reinforcement; S42, reinforcement scheme selection: according to the reinforcement needs, select a suitable reinforcement scheme, such as laying geogrids, grouting reinforcement, anchor reinforcement, etc. For soft foundations, reinforcement methods such as replacement filling and deep mixing can be used; S43, reinforcement material selection: according to the reinforcement scheme, select suitable reinforcement materials, such as geogrids, grouting materials, anchors, etc., to ensure the reinforcement effect; S44, reinforcement construction: strictly follow the reinforcement plan to ensure the effective implementation of reinforcement measures. At the same time, strictly control the quality of the reinforcement process to ensure that the reinforcement effect meets the design requirements; S45, reinforcement effect monitoring: regularly monitor the reinforced roadbed, evaluate the reinforcement effect, and promptly discover and deal with potential problems.

[0011] The beneficial effect of adopting the above further scheme is: for areas with poor geological conditions or heavy traffic loads, through reinforcement demand analysis, reinforcement scheme selection, reinforcement material selection, reinforcement construction and reinforcement effect monitoring, the stability and bearing capacity of the roadbed are effectively improved, ensuring the safety and durability of municipal roads.

[0012] As a preferred implementation method, S5 roadbed material selection and quality control step specifically includes S51, material demand analysis: according to the roadbed design requirements, analyze the types, specifications, quantities, etc. of the required materials; S52, material selection: according to the material demand analysis, select suitable roadbed materials, such as gravel, sand, lime soil, etc. When selecting materials, the physical and mechanical properties, stability, durability and other factors of the materials should be fully considered; S53, material quality control: strict quality control of the selected materials, including indicators such as the appearance quality, moisture content, and particle grading of the materials; S54, material storage and transportation: formulate reasonable material storage and transportation plans to ensure that the materials are not contaminated and damaged during storage and transportation.

[0013] The beneficial effects of adopting the above further scheme are: through material demand analysis, material selection, material quality control, and strict control of material storage and transportation, the quality and stability of municipal road subgrade materials are ensured, which provides strong guarantee for the construction quality of the subgrade, while reducing material costs and environmental impact.

[0014] As a preferred implementation mode, S6 roadbed construction and compaction steps specifically include S61, construction preparation: before construction, clean and level the construction site to ensure that the construction conditions meet the requirements. At the same time, formulate a detailed construction plan and construction scheme to clarify the construction steps, construction methods, construction equipment, etc.; S62, layered construction: according to the roadbed design requirements, the roadbed is divided into multiple construction layers, and construction is carried out layer by layer. Before the construction of each layer, the lower layer should be inspected to ensure that the quality of the lower layer meets the requirements; S63, construction method selection: according to the type and characteristics of the roadbed material, select a suitable construction method, such as mechanical construction, manual construction, etc. For areas that are difficult for large mechanical equipment to reach, small mechanical equipment or manual construction can be used; S64, compaction process optimization: according to the actual situation of the construction site, optimize the compaction process, including adjusting parameters such as compaction speed, frequency and compaction depth, to ensure that the compaction effect meets the design requirements. At the same time, strictly control the quality during the compaction process to ensure uniform and dense compaction; S65, construction monitoring and acceptance: during the construction process, the construction quality and compaction effect of the roadbed are monitored and accepted in real time.

[0015] The beneficial effects of adopting the above further scheme are: through construction preparation, layered construction, construction method selection, compaction process optimization, and construction monitoring and acceptance, the standardization and compaction effect of the municipal road subgrade construction process are ensured, the density and uniformity of the subgrade are improved, and a solid foundation is provided for the long-term use of the road.

[0016] As a preferred implementation method, the S7 slope protection and reinforcement step specifically includes S71, slope stability assessment: using advanced slope stability assessment methods and technologies to quantitatively analyze and evaluate the stability of the slope, including slope mechanical parameter determination, slope deformation monitoring, slope stability calculation, etc.; S72, reinforcement scheme design: according to the slope stability assessment results and reinforcement requirements, select a suitable reinforcement scheme, the reinforcement scheme should include the selection of reinforcement measures, the selection of reinforcement materials, reinforcement construction methods, etc.; S73, reinforcement material selection: according to the reinforcement scheme, select suitable reinforcement materials, such as grouting materials, anchor rods, geogrids, etc.; S74, reinforcement construction: strictly follow the reinforcement plan to ensure the effective implementation of reinforcement measures; S75, slope monitoring and maintenance: after the reinforcement construction is completed, the slope is regularly monitored and maintained, including slope deformation monitoring, reinforcement effect evaluation, etc.

[0017] The beneficial effects of adopting the above further scheme are: through slope stability assessment, reinforcement scheme design, reinforcement material selection, reinforcement construction, and slope monitoring and maintenance, the stability and safety of municipal road slopes are effectively improved, the occurrence of disasters such as slope instability and landslides is reduced, and safe road traffic is guaranteed.

[0018] As a preferred implementation method, the S8 roadbed monitoring and maintenance step specifically includes S81, monitoring method selection: according to the use requirements and geological conditions of the roadbed, select appropriate monitoring methods and technologies, including displacement monitoring, stress monitoring, settlement monitoring, etc.; S82, monitoring equipment layout: arrange monitoring equipment at key parts and potential dangerous areas of the roadbed, such as displacement sensors, stress sensors, settlement observation marks, etc., to ensure that the monitoring equipment can accurately reflect the deformation and stress state of the roadbed; S83, monitoring data analysis: regularly analyze and process the monitoring data to evaluate the stability and safety of the roadbed; S84, maintenance measures formulation: according to the monitoring results and actual conditions, formulate corresponding maintenance measures and plans, including repairing damaged parts, strengthening weak links, cleaning drainage systems, etc., to ensure the long-term stability and safety of the roadbed; S85, maintenance construction management: strictly manage the maintenance construction to ensure the quality and safety of the maintenance construction. At the same time, establish a maintenance construction file to record the process and results of the maintenance construction to provide a reference for subsequent maintenance.

[0019] The beneficial effects of adopting the above further scheme are: by selecting appropriate monitoring methods and technologies, arranging monitoring equipment, analyzing monitoring data, and formulating and implementing maintenance measures, comprehensive monitoring and maintenance of municipal road subgrades are achieved, potential problems of the subgrade are discovered and dealt with in a timely manner, the long-term stability and safety of the road are ensured, and the service life of the road is extended.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are: The present invention improves the stability and durability of the municipal roadbed by implementing detailed geological surveys and assessments, scientific design and optimization, targeted reinforcement treatments, strict quality control, a comprehensive monitoring and maintenance system, and integrating environmental protection and energy-saving concepts, effectively avoiding geological and environmental risks, ensuring the rationality and safety of the road structure, and at the same time promoting resource conservation and environmental protection, laying a solid foundation for the smoothness and safety of urban traffic. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the overall implementation flow chart of the construction process of municipal road subgrade protection engineering; Figure 2 It is a flow chart for the implementation of geological survey and assessment of the construction process of municipal road subgrade protection projects; Figure 3 It is a flow chart of the drainage system design and hydraulic implementation of the construction process of municipal road subgrade protection projects; Figure 4 It is a flow chart for the implementation of roadbed reinforcement treatment in the construction process of municipal road roadbed protection projects; Figure 5 It is a flow chart for the implementation of roadbed material selection and quality control in the construction process of municipal road subgrade protection projects; Figure 6 It is a flow chart of the construction process of the municipal road subgrade protection project and the implementation of subgrade construction and compaction; Figure 7 It is a flow chart for the implementation of slope protection and reinforcement in the construction process of municipal road subgrade protection projects; Figure 8 It is a flow chart for the implementation of subgrade monitoring and maintenance of the construction process of municipal road subgrade protection projects. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the present invention provides a technical solution: a construction process for a municipal road subgrade protection project, comprising the following steps: S1: geological survey and assessment: before construction, a detailed geological survey is conducted on the proposed road area to assess the geological conditions, hydrological conditions and potential address disaster risks; S2: Roadbed design and optimization: Design and optimize the roadbed based on the geological survey results, combined with the road usage requirements and traffic load characteristics; S3: Drainage system design and hydraulic engineering: Design and construct drainage systems including drainage ditches, drainage pipes, etc.; S4: Roadbed reinforcement: Take appropriate reinforcement measures for areas with poor geological conditions or heavy traffic loads; S5: Roadbed material selection and quality control: Select appropriate roadbed materials and conduct strict quality control; S6: Roadbed construction and compaction: Use appropriate construction methods and equipment to construct and compact the roadbed in layers; S7: Slope protection and reinforcement: Protect and reinforce the roadbed slope; S8: Roadbed monitoring and maintenance: After construction is completed, the roadbed shall be regularly monitored and maintained; S9: Implementation of environmental protection and energy-saving measures and construction safety management: During the construction process, environmental protection and energy-saving measures shall be taken, and construction safety management systems and measures shall be established.

[0024] Specifically, the S1 geological survey and assessment steps include S11, geological profile analysis: through drilling, pit exploration and other means, obtain geological profile data of the proposed road area, analyze the stratigraphic structure, rock and soil properties and distribution patterns; S12, hydrological condition investigation: detailed investigation of groundwater level, flow direction, flow velocity and water quality, and assessment of the possible impact of groundwater on roadbed construction and operation; S13, geological disaster risk assessment: using professional knowledge such as geomechanics and hydrogeology, combined with historical geological disaster records, assess the risk level of geological disasters such as landslides, mudslides, and ground collapse that may occur in the region; S14, earthquake activity analysis: analyze regional earthquake activity, assess the impact of earthquakes on roadbed stability, and provide a basis for designing reasonable earthquake-resistant measures; S15, soil bearing capacity test: through in-situ tests (such as static penetration tests, etc.) and laboratory tests, determine soil bearing capacity to provide key parameters for roadbed design; S16, comprehensive evaluation report: based on the above various Based on the survey results, a detailed geological survey and assessment report is compiled to clarify the geological conditions, hydrological conditions and geological disaster risks, providing a scientific basis for the subsequent roadbed design and construction; among them, the static penetration test is suitable for evaluating the bearing capacity, deformation parameters and treatment effect of natural foundations such as soft soil, general clay, silt and sand, and the foundation after replacement of cushion layers, preloading, compaction, compaction and tamping. The test measures the soil's specific penetration resistance ps through a single-bridge probe and the soil's end resistance ps through a double-bridge probe. The three-function pore pressure probe can simultaneously measure qc, fs, penetration pore pressure uo and dissipated pore pressure ut. When there are other exploration holes near the static penetration hole, the penetration hole should be arranged in an area at least 30 times the probe diameter away from the original exploration hole. When conducting comparative tests, the hole spacing should not exceed 2m, and static penetration should be carried out first before other exploration and tests. The penetration rate of the penetration should be controlled at (1.2±0.3) m / min and maintained at a uniform speed. When the penetration depth exceeds 30m or it is necessary to penetrate through a thick layer of soft soil and then penetrate into a hard soil layer, effective measures should be taken to prevent the hole from tilting.

[0025] Specifically, the S3 drainage system design and hydraulic steps include S31, drainage demand analysis: according to factors such as road grade, traffic flow, rainfall intensity, etc., analyze drainage demand and determine the design standard and scale of the drainage system; S32, drainage material selection: according to the use requirements and geological conditions of the drainage system, select suitable drainage materials, such as permeable concrete, drainage boards, HDPE drainage pipes, etc., to ensure the long-term stable operation of the drainage system; S33, drainage system layout design: combined with the longitudinal and cross-sectional design of the road, reasonably layout drainage facilities such as drainage ditches and drainage pipes to ensure that rainwater on the road surface can be quickly and smoothly discharged into the drainage system; S34, drainage system construction: strictly follow the design drawings and construction specifications to construct the drainage system to ensure that the size, location, slope, etc. of the drainage facilities meet the design requirements; S35, drainage system maintenance: regularly clean and maintain the drainage system to prevent blockage and damage, ensure unimpeded drainage, and at the same time, establish a drainage system monitoring mechanism to promptly detect and deal with drainage problems.

[0026] Specifically, the S4 roadbed reinforcement treatment steps include S41, reinforcement demand analysis: according to the geological survey results and roadbed design requirements, analyze the necessity of roadbed reinforcement, and determine the scope and degree of reinforcement; S42, reinforcement scheme selection: according to the reinforcement needs, select a suitable reinforcement scheme, such as laying geogrids, grouting reinforcement, anchor reinforcement, etc. For soft foundations, replacement filling method, deep mixing method and other reinforcement methods can be used; S43, reinforcement material selection: according to the reinforcement plan, select appropriate reinforcement materials, such as geogrids, grouting materials, anchors, etc., to ensure the reinforcement effect; S44, reinforcement construction: strictly follow the reinforcement plan to ensure the effective implementation of reinforcement measures. At the same time, strictly control the quality of the reinforcement process to ensure Ensure that the reinforcement effect meets the design requirements; S45, reinforcement effect monitoring: Regularly monitor the reinforced roadbed, evaluate the reinforcement effect, and promptly discover and deal with potential problems; Among them, the replacement method is to remove the poor surface foundation soil, backfill with soil with good compaction characteristics for compaction or tamping, and form a good bearing layer, thereby improving the bearing capacity of the foundation. This method is simple to construct and mainly involves equipment such as excavators and rollers. The implementation condition is that the surface foundation soil is poor and needs to be improved; the deep mixing method is to use cement slurry or cement (lime powder) as the main curing agent, and use a special deep mixing machine to send the curing agent into the foundation soil for forced mixing to form a cement (lime) soil pile (column) body, which forms a composite foundation with the original foundation. This process requires the use of deep mixing machinery, mortar pumps and other equipment. The implementation conditions are usually to reinforce soft foundations such as saturated soft clay to improve the foundation strength and stability.

[0027] Specifically, the S5 roadbed material selection and quality control steps include S51, material demand analysis: according to the roadbed design requirements, analyze the types, specifications, quantities, etc. of the required materials; S52, material selection: according to the material demand analysis, select suitable roadbed materials, such as crushed stone, sand, lime soil, etc. When selecting materials, the physical and mechanical properties, stability, durability and other factors of the materials should be fully considered; S53, material quality control: strict quality control of the selected materials, including indicators such as the appearance quality, moisture content, and particle grading of the materials; S54, material storage and transportation: Develop reasonable material storage and transportation plans to ensure that the materials are not contaminated or damaged during storage and transportation; the appearance quality of the materials should meet basic requirements such as flatness, no cracks, and no impurities; the moisture content is required to be close to the optimal moisture content to ensure compaction effect and stability; in terms of particle grading, for asphalt concrete base, the nominal maximum aggregate size should be 19.0mm or 26.5mm; the nominal maximum aggregate size of cement-stabilized aggregate, graded crushed stone or gravel should be 26.5mm or 19.0mm, and the content of fine particles less than 0.075mm shall not be greater than 5%.

[0028] Specifically, the S6 roadbed construction and compaction steps include S61. Construction preparation: Before construction, clean and level the construction site to ensure that the construction conditions meet the requirements. At the same time, formulate a detailed construction plan and construction program to clarify the construction steps, construction methods, construction equipment, etc.; S62. Layered construction: According to the roadbed design requirements, the roadbed is divided into multiple construction layers, and construction is carried out layer by layer. Before the construction of each layer, the lower layer should be inspected to ensure that the quality of the lower layer meets the requirements; S63. Selection of construction methods: According to the type and characteristics of the roadbed material, select the appropriate construction method, such as mechanical construction, manual construction, etc. For areas that are difficult for large mechanical equipment to reach, small mechanical equipment or manual construction can be used; S64. Compaction process optimization: According to the construction The compaction process is optimized according to the actual situation of the construction site, including adjusting parameters such as compaction speed, frequency and compaction depth to ensure that the compaction effect meets the design requirements. At the same time, the quality of the compaction process is strictly controlled to ensure uniform and dense compaction. S65. Construction monitoring and acceptance: During the construction process, the construction quality and compaction effect of the roadbed are monitored and accepted in real time. Among them, the compaction process needs to be optimized according to the actual situation of the construction site. Usually the compaction speed is controlled at 2-4km / h, and the compaction frequency is determined according to the material properties and the capacity of the compaction equipment. Generally, it is necessary to ensure that there are enough rolling times to achieve the compaction degree required by the design. At the same time, the compaction depth should ensure that each layer of roadbed material is fully compacted to form a uniform and dense structure.

[0029] Specifically, the S7 slope protection and reinforcement steps include S71, slope stability assessment: using advanced slope stability assessment methods and technologies to quantitatively analyze and evaluate the stability of the slope, including the determination of the mechanical parameters of the slope, slope deformation monitoring, slope stability calculation, etc.; S72, reinforcement scheme design: according to the slope stability assessment results and reinforcement requirements, select a suitable reinforcement scheme. The reinforcement scheme should include the selection of reinforcement measures, the selection of reinforcement materials, the method of reinforcement construction, etc.; S73, reinforcement material selection: according to the reinforcement scheme, select appropriate reinforcement materials, such as grouting materials, anchor rods, geogrids, etc.; S74, reinforcement construction: strictly follow the reinforcement plan to ensure the effective implementation of reinforcement measures; S75, slope monitoring and maintenance: after the reinforcement construction is completed, the slope is regularly monitored and maintained, including slope deformation monitoring, reinforcement effect evaluation, etc.

[0030] Specifically, the S8 roadbed monitoring and maintenance steps include S81, monitoring method selection: according to the use requirements and geological conditions of the roadbed, select appropriate monitoring methods and technologies, including displacement monitoring, stress monitoring, settlement monitoring, etc.; S82, monitoring equipment layout: arrange monitoring equipment at key parts and potential dangerous areas of the roadbed, such as displacement sensors, stress sensors, settlement observation marks, etc., to ensure that the monitoring equipment can accurately reflect the deformation and stress state of the roadbed; S83, monitoring data analysis: regularly analyze and process the monitoring data to evaluate the stability and safety of the roadbed; S84, maintenance measures formulation: according to the monitoring results and actual conditions, formulate corresponding maintenance measures and plans, including repairing damaged parts, strengthening weak links, cleaning drainage systems, etc., to ensure the long-term stability and safety of the roadbed; S85, maintenance construction management: strictly manage the maintenance construction to ensure the quality and safety of the maintenance construction. At the same time, establish a maintenance construction file to record the process and results of the maintenance construction to provide a reference for subsequent maintenance.

[0031] Working principle: Through detailed geological survey and assessment before construction, the geological and hydrological conditions and potential geological disaster risks are clarified, and the roadbed is designed and optimized accordingly; then an efficient drainage system is designed and constructed to ensure smooth drainage of the road surface; appropriate roadbed reinforcement measures are taken for areas with poor geological conditions or heavy traffic loads; the quality of roadbed materials is carefully selected and strictly controlled; scientific construction methods and equipment are used for layered construction and compaction of the roadbed; stability assessment and reinforcement treatment of the roadbed slopes are carried out; after construction is completed, the roadbed is regularly monitored and maintained to ensure its long-term stability; at the same time, during the construction process, attention is paid to environmental protection and energy conservation, and a sound construction safety management system is established. This series of steps together constitute the working principle of the invention patent, which aims to ensure the safety, stability and durability of the municipal roadbed.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. The construction process of municipal road subgrade protection engineering is characterized by: The following steps are involved: S1: Geological survey and assessment: Before construction, a detailed geological survey shall be conducted on the proposed road area to assess the geological conditions, hydrological conditions and potential geohazard risks; S2: Roadbed design and optimization: Design and optimize the roadbed based on the geological survey results, combined with the road usage requirements and traffic load characteristics; S3: Drainage system design and hydraulic engineering: Design and construct drainage systems including drainage ditches, drainage pipes, etc.; S4: Roadbed reinforcement: Take appropriate reinforcement measures for areas with poor geological conditions or heavy traffic loads; S5: Roadbed material selection and quality control: Select appropriate roadbed materials and conduct strict quality control; S6: Roadbed construction and compaction: Use appropriate construction methods and equipment to construct and compact the roadbed in layers; S7: Slope protection and reinforcement: Protect and reinforce the roadbed slope; S8: Roadbed monitoring and maintenance: After construction is completed, the roadbed shall be regularly monitored and maintained; S9: Implementation of environmental protection and energy-saving measures and construction safety management: During the construction process, environmental protection and energy-saving measures shall be taken, and construction safety management systems and measures shall be established.

2. The municipal road subgrade protection engineering construction process according to claim 1 is characterized in that: S1 Geological survey and assessment steps specifically include S11, geological profile analysis: through drilling, pit exploration and other means, obtain geological profile data of the proposed road area, analyze the stratigraphic structure, rock and soil properties and distribution patterns; S12, hydrological condition investigation: detailed investigation of groundwater level, flow direction, flow rate and water quality, and assessment of the possible impact of groundwater on roadbed construction and operation; S13, geological disaster risk assessment: using professional knowledge such as geomechanics and hydrogeology, combined with historical geological disaster records, to assess possible landslides, mudslides, and ground collapses in the area Risk level of geological disasters such as landslides and road subgrades; S14, earthquake activity analysis: analyze regional earthquake activity, evaluate the impact of earthquakes on roadbed stability, and provide a basis for designing reasonable earthquake-resistant measures; S15, soil bearing capacity test: determine soil bearing capacity through in-situ tests (such as static penetration tests, etc.) and laboratory tests, and provide key parameters for roadbed design; S16, comprehensive evaluation report: based on the results of the above-mentioned various surveys, prepare a detailed geological survey and evaluation report to clarify the geological conditions, hydrological conditions and geological disaster risks, and provide a scientific basis for subsequent roadbed design and construction.

3. The municipal road subgrade protection engineering construction process according to claim 1 is characterized in that: S3 Drainage system design and hydraulic engineering steps specifically include S31, Drainage demand analysis: According to factors such as road grade, traffic flow, rainfall intensity, etc., analyze drainage demand and determine the design standard and scale of the drainage system; S32, Drainage material selection: According to the use requirements and geological conditions of the drainage system, select suitable drainage materials, such as permeable concrete, drainage boards, HDPE drainage pipes, etc., to ensure the long-term stable operation of the drainage system; S33, Drainage system layout design: Combined with the longitudinal and cross-sectional design of the road, reasonably layout drainage facilities such as drainage ditches and drainage pipes to ensure that rainwater on the road surface can be quickly and smoothly discharged into the drainage system; S34, Drainage system construction: Strictly follow the design drawings and construction specifications to construct the drainage system to ensure that the size, location, slope, etc. of the drainage facilities meet the design requirements; S35, Drainage system maintenance: Regularly clean and maintain the drainage system to prevent blockage and damage, ensure unimpeded drainage, and at the same time, establish a drainage system monitoring mechanism to promptly detect and deal with drainage problems.

4. The municipal road subgrade protection engineering construction process according to claim 1 is characterized in that: S4 The specific steps of roadbed reinforcement treatment include S41. Reinforcement demand analysis: According to the geological survey results and roadbed design requirements, analyze the necessity of roadbed reinforcement and determine the scope and degree of reinforcement; S42. Reinforcement scheme selection: According to the reinforcement needs, select a suitable reinforcement scheme, such as laying geogrids, grouting reinforcement, anchor reinforcement, etc. For soft foundations, reinforcement methods such as replacement filling and deep mixing can be used; S43. Reinforcement material selection: According to the reinforcement scheme, select appropriate reinforcement materials, such as geogrids, grouting materials, anchors, etc., to ensure the reinforcement effect; S44. Reinforcement construction: Strictly follow the reinforcement plan to ensure the effective implementation of reinforcement measures. At the same time, strictly control the quality of the reinforcement process to ensure that the reinforcement effect meets the design requirements; S45. Reinforcement effect monitoring: Regularly monitor the reinforced roadbed, evaluate the reinforcement effect, and promptly discover and deal with potential problems.

5. The municipal road subgrade protection engineering construction process according to claim 1 is characterized in that: S5 The specific steps of roadbed material selection and quality control include S51. Material demand analysis: According to the roadbed design requirements, analyze the types, specifications, quantities, etc. of the required materials; S52. Material selection: According to the material demand analysis, select suitable roadbed materials, such as gravel, sand, lime soil, etc. When selecting materials, the physical and mechanical properties, stability, durability and other factors of the materials should be fully considered; S53. Material quality control: Strict quality control of the selected materials, including indicators such as the appearance quality, moisture content, and particle grading of the materials; S54. Material storage and transportation: Develop a reasonable material storage and transportation plan to ensure that the materials are not contaminated or damaged during storage and transportation.

6. The municipal road subgrade protection engineering construction process according to claim 1 is characterized in that: S6 The specific steps of roadbed construction and compaction include S61. Construction preparation: Before construction, clean and level the construction site to ensure that the construction conditions meet the requirements. At the same time, formulate a detailed construction plan and construction scheme to clarify the construction steps, construction methods, construction equipment, etc.; S62. Layered construction: According to the roadbed design requirements, the roadbed is divided into multiple construction layers, and construction is carried out layer by layer. Before the construction of each layer, the lower layer should be inspected to ensure that the quality of the lower layer meets the requirements; S63. Selection of construction methods: According to the type and characteristics of the roadbed material, select a suitable construction method, such as mechanical construction, manual construction, etc. For areas that are difficult for large mechanical equipment to reach, small mechanical equipment or manual construction can be used; S64. Compaction process optimization: According to the actual situation of the construction site, optimize the compaction process, including adjusting parameters such as compaction speed, frequency and compaction depth to ensure that the compaction effect meets the design requirements. At the same time, strictly control the quality during the compaction process to ensure uniform and dense compaction; S65. Construction monitoring and acceptance: During the construction process, the construction quality and compaction effect of the roadbed are monitored and accepted in real time.

7. The municipal road subgrade protection engineering construction process according to claim 1 is characterized by: S7 Slope protection and reinforcement steps specifically include S71, Slope stability assessment: using advanced slope stability assessment methods and technologies to quantitatively analyze and evaluate the stability of the slope, including the determination of slope mechanical parameters, slope deformation monitoring, slope stability calculation, etc.; S72, Reinforcement scheme design: according to the slope stability assessment results and reinforcement needs, select a suitable reinforcement scheme. The reinforcement scheme should include the selection of reinforcement measures, the selection of reinforcement materials, the method of reinforcement construction, etc.; S73, Reinforcement material selection: according to the reinforcement scheme, select appropriate reinforcement materials, such as grouting materials, anchor rods, geogrids, etc.; S74, Reinforcement construction: strictly follow the reinforcement plan to ensure the effective implementation of reinforcement measures; S75, Slope monitoring and maintenance: after the reinforcement construction is completed, the slope is regularly monitored and maintained, including slope deformation monitoring, reinforcement effect evaluation, etc.

8. The municipal road subgrade protection engineering construction process according to claim 1 is characterized by: S8 The specific steps of roadbed monitoring and maintenance include S81, selection of monitoring methods: according to the use requirements and geological conditions of the roadbed, select appropriate monitoring methods and technologies, including displacement monitoring, stress monitoring, settlement monitoring, etc.; S82, arrangement of monitoring equipment: arrange monitoring equipment at key parts and potential dangerous areas of the roadbed, such as displacement sensors, stress sensors, settlement observation markers, etc., to ensure that the monitoring equipment can accurately reflect the deformation and stress state of the roadbed; S83. Monitoring data analysis: Regularly analyze and process monitoring data to evaluate the stability and safety of the roadbed; S84. Development of maintenance measures: According to the monitoring results and actual conditions, formulate corresponding maintenance measures and plans, including repairing damaged parts, reinforcing weak links, cleaning drainage systems, etc., to ensure the long-term stability and safety of the roadbed; S85. Maintenance construction management: Strictly manage maintenance construction to ensure the quality and safety of maintenance construction. At the same time, establish maintenance construction files to record the process and results of maintenance construction to provide reference for subsequent maintenance.

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