Asphalt pavement construction planning method and system based on quantified carcinogenic risk

Abstract

The present invention discloses a method and system for planning the construction of asphalt pavement based on quantitative carcinogenic risk. A genetic algorithm is used to optimize the total working hours of asphalt pavement construction, and the environmental carcinogenic risk of each construction worker is less than a preset threshold as a constraint condition to optimize the allocation plan of construction personnel for concurrent asphalt pavement construction projects. The method aims to provide scientific planning for the personnel allocation of asphalt pavement construction projects, and dynamically adjust the allocation plan of construction personnel by real-time evaluation of the carcinogenic risk of asphalt VOC. While ensuring the health of construction personnel, the project progress is optimized and the work efficiency is improved. The asphalt pavement construction planning method and system based on quantitative carcinogenic risk provided by the present invention can evaluate the carcinogenic risk of construction personnel in real time, and dynamically adjust the allocation plan of construction personnel according to real-time data, thereby achieving a balance between construction progress and personnel health.

Description

Technical Field

[0001] The present invention belongs to the field of road health analysis, and more specifically, relates to an asphalt pavement construction planning method and system based on quantified carcinogenic risk. Background Art

[0002] A large amount of volatile organic compounds (VOCs) are generated during asphalt pavement construction, some of which are significantly carcinogenic, posing a serious threat to the health of construction workers. At present, relevant technologies and policies are committed to improving this problem. For example, the method and system for estimating the ecological environmental load of VOCs emissions from asphalt-based materials (CN 116976698 B) established a carcinogenic risk assessment system through indoor tests and field engineering data, combined with asphalt pavement material construction parameters. The United States Environmental Protection Agency (US EPA) uses a carcinogenic risk index calculation method to quantitatively assess the carcinogenic risk level of construction workers through VOCs exposure concentrations and specific inhalation cancer toxicity factors.

[0003] However, in the actual construction process, due to the characteristics of continuous operation, real-time monitoring of asphalt VOC emissions and their carcinogenic risks faces many challenges. The dynamic changes in the construction environment, including meteorological conditions (such as temperature, humidity, wind speed, etc.) and working parameters (such as construction temperature, mixture type, paving speed, etc.), will significantly affect the release intensity and diffusion range of VOCs. At the same time, factors such as exposure time, protective measures, and individual health status of different construction workers also lead to large individual differences in carcinogenic risk assessment. The existence of these complex factors makes it difficult for construction workers to dynamically adjust their work plans based on real-time data, and they often fall into the dilemma of "focusing on progress and neglecting health" or "focusing on health and delaying work." This phenomenon not only threatens the physical health of construction workers, but may also have an adverse impact on the quality and progress of the project.

[0004] Therefore, developing a comprehensive solution that can assess carcinogenic risks and provide personalized work planning to improve work efficiency has become a key issue that needs to be urgently addressed in the field of asphalt pavement construction. Summary of the invention

[0005] In view of the technical defects of the existing technology that it is difficult to balance the health of construction workers and the progress of the project, the present invention provides an asphalt pavement construction planning method and system based on quantified carcinogenic risk, which uses a genetic algorithm to optimize the total working hours of asphalt pavement construction, and takes the environmental carcinogenic risk of each construction worker less than the preset threshold as a constraint condition to optimize the construction worker allocation plan for concurrent asphalt pavement construction projects. The method aims to provide scientific planning for the personnel allocation of asphalt pavement construction projects, dynamically adjust the construction worker allocation plan by real-time evaluation of the carcinogenic risk of asphalt VOC, optimize the project progress and improve work efficiency while ensuring the health of construction workers.

[0006] To achieve the above object, according to one aspect of the present invention, a method for planning asphalt pavement construction based on quantified carcinogenic risk is provided, comprising the following steps:

[0007] (1) Plan the construction location set based on construction input , and determine each construction location in the set Working parameters ; Get the set of construction personnel involved in the project , and determine each construction worker in the set Construction personnel parameters ;

[0008] (2) Taking minimizing the working hours required for the longest construction location as the optimization goal and taking the environmental carcinogenic risk of each construction worker less than the preset threshold as the constraint condition, a genetic algorithm is used for optimization; where:

[0009] The objective function is written as:

[0010]

[0011] in, For construction location the required working hours;

[0012] Constraints written as:

[0013]

[0014]

[0015] in, It is the first VOC in asphalt. Carcinogenic components on construction location Construction workers Environmental cancer risk, It is the first VOC in asphalt. The carcinogenic risk threshold of the carcinogenic component, Asphalt VOC to construction site Construction workers The total environmental cancer risk Total carcinogenic risk threshold of asphalt VOCs;

[0016] Asphalt VOC Carcinogenic components on construction location Construction workers Environmental cancer risk, , according to the construction location Working condition parameters and construction personnel parameters Sure;

[0017] Asphalt VOC Effects on Construction Location Construction workers Total environmental cancer risk The carcinogenic components contained in asphalt VOC affect the construction site Construction workers The sum of the environmental carcinogenic risks, namely: .

[0018] Preferably, in the asphalt pavement construction planning method based on quantified carcinogenic risk, the specific steps of optimizing step (2) using genetic algorithm are as follows:

[0019] (2-1) Initialize the population: randomly generate a corresponding number of individuals according to the preset population size. Each individual represents a construction personnel allocation plan, which is recorded as the matrix , Indicates construction workers Assigned to construction location ,otherwise , at least one construction worker is assigned to each construction location;

[0020] (2-2) Individual selection: select individuals with higher fitness as parents according to the fitness value and exclude individuals that do not meet the constraints as parents;

[0021] (2-3) Generation Iteration: Use crossover and / or mutation to generate the next generation of individuals and perform individual selection. Iterate until convergence or termination, and finally select the individual that meets the constraints and has the highest fitness. Use the construction personnel allocation scheme represented by the individual to allocate construction personnel.

[0022] Preferably, in the asphalt pavement construction planning method based on quantified carcinogenic risk, the fitness value in step (2-2) is Calculate as follows:

[0023]

[0024] in, For individual The longest construction location required working hours after the construction personnel allocation scheme represented by the construction personnel allocation scheme is allocated. The working hours required By construction location Amount of engineering and the construction crew assigned.

[0025] Preferably, the asphalt pavement construction planning method based on quantified carcinogenic risk has the following characteristics: Carcinogenic components on construction location Construction workers Environmental cancer risk The specific calculation method is as follows:

[0026] S1. Find the emission concentration table of carcinogenic VOC components of asphalt used in construction, and calculate the average daily inhalation of each carcinogenic component in VOC by construction workers. ; The emission concentration table of carcinogenic VOC components of the construction asphalt records: at each design construction temperature The emission concentration of each carcinogenic component is is the maximum number of design construction temperatures, the data of which is obtained a priori by testing the VOC composition of different types of asphalt when heated to the construction temperature;

[0027] S2, step S1, obtain the construction location Construction workers Average daily inhalation of each carcinogenic component in VOC Reference dose for inhalation absorption of corresponding carcinogenic components The ratio of ;

[0028] S3. Construction location obtained according to step (1) Working parameters The temperature difference correction step S2 obtains the construction position of each carcinogenic component Construction workers Estimated cancer risk , evaluate the VOC content of asphalt Carcinogenic components on construction location Construction workers Environmental cancer risk .

[0029] Preferably, the asphalt pavement construction planning method based on quantified carcinogenic risk comprises the following steps: Construction workers For asphalt VOC Average daily inhalation dose of carcinogenic components Calculate as follows:

[0030]

[0031] in, For construction location Construction workers For asphalt VOC Average daily inhalation dose of carcinogenic components; For construction workers Breathing intensity; For construction location Construction workers On-site exposure time, depending on the construction location Project volume Decide; is the weight of the construction workers; For construction location Asphalt pavement material construction temperature The VOC of asphalt The concentration of carcinogenic components is obtained by looking up the emission concentration table of carcinogenic VOC components of construction asphalt.

[0032] Preferably, in the asphalt pavement construction planning method based on quantified carcinogenic risk, step S1 is to obtain the emission concentration table of carcinogenic VOC components of the asphalt used for construction by linear interpolation method, and the specific method is as follows:

[0033]

[0034] in, and It is the adjacent design construction temperature in the table of carcinogenic VOC component emission concentrations of construction asphalt, and , and They are and The VOC content of asphalt Concentration of carcinogenic components.

[0035] Preferably, in the asphalt pavement construction planning method based on quantified carcinogenic risk, the carcinogenic components in step S2 are Reference dose for inhalation absorption It is calculated as follows:

[0036]

[0037] in, The inhalation reference concentration is defined as the concentration at which the risk of non-carcinogenic or non-mutagenic adverse effects of the carcinogenic component is expected to be undetectable when the population, including sensitive subpopulations, is exposed to the carcinogenic component for a lifetime; is the average weight of an adult; The average daily amount of air an adult breathes.

[0038] Preferably, the asphalt pavement construction planning method based on quantified carcinogenic risk, in step S3, evaluates the VOC content of asphalt. Carcinogenic components on construction location Construction workers Environmental cancer risk , the calculation method is as follows:

[0039]

[0040] in, For construction location Asphalt pavement material construction temperature, For construction location The construction environment temperature, For construction location Construction staff Gas temperature at respiratory tract height.

[0041] Preferably, the asphalt pavement construction planning method based on quantified carcinogenic risk has a construction location Construction staff Gas temperature at respiratory tract height , calculated according to the hot air diffusion model, the formula is as follows:

[0042]

[0043] in, For construction workers Height, is the attenuation coefficient, , is the density of air, is the specific heat capacity of air, is the rising speed of hot air, is the thermal conductivity coefficient.

[0044] According to another aspect of the present invention, there is provided an asphalt pavement construction planning system based on quantified carcinogenic risk, which is an electronic device or a non-transitory computer-readable storage medium;

[0045] The electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the asphalt pavement construction planning method based on quantified carcinogenic risk provided by the present invention when executing the program;

[0046] The non-transitory computer-readable storage medium stores a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of the asphalt pavement construction planning method based on quantified carcinogenic risk provided by the present invention.

[0047] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0048] The asphalt pavement construction planning method and system based on quantified carcinogenic risk provided by the present invention can evaluate the carcinogenic risk of construction workers in real time, and dynamically adjust the allocation plan of construction workers according to real-time data, so as to achieve a balance between construction progress and personnel health. The carcinogenic risk assessment method adopted by it only needs to measure the working parameters of the construction site and collect the parameter information of the construction workers to achieve the quantitative assessment of the carcinogenic risk of the construction site, and consider the influence of the ambient temperature of the construction site on the volatilization of asphalt VOC, and correct the carcinogenic risk, providing a more accurate and reliable carcinogenic risk quantitative assessment result, which provides an important basis for effectively promoting asphalt pavement construction under the premise of the health of construction workers, and saves working hours while ensuring the health of construction workers. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] The asphalt pavement construction planning method based on quantified carcinogenic risk provided by the present invention comprises the following steps:

[0051] (1) Plan the construction location set based on construction input , and determine each construction location in the set Working parameters , construction location Working parameters Including engineering quantity , Asphalt pavement material construction temperature , and construction environment temperature ; Get the set of construction personnel involved in the project , and determine each construction worker in the set Construction personnel parameters , construction workers The construction worker parameters include the construction worker weight ,height , and breathing intensity ;

[0052] (2) Taking minimizing the working hours required for the longest construction location as the optimization goal and taking the environmental carcinogenic risk of each construction worker less than the preset threshold as the constraint condition, a genetic algorithm is used for optimization; where:

[0053] The objective function is written as:

[0054]

[0055] in, For construction location The required working hours for the construction location The working hours required By construction location Amount of engineering and the construction workers assigned; in the absence of a specific construction plan, it can be estimated based on the working hours of the construction workers, that is, ,in For construction location The total number of construction workers at the site.

[0056] Constraints written as:

[0057]

[0058]

[0059] in, It is the first VOC in asphalt. Carcinogenic components on construction location Construction workers Environmental cancer risk, It is the first VOC in asphalt. The carcinogenic risk threshold of the carcinogenic component, Asphalt VOC to construction site Construction workers The total environmental cancer risk Total carcinogenic risk threshold of asphalt VOCs.

[0060] Asphalt VOC Carcinogenic components on construction location Construction workers Environmental cancer risk , according to the construction location Working condition parameters and construction personnel parameters Determine, and calculate according to the following method:

[0061] S1. Find the emission concentration table of carcinogenic VOC components of asphalt used in construction, and calculate the average daily inhalation of each carcinogenic component in VOC by construction workers. ; The emission concentration table of carcinogenic VOC components of the construction asphalt records: at each design construction temperature The emission concentration of each carcinogenic component is is the maximum number of design construction temperatures, the data of which is obtained a priori by testing the VOC composition of different types of asphalt when heated to the construction temperature;

[0062] Construction location Construction workers For asphalt VOC Average daily inhalation dose of carcinogenic components Calculate as follows:

[0063]

[0064] in, For construction location Construction workers For asphalt VOC Average daily inhalation dose of carcinogenic components, unit: mg / (kg·d); For construction workers Respiratory intensity, unit: m 3 / h; For construction location Construction workers On-site exposure time, depending on the construction location The amount of work Determination, unit: h, in rough cases, the construction position can also be used Required working hours As an approximation; is the weight of the construction workers, unit: kg; For construction location Asphalt pavement material construction temperature The VOC of asphalt The concentration of the carcinogenic component is obtained by looking up the emission concentration table of carcinogenic VOC components of construction asphalt, preferably by linear interpolation method. The specific method is as follows:

[0065]

[0066] in, and It is the adjacent design construction temperature in the table of carcinogenic VOC component emission concentrations of construction asphalt, and , and They are and The VOC content of asphalt Concentration of carcinogenic components.

[0067] S2, obtain the construction position in step S1 Construction workers Average daily inhalation of each carcinogenic component in VOC Reference dose for inhalation absorption of corresponding carcinogenic components The ratio of ,Right now:

[0068]

[0069] Among them, carcinogenic components Reference dose for inhalation absorption , unit: mg kg -1 ·d -1 , calculated as follows:

[0070]

[0071] in, It is the reference concentration for breathing inhalation, unit: mg·m -3 , defined as the concentration at which the risk of non-carcinogenic or non-mutagenic adverse effects of the carcinogenic component is expected to be undetectable in the population (including sensitive subpopulations) exposed to the carcinogenic component for life, used to characterize the safe upper limit concentration of the carcinogenic component, see Technical Specifications for Health Risk Assessment of Air Pollution (WS / T 666-2019); is the average weight of adults, unit: kg; is the average daily air breathing volume of an adult, unit: m 3 ·d -1 For the calculation method, please refer to the Technical Guidelines for Risk Assessment of Contaminated Sites (HJ 25.3—2014).

[0072] S3. Construction location obtained according to step (1) Working parameters The temperature difference correction step S2 obtains the construction position of each carcinogenic component Construction workers Estimated cancer risk , evaluate the VOC content of asphalt Carcinogenic components on construction location Construction workers Environmental cancer risk , the calculation method is as follows:

[0073]

[0074] in, For construction location Asphalt pavement material construction temperature, For construction location The construction environment temperature, For construction location Construction staff The gas temperature at the respiratory tract height is calculated according to the thermal air diffusion model, and the formula is as follows:

[0075]

[0076] in, For construction workers Height, is the attenuation coefficient, , is the density of air, is the specific heat capacity of air, is the rising speed of hot air, is the thermal conductivity coefficient.

[0077] The difference between the construction temperature of asphalt pavement materials and the ambient temperature determines the cooling curve after the asphalt pavement is laid, affecting the volatilization process of VOCs, while the difference between the gas temperature at the breathing height of construction workers and the ambient temperature determines the diffusion and dilution of VOCs. Therefore, the revised carcinogenic risk value takes into account the volatilization and diffusion factors of VOCs in the actual environment of construction workers, and more accurately reflects the carcinogenic risk. A more comprehensive and comprehensive evaluation of the carcinogenic risk of VOCs should not only consider each carcinogenic component separately, but also comprehensively consider the carcinogenic risks of each carcinogenic component of VOCs, and add up their carcinogenic risk values ​​to reflect the overall carcinogenic risk of VOCs.

[0078] Asphalt VOC Effects on Construction Location Construction workers Total environmental cancer risk The carcinogenic components contained in asphalt VOC affect the construction site Construction workers The sum of the environmental carcinogenic risks, namely: .

[0079] The specific steps of optimization using genetic algorithm are as follows:

[0080] (2-1) Initialize the population: randomly generate a corresponding number of individuals according to the preset population size. Each individual represents a construction personnel allocation plan, which is recorded as the matrix , Indicates construction workers Assigned to construction location ,otherwise , at least one construction worker is assigned to each construction location;

[0081] (2-2) Individual selection: According to the fitness value, individuals with higher fitness are selected as parents and individuals that do not meet the constraints are excluded as parents; fitness value Calculate as follows:

[0082]

[0083] in, For individual The longest construction location required working hours after the construction personnel allocation scheme represented by the construction personnel allocation scheme is allocated. The working hours required By construction location Amount of engineering and the determination of the construction staff assigned;

[0084] (2-3) Generation Iteration: Use crossover and / or mutation to generate the next generation of individuals and perform individual selection. Iterate until convergence or termination, and finally select the individual that meets the constraints and has the highest fitness. Use the construction personnel allocation scheme represented by the individual to allocate construction personnel.

[0085] The following are examples:

[0086] The asphalt pavement construction planning method based on quantified carcinogenic risk provided in this embodiment includes the following steps:

[0087] (1) Plan the construction location set based on construction input , and determine each construction location in the set Working parameters , construction location Working parameters Including engineering quantity , Asphalt pavement material construction temperature , and construction environment temperature ; Get the set of construction personnel involved in the project , and determine each construction worker in the set Construction personnel parameters , construction workers The construction worker parameters include the construction worker weight ,height , and breathing intensity ;

[0088] Usually, asphalt pavement construction projects are large in scale, and generally require the project to be split into multiple construction locations to carry out paving sub-projects in parallel. The total duration of the pavement paving project is determined by the duration of the longest sub-project. Since asphalt pavement construction involves a large number of construction personnel, scientific construction personnel scheduling and resource allocation can effectively shorten the total construction period of the project. The present invention uses a genetic algorithm to achieve construction personnel scheduling.

[0089] However, during the asphalt pavement laying process, the occupational health and safety of construction workers cannot be ignored. Since asphalt materials release volatile organic compounds (VOCs) with carcinogenic risks during the construction process, the occupational health and safety of construction workers must be highly valued during the construction process to prevent them from excessive inhalation of VOC gases with carcinogenic risks. Therefore, it is necessary to comprehensively consider the individual differences of different construction workers, quantitatively evaluate their carcinogenic risk levels in different asphalt pavement construction environments, and conduct detailed analysis in combination with the environmental conditions of the construction site (such as ambient temperature, etc.). On this basis, when allocating and dispatching personnel, the carcinogenic risk of the on-site environment should be taken as an important consideration to achieve a balance between project progress and the health protection of construction workers.

[0090] (2) Taking minimizing the working hours required for the longest construction location as the optimization goal and taking the environmental carcinogenic risk of each construction worker less than the preset threshold as the constraint condition, a genetic algorithm is used for optimization; where:

[0091] The objective function is written as:

[0092]

[0093] in, For construction location The required working hours, , Assigned to construction location The number of construction workers;

[0094] Constraints written as:

[0095]

[0096]

[0097] in, It is the first VOC in asphalt. Carcinogenic components on construction location Construction workers Environmental cancer risk, It is the first VOC in asphalt. The carcinogenic risk threshold of the carcinogenic component, Asphalt VOC to construction site Construction workers The total environmental cancer risk Total carcinogenic risk threshold of asphalt VOCs.

[0098] The specific steps of optimization using genetic algorithm are as follows:

[0099] (2-1) Initialize the population: randomly generate a corresponding number of individuals according to the preset population size. Each individual represents a construction personnel allocation plan, which is recorded as the matrix , Indicates construction workers Assigned to construction location ,otherwise , at least one construction worker is assigned to each construction location;

[0100] (2-2) Individual selection: According to the fitness value, individuals with higher fitness are selected as parents and individuals that do not meet the constraints are excluded as parents; fitness value Calculate as follows:

[0101]

[0102] in, For individual The longest construction location required working hours after the construction personnel allocation scheme represented by the construction personnel allocation scheme is allocated. The working hours required , Assigned to construction location The number of construction workers For construction location The amount of work;

[0103] (2-3) Generation Iteration: Use crossover and / or mutation to generate the next generation of individuals and perform individual selection. Iterate until convergence or termination, and finally select the individual that meets the constraints and has the highest fitness. Use the construction personnel allocation scheme represented by the individual to allocate construction personnel.

[0104] According to the amount of calculation, a fixed number of iterations can be selected; when selecting individuals in each iteration, they are arranged from large to small according to fitness and checked whether the constraints are met. If the constraints are not met, the individual is eliminated, otherwise the individual is selected until the number of individuals meets the requirements. Specifically check whether the constraints are met, that is, check the construction location set Each construction location Is the environmental cancer risk of the assigned construction workers less than the preset threshold?

[0105] For example, for the construction personnel allocation plan represented by the current individual, the construction location It was assigned to three construction workers, namely , , ,Right now , , ;

[0106] Calculate construction location Construction workers , , Environmental cancer risk, , , :

[0107] After field investigation and testing, the construction location Working condition parameters As shown in Table 1:

[0108] Table 1 Construction location Working condition parameter table

[0109]

[0110] Construction personnel parameters , as shown in Table 2 below:

[0111]

[0112] Construction location Construction staff Gas temperature at respiratory tract height , calculated according to the hot air diffusion model, the formula is as follows:

[0113]

[0114] in, For construction workers Height, is a constant, , is the density of air (kg / m³), is the specific heat capacity of air (J / (kg·K)), is the rising speed of hot air (m / s), is the thermal conductivity (W / (m·K)).

[0115] Calculate construction location Construction staff Gas temperature at respiratory tract height , and determine the construction location Construction workers The on-site exposure time is shown in Table 3 and Table 4 below:

[0116] Table 3 Construction location Construction staff Gas temperature at respiratory tract height ,℃

[0117]

[0118] Table 4 Construction location Construction workers On-site exposure time ,h

[0119]

[0120] S1. Find the emission concentration table of carcinogenic VOC components of asphalt used in construction, and calculate the average daily inhalation of each carcinogenic component in VOC by construction workers. ;

[0121] The emission concentration table of carcinogenic VOC components of asphalt used in construction records: , this embodiment =3, the emission concentration of each carcinogenic component, the data of which is obtained a priori by testing the VOC components of different types of asphalt heated to the construction temperature;

[0122] Based on the design construction temperature of asphalt pavement, the emission concentration of each VOC component of asphalt at different temperatures was tested, and a VOC emission concentration table was compiled; the details are as follows:

[0123] The construction workers at various stages of the construction project of high-grade asphalt pavement were selected as the research objects, and the specific project construction information is shown in Table 5. According to the method for rapid quantification of carcinogenic risk of construction workers at asphalt pavement construction sites considering environmental factors and individual differences described in the present invention, the carcinogenic risk level of construction workers at various stages of asphalt pavement construction was analyzed.

[0124] Table 5 Project construction information

[0125]

[0126] According to the project design construction temperature, set 160°C, 140°C and 120°C as the design construction temperature The emission concentrations of VOC components of asphalt at three test temperatures are shown in Table 6 below:

[0127] Table 6 Emission concentration of carcinogenic VOC components of asphalt used in construction (μg / m 3 )

[0128]

[0129] Note: ND means that the component was not detected and the detection limit was used instead in subsequent calculations.

[0130] Construction location Construction workers For asphalt VOC Average daily inhalation dose of carcinogenic components Calculate as follows:

[0131]

[0132] in, For construction location Construction workers For asphalt VOC Average daily inhalation dose of carcinogenic components, unit: mg / (kg·d); For construction workers Respiratory intensity, unit: m 3 / h; For construction location Construction workers On-site exposure time, depending on the construction location Project volume Decision, unit: h; is the weight of the construction workers, unit: kg; For construction location Asphalt pavement material construction temperature The VOC of asphalt The concentration of the carcinogenic component is obtained by searching the emission concentration table of carcinogenic VOC components of construction asphalt. In this embodiment, the concentration of the carcinogenic VOC component of construction asphalt is obtained by searching the emission concentration table of carcinogenic VOC components of construction asphalt by linear interpolation method. The specific method is as follows:

[0133]

[0134] in, and It is the adjacent design construction temperature in the table of carcinogenic VOC component emission concentrations of construction asphalt, and , and They are and The VOC content of asphalt Concentration of carcinogenic components.

[0135] The calculation results of the concentration of carcinogenic components of asphalt VOC at the construction site are shown in Table 7:

[0136] Table 7 Concentration of carcinogenic components of asphalt VOC at construction sites (μg / m 3 )

[0137]

[0138] Calculate the average daily inhalation of each carcinogenic component in VOC by construction workers , the results are shown in Tables 8, 9, and 10:

[0139] Table 8 Construction personnel Average daily inhalation amount of each component in VOC (mg / (kg·d))

[0140]

[0141] Table 9 Construction personnel Average daily inhalation amount of each component in VOC (mg / (kg·d))

[0142]

[0143] Table 10 Construction personnel Average daily inhalation amount of each component in VOC (mg / (kg·d))

[0144]

[0145] S2, step S1, obtain the construction location Construction workers Average daily inhalation of each carcinogenic component in VOC Reference dose for inhalation absorption of corresponding carcinogenic components The ratio of ,Right now:

[0146]

[0147] Among them, carcinogenic components Reference dose for inhalation absorption , unit: mg kg -1 ·d -1 , calculated as follows:

[0148]

[0149] in, It is the reference concentration for breathing inhalation, unit: mg·m -3, defined as the concentration at which the risk of non-carcinogenic or non-mutagenic adverse effects of the carcinogenic component is expected to be undetectable in the population (including sensitive subpopulations) exposed to the carcinogenic component for life, used to characterize the safe upper limit concentration of the carcinogenic component, see Technical Specifications for Health Risk Assessment of Air Pollution (WS / T 666-2019); is the average weight of adults, unit: kg; is the average daily air breathing volume of an adult, unit: m 3 ·d -1 For the calculation method, please refer to the Technical Guidelines for Risk Assessment of Contaminated Sites (HJ 25.3—2014).

[0150] The reference dose parameters for inhalation absorption of carcinogenic components are shown in Table 11:

[0151] Table 11 Reference doses of carcinogenic components for inhalation and absorption

[0152]

[0153] Note: In the table The data comes from Appendix B (Page 19-21) of the Technical Guidelines for Risk Assessment of Contaminated Sites (HJ 25.3—2014).

[0154] Cancer risk estimates The calculation results are shown in Tables 12, 13 and 14:

[0155] Table 12 Construction personnel Cancer risk estimates

[0156]

[0157] Table 13 Construction personnel Cancer risk estimates

[0158]

[0159] Table 14 Construction personnel Cancer risk estimates

[0160]

[0161] S3. Construction location obtained according to step (1) Working parameters The temperature difference correction step S2 obtains the construction position of each carcinogenic component Construction workers Estimated cancer risk , evaluate the VOC content of asphalt Carcinogenic components on construction location Construction workers Environmental cancer risk , the calculation method is as follows:

[0162]

[0163] in, For construction location Asphalt pavement material construction temperature, For construction location The construction environment temperature, For construction location Construction staff Gas temperature at respiratory tract height.

[0164] Asphalt VOC Effects on Construction Location Construction workers Total environmental cancer risk The carcinogenic components contained in asphalt VOC affect the construction site Construction workers The sum of the environmental carcinogenic risks, namely: .

[0165] The calculation results are shown in Tables 15 to 17:

[0166] Table 15 Construction personnel The carcinogenic risk value and total environmental carcinogenic risk

[0167]

[0168] Table 16 Construction personnel The carcinogenic risk value and total environmental carcinogenic risk

[0169]

[0170] Table 17 Construction personnel The carcinogenic risk value and total environmental carcinogenic risk

[0171]

[0172] When the carcinogenic risk values ​​and the total environmental carcinogenic risk values ​​in Tables 15 to 17 are lower than the preset thresholds, it is judged that the constraints are met; otherwise, it is judged that the constraints are not met.

[0173] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for planning asphalt pavement construction based on quantified carcinogenic risk, characterized in that: The following steps are involved: (1) Plan the construction location set based on construction input , and determine each construction location in the set Working parameters ; Get the collection of construction personnel involved in the project , and determine each construction worker in the set Construction personnel parameters ; (2) Taking minimizing the working hours required for the longest construction location as the optimization goal and taking the environmental carcinogenic risk of each construction worker less than the preset threshold as the constraint condition, a genetic algorithm is used for optimization; where: The objective function is written as: in, For construction location the required working hours; Constraints written as: in, It is the first VOC in asphalt. Carcinogenic components on construction location Construction workers Environmental cancer risk, It is the first VOC in asphalt. The carcinogenic risk threshold of the carcinogenic component, Asphalt VOC to construction site Construction workers The total environmental cancer risk Total carcinogenic risk threshold of asphalt VOCs; Asphalt VOC Carcinogenic components on construction location Construction workers at Environmental cancer risk, , according to the construction location Working condition parameters and construction personnel parameters Sure; Asphalt VOC Effects on Construction Location Construction workers Total environmental cancer risk The carcinogenic components contained in asphalt VOC affect the construction site Construction workers The sum of the environmental carcinogenic risks, namely: .

2. The asphalt pavement construction planning method based on quantified carcinogenic risk according to claim 1, characterized in that: The specific steps of optimizing step (2) using genetic algorithm are as follows: (2-1) Initialize the population: randomly generate a corresponding number of individuals according to the preset population size. Each individual represents a construction personnel allocation plan, which is recorded as the matrix , Indicates construction workers Assigned to construction location ,otherwise , at least one construction worker is assigned to each construction location; (2-2) Individual selection: select individuals with higher fitness as parents according to the fitness value and exclude individuals that do not meet the constraints as parents; (2-3) Generation Iteration: Use crossover and / or mutation to generate the next generation of individuals and perform individual selection. Iterate until convergence or termination, and finally select the individual that meets the constraints and has the highest fitness. Use the construction personnel allocation scheme represented by the individual to allocate construction personnel.

3. The asphalt pavement construction planning method based on quantified carcinogenic risk as claimed in claim 2, characterized in that: The fitness value in step (2-2) Calculate as follows: in, For individual The longest construction location required working hours after the construction personnel allocation scheme represented by the construction personnel allocation scheme is allocated. The working hours required By construction location Amount of engineering and the construction crew assigned.

4. The asphalt pavement construction planning method based on quantified carcinogenic risk as claimed in claim 1, characterized in that the asphalt VOC Carcinogenic components on construction location Construction workers Environmental cancer risk The specific calculation method is as follows: S1. Find the emission concentration table of carcinogenic VOC components of asphalt used in construction, and calculate the average daily inhalation of each carcinogenic component in VOC by construction workers. ; The emission concentration table of carcinogenic VOC components of the construction asphalt records: at each design construction temperature The emission concentration of each carcinogenic component is is the maximum number of design construction temperatures, the data of which is obtained a priori by testing the VOC composition of different types of asphalt when heated to the construction temperature; S2, step S1, obtain the construction location Construction workers at Average daily inhalation of each carcinogenic component in VOC Reference dose for inhalation absorption of corresponding carcinogenic components The ratio of ; S3. Construction location obtained according to step (1) Working parameters The temperature difference correction step S2 obtains the construction position of each carcinogenic component Construction workers at Estimated cancer risk , evaluate the VOC content of asphalt Carcinogenic components on construction location Construction workers at Environmental cancer risk .

5. The asphalt pavement construction planning method based on quantified carcinogenic risk according to claim 4, characterized in that: Step S1 Construction location Construction workers For asphalt VOC Average daily inhalation dose of carcinogenic components Calculate as follows: in, For construction location Construction workers For asphalt VOC Average daily inhalation dose of carcinogenic components; For construction workers Respiratory intensity; For construction location Construction workers On-site exposure time, depending on the construction location Project volume Decide; is the weight of the construction workers; For construction location Asphalt pavement material construction temperature The VOC of asphalt The concentration of carcinogenic components is obtained by looking up the emission concentration table of carcinogenic VOC components of construction asphalt.

6. The asphalt pavement construction planning method based on quantified carcinogenic risk according to claim 5, characterized in that: Step S1 uses a linear interpolation method to find the emission concentration table of carcinogenic VOC components of construction asphalt. The specific method is as follows: in, and It is the adjacent design construction temperature in the table of carcinogenic VOC component emission concentrations of construction asphalt, and , and They are and The VOC content of asphalt Concentration of carcinogenic components.

7. The asphalt pavement construction planning method based on quantified carcinogenic risk according to claim 4, characterized in that: Carcinogenic components in step S2 Reference dose for inhalation absorption It is calculated as follows: in, The inhalation reference concentration is defined as the concentration at which the risk of non-carcinogenic or non-mutagenic adverse effects of the carcinogenic component is expected to be undetectable when the population, including sensitive subpopulations, is exposed to the carcinogenic component for a lifetime; is the average weight of an adult; The average daily amount of air an adult breathes.

8. The asphalt pavement construction planning method based on quantified carcinogenic risk according to claim 4, characterized in that: Step S3 evaluates the VOC content of asphalt Carcinogenic components on construction location Construction workers Environmental cancer risk , the calculation method is as follows: in, For construction location Asphalt pavement material construction temperature, For construction location The construction environment temperature, For construction location Construction staff Gas temperature at respiratory tract height.

9. The asphalt pavement construction planning method based on quantified carcinogenic risk according to claim 8, characterized in that: Construction location Construction staff Gas temperature at respiratory tract height , calculated according to the hot air diffusion model, the formula is as follows: in, For construction workers Height, is the attenuation coefficient, , is the density of air, is the specific heat capacity of air, is the rising speed of hot air, is the thermal conductivity coefficient.

10. An asphalt pavement construction planning system based on quantified carcinogenic risk, characterized in that: An electronic device or a non-transitory computer-readable storage medium; The electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the asphalt pavement construction planning method based on quantified carcinogenic risk as claimed in any one of claims 1 to 9 when executing the program; The non-transitory computer-readable storage medium stores a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of the asphalt pavement construction planning method based on quantified carcinogenic risk as described in any one of claims 1 to 9.

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