Evaluation method and device for pollutant discharge in asphalt pavement construction

Abstract

The invention provides an evaluation method and device for pollutant emission in asphalt pavement construction, and relates to the field of environment operation services. The method comprises the following steps: acquiring a target construction stage in an asphalt pavement construction life cycle; acquiring a pollutant emission list corresponding to the target construction stage, and acquiring target pollutant emission data corresponding to the target construction stage according to the pollutant emission list; in a preset model database, obtaining a target environment evaluation model corresponding to the target construction stage; inputting the target pollutant emission data into a target environment evaluation model, and outputting a target list result corresponding to the target construction stage according to the target environment evaluation model; and determining a dye emission evaluation result corresponding to the target construction stage according to the target list result. According to the invention, the problem of low evaluation efficiency of pollutant discharge in a manual evaluation mode is solved.

Description

Technical Field

[0001] The present application relates to the field of environmental operation services, and particularly to an evaluation method and device for pollutant emissions in asphalt pavement construction. Background Art

[0002] Asphalt pavement has become the main pavement type in high-grade highways, especially accounting for more than 90% in expressways. However, during the construction process of asphalt pavement, not only a large amount of energy is consumed, but also many environmental problems are generated. Among them, asphalt-based materials will release a large amount of asphalt fumes during the high-temperature process. The components of these fumes are complex and contain a large number of harmful substances, seriously threatening the health of construction workers and the ecological environment. In this context, it is particularly important to quantitatively evaluate the environmental load during the construction process of asphalt pavement.

[0003] Currently, the environmental load in each stage of asphalt pavement construction is quantitatively evaluated mainly through manual evaluation. In the above method, first, data collectors obtain pollutant emission data in each stage of asphalt pavement construction. Then, professional analysts conduct environmental impact assessments on each stage of asphalt pavement construction based on the pollutant emission data. However, only through this method, a large amount of time will be spent on data collection and data analysis, resulting in the problem of low evaluation efficiency of pollutant emissions.

[0004] Therefore, there is an urgent need for an evaluation method and device for pollutant emissions in asphalt pavement construction. Summary of the Invention

[0005] The present application provides an evaluation method and device for pollutant emissions in asphalt pavement construction, which solves the problem of low evaluation efficiency of pollutant emissions in the way of manual evaluation.

[0006] In the first aspect of the present application, an evaluation method for pollutant emissions in asphalt pavement construction is provided. The method includes: obtaining a target construction stage in the construction life cycle of asphalt pavement, where the target construction stage is any construction stage in the construction life cycle; obtaining a pollutant emission list corresponding to the target construction stage, and obtaining target pollutant emission data corresponding to the target construction stage according to the pollutant emission list; in a preset model database, obtaining a target environmental evaluation model corresponding to the target construction stage, where the preset model database is used to store the correspondence between the target construction stage and the target environmental evaluation model; inputting the target pollutant emission data into the target environmental evaluation model, and obtaining a target list result corresponding to the target construction stage according to the target environmental evaluation model; and determining a pollutant emission evaluation result corresponding to the target construction stage according to the target list result.

[0007] Optionally, before obtaining the target construction stage in the asphalt pavement construction life cycle, the method further includes constructing the asphalt pavement construction life cycle: classifying according to the technological characteristics of various activities in the asphalt pavement construction process, and constructing the asphalt pavement construction life cycle based on the classification results. The asphalt pavement construction life cycle includes a raw material production stage, an asphalt mixture mixing stage, an asphalt mixture transportation stage, and an asphalt surface layer construction stage.

[0008] Optionally, obtaining the target pollutant emission data corresponding to the target construction stage according to the pollutant emission inventory, specifically including: when the target construction stage is the raw material production stage, obtaining the raw material quality data corresponding to the raw material production stage according to the pollutant emission inventory; when the target construction stage is the asphalt mixture mixing stage, obtaining the energy consumption data, asphalt mixture output data, and total asphalt mixture data corresponding to the asphalt mixture mixing stage according to the pollutant emission inventory; when the target construction stage is the asphalt mixture transportation stage, obtaining the consumed fuel type data and total transportation fuel consumption data corresponding to the asphalt mixture transportation stage according to the pollutant emission inventory; when the target construction stage is the asphalt surface layer construction stage, obtaining the indirect emission data and direct emission data of the asphalt surface layer construction stage corresponding to the asphalt surface layer construction stage according to the pollutant emission inventory.

[0009] Optionally, when the target construction stage is the asphalt surface layer construction stage, inputting the target pollutant emission data into the target environmental assessment model, and outputting the target list result corresponding to the target construction stage according to the target environmental assessment model, specifically including: obtaining the construction site pollutant emission assessment model corresponding to the asphalt surface layer construction stage; inputting the indirect emission data of the asphalt surface layer construction stage into the construction site pollutant emission assessment model, and outputting the indirect emission list result through the construction site pollutant emission assessment model according to the following formula:

[0010]

[0011] where Q c(间)i is the emission amount of the i-th pollutant indirectly generated by the energy consumption in the asphalt surface layer construction stage, W is the total number of construction machinery used in the construction stage, E 1w is the fuel gauge reading of the w-th construction machinery before construction, E 2w is the fuel gauge reading of the w-th construction machinery after construction, C w is the fuel tank capacity of the w-th construction machinery, EF wi is the emission factor corresponding to the i-th pollutant generated by the w-th construction machinery; inputting the direct emission data of the asphalt surface layer construction stage into the construction site pollutant emission assessment model, and outputting the direct emission list result through the construction site pollutant emission assessment model according to the following formula:

[0012]

[0013] Among them, is the emission amount of the i-th pollutant directly generated during the energy consumption in the asphalt surface layer construction stage, z is the specific process in the asphalt surface layer construction stage, where z = 1 represents the paving process in the asphalt surface layer construction stage, and z = 2 represents the rolling process in the asphalt surface layer construction stage, l z1 represents the sampling space length during the paving process or the rolling process, l z2 represents the sampling space width during the paving process or the rolling process, h z represents the sampling space height during the paving process or the rolling process, represents the concentration of the i-th pollutant during the paving process or the rolling process, t z represents the construction time during the paving process or the rolling process; the indirect emission inventory result and the direct emission inventory result are used as the corresponding target inventory result in the asphalt surface layer construction stage.

[0014] Optionally, the pollutant emission evaluation result corresponding to the target construction stage is confirmed according to the target inventory result: multiple environmental impact types corresponding to the target construction stage are obtained according to the target inventory result; environmental impact assessment is carried out according to the multiple environmental impact types, and the pollutant emission evaluation result corresponding to the target construction stage is obtained.

[0015] Optionally, multiple environmental impact types corresponding to the target construction stage are obtained according to the target inventory result, specifically including: judging the environmental impact type corresponding to the target construction stage according to the pollutant type in the target inventory result, and the environmental impact type includes greenhouse effect type, acidification effect type, photochemical smog type, human health damage type, and water eutrophication type.

[0016] Optionally, environmental impact assessment is carried out according to the environmental impact type, and the pollutant emission evaluation result corresponding to the target construction stage is obtained, specifically including: calculating multiple characterization results of the multiple environmental impact types respectively causing environmental pollution impacts on the target construction stage, and one environmental impact type corresponds to one characterization result; normalizing the multiple characterization results, and using the result of the normalization process as the pollutant emission evaluation result.

[0017] In the second aspect of the present application, an evaluation device for pollutant emissions in asphalt pavement construction is provided. The device includes an acquisition module and a processing module, where,

[0018] An acquisition module is used to acquire a target construction stage in the construction life cycle of an asphalt pavement. The target construction stage is any construction stage in the construction life cycle; acquire a pollutant emission inventory corresponding to the target construction stage, and obtain target pollutant emission data corresponding to the target construction stage according to the pollutant emission inventory; in a preset model database, acquire a target environmental assessment model corresponding to the target construction stage, and the preset model database is used to store the correspondence between the target construction stage and the target environmental assessment model.

[0019] A processing module is used to input the target pollutant emission data into the target environmental assessment model, and output a target inventory result corresponding to the target construction stage according to the target environmental assessment model; confirm a pollutant emission assessment result corresponding to the target construction stage according to the target inventory result.

[0020] In a third aspect of the present application, an electronic device is provided, including a processor, a memory, a user interface, and a network interface. The memory is used to store instructions, the user interface and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory so that the electronic device executes the method as described in any one of the above.

[0021] In a fourth aspect of the present application, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to perform the method as described in any one of the above.

[0022] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0023] 1. Acquire the target construction stage in the construction life cycle of the asphalt pavement; acquire the pollutant emission inventory corresponding to the target construction stage, and obtain the target pollutant emission data corresponding to the target construction stage according to the pollutant emission inventory; in the preset model database, acquire the target environmental assessment model corresponding to the target construction stage; input the target pollutant emission data into the target environmental assessment model, and output the target inventory result corresponding to the target construction stage according to the target environmental assessment model; confirm the pollutant emission assessment result corresponding to the target construction stage according to the target inventory result, so as to improve the accuracy and calculation efficiency of pollutant emission assessment through automated data analysis, model-based calculation, and standardized environmental assessment methods, solve the problems of low efficiency of pollutant emission assessment, long data processing time, and large human errors in the manual assessment method, ensure the scientificity and accuracy of environmental impact assessment, and enable rapid assessment and optimization of pollution control measures in large asphalt pavement construction projects.

[0024] 2. The indirect emission inventory results and direct emission inventory results in the asphalt surface layer construction stage are respectively output through the construction site pollutant emission evaluation model, thereby improving the comprehensiveness of the evaluation of pollutant emissions in the entire asphalt pavement construction life cycle process.

[0025] 3. Calculate multiple characterization results of multiple environmental impact types on the target construction stage causing environmental pollution impacts, perform normalization processing on the multiple characterization results, and use the results of the normalization processing as the pollutant emission evaluation results, thereby realizing the comparability between different environmental impact types and improving the comprehensiveness and scientificity of the pollutant emission evaluation. Brief Description of the Drawings

[0026] Figure 1 It is a schematic flowchart of an evaluation method for pollutant emissions in asphalt pavement construction provided by an embodiment of the present application;

[0027] Figure 2 It is a schematic diagram of modules of an evaluation device for pollutant emissions in asphalt pavement construction provided by an embodiment of the present application;

[0028] Figure 3 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

[0029] Description of the reference numerals: 21, acquisition module; 22, processing module; 301, processor; 302, communication bus; 303, user interface; 304, network interface; 305, memory. Detailed Embodiments

[0030] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0031] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the specification of the present application, the singular forms "a", "an", "the", "above", "the foregoing", "this" are also intended to include the plural forms, unless there is a clear indication to the contrary in the context. It should also be understood that the term " / and / " used in the present application refers to and includes any or all possible combinations of one or more of the listed items.

[0032] Hereinafter, the terms "first" and "second" are for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Please refer to Figure 1 , which shows a schematic flowchart of an evaluation method for pollutant emissions in asphalt pavement construction provided by an embodiment of the present application. The flowchart mainly includes the following steps: S101 to S105.

[0035] Step S101, obtain the target construction stage in the life cycle of asphalt pavement construction.

[0036] Specifically, understand the asphalt pavement structure, analyze the unit processes that cause environmental impacts during the construction period of the asphalt pavement, and clarify the life cycle of asphalt pavement construction: classify according to the process characteristics of various activities during the asphalt pavement construction process, and construct the life cycle of asphalt pavement construction based on the classification results. The life cycle of asphalt pavement construction includes the raw material production stage, the asphalt mixture mixing stage, the asphalt mixture transportation stage, and the asphalt surface layer construction stage. That is, the system boundary of the life cycle of the asphalt pavement construction process starts from raw material production and ends until the asphalt surface layer is constructed. The target construction stage is any construction stage in the construction life cycle.

[0037] Step S102, obtain the pollutant emission list corresponding to the target construction stage, and obtain the target pollutant emission data corresponding to the target construction stage according to the pollutant emission list.

[0038] Specifically, by decomposing the process of the target construction stage, pollutant emission sources are determined, and a complete emission inventory is constructed in combination with existing environmental databases, measured data, and literature data. For example, according to the production activities or construction links involved in the target construction stage, the types of pollutants that may be generated in this stage are identified. When the target construction stage is the raw material production stage, the corresponding raw material quality data for the raw material production stage is obtained according to the pollutant emission inventory; when the target construction stage is the asphalt mixture mixing stage, the corresponding energy consumption data, asphalt mixture production data, and total asphalt mixture data for the asphalt mixture mixing stage are obtained according to the pollutant emission inventory; when the target construction stage is the asphalt mixture transportation stage, the corresponding fuel consumption type data and total transportation fuel consumption data for the asphalt mixture transportation stage are obtained according to the pollutant emission inventory; when the target construction stage is the asphalt surface layer construction stage, the corresponding indirect emission data and direct emission data for the asphalt surface layer construction stage are obtained according to the pollutant emission inventory. Secondly, the pollutant emission coefficients per unit output or per unit energy consumption can also be calculated based on historical data or on-site monitoring data, and these emission coefficients are used in combination with the production scale, energy consumption data, or transportation mileage of the target construction stage to calculate the pollutant emissions in this stage. For pollutant emissions that are difficult to measure directly, estimation can be carried out with the help of environmental life cycle databases or relevant environmental impact assessment research results, and at the same time, in combination with the specific situation of the engineering project, the emission inventory is corrected and adjusted to ensure its applicability.

[0039] Step S103: In the preset model database, obtain the target environmental assessment model corresponding to the target construction stage.

[0040] Specifically, a preset model database is constructed. The preset model database is used to store each construction stage, multiple environmental assessment models, and the corresponding relationships between the construction stages and the environmental assessment models. One construction stage corresponds to one environmental assessment model, which also includes the corresponding relationship between the target construction stage and the target environmental assessment model. For example, for the raw material production stage, the environmental assessment models applicable to this stage are stored in the database, such as the life cycle assessment (LCA) model constructed based on the pollutant emission characteristics generated during the processes of raw material extraction, processing, etc. For the asphalt mixture mixing stage, the database stores the assessment models based on energy consumption and pollutant emission characteristics, such as the model considering fuel combustion emissions and fugitive emissions during the mixing process. For the asphalt mixture transportation stage, the database stores the environmental assessment models based on fuel consumption, transportation mode, and transportation distance, such as the carbon footprint model or the energy consumption and emission assessment model. For the asphalt surface layer construction stage, the database stores the assessment models based on the emission characteristics of mechanical operations and hot mix construction, such as the environmental impact model considering the exhaust emissions of construction machinery and the volatilization emissions of material heating.

[0041] In addition, the preset model database supports the extension and update of the environmental assessment model. For example, when new construction stages are added during the life cycle of asphalt pavement construction, such as the recycled asphalt recycling stage or the waste asphalt treatment stage, an environmental assessment model applicable to this stage can be constructed according to its pollutant emission characteristics, and the corresponding relationship with the construction stage can be updated to the database to ensure the integrity and applicability of the environmental assessment model. When obtaining the environmental assessment model corresponding to the target construction stage, the corresponding relationship in the database can be matched by querying the identification information of the target construction stage, and the corresponding target environmental assessment model can be returned to support subsequent pollutant emission characteristic analysis and environmental impact assessment calculation.

[0042] Step S104, input the target pollutant emission data into the target environmental assessment model, and output the target list result corresponding to the target construction stage according to the target environmental assessment model.

[0043] Specifically, for different target construction stages, the corresponding target pollutant emission data in the target construction stage can be input, and the target list result corresponding to the target construction stage can be output through a specific environmental assessment model.

[0044] Among them, for the raw material production stage, the life cycle assessment (LCA) model constructed based on the pollutant emission characteristics generated during the processes of raw material extraction, processing, etc. outputs the target list result corresponding to the raw material production stage: on-site obtain the quality data of the raw materials required for asphalt pavement paving, including but not limited to the quality of each asphalt mixture, determine the quality of raw materials such as asphalt, modified asphalt, aggregates, mineral powder, etc. required according to the gradation, and integrate and quantify the pollutant emission factors of various raw materials to obtain the list result of the asphalt pavement raw material production stage. The calculation formula is as follows:

[0045]

[0046] Among them, in the integral term, Q ri is the emission amount of pollutant i in the raw material production stage, J is the total number of types of raw materials, m is the total mass of asphalt mixtures required for asphalt pavement paving, r j is the gradation of the j-th type of raw material, that is, the mass proportion of a certain raw material in the asphalt mixture, used to calculate the actual usage of various raw materials, λ j is the non-linear gain factor of the j-th type of raw material, used to describe the non-linear growth effect of pollutant emissions with the change of production scale, which may be affected by factors such as production efficiency and emission accumulation effect, RF ji is the emission factor of pollutant i emitted by the production of the j-th type of raw material, CF ji is the pollution control correction coefficient of pollutant i emitted by the production of the j-th type of raw material, x is the integral variable, representing the cumulative emission with the change of raw material usage, α jiis the amplification index of the j-th type of raw material for pollutant i, which determines the non-linear degree of pollutant emissions with the growth of production scale. For example, some pollutants may show a super-linear growth trend as production volume increases. Convert the calculation of pollutant emissions into an integral form to dynamically describe the cumulative effect of pollutant emissions with mass changes. The term in the integrand is used to simulate the non-linear changes of some pollutants under different production scales. For example, as the consumption of raw materials increases, the emission rate of some pollutants may not increase linearly but follow a power-law relationship or gain effect.

[0047] Among them, in the summation term, K is the number of energy types involved in raw material production, such as the total number of different energy types like electricity, coal, natural gas, etc., is the energy consumption dependence index of the k-th type of energy in the production process of the j-th type of raw material, which is used to describe the non-linear impact of energy consumption on pollutant emissions. For example, when the production scale is small, the unit pollutant emissions may be high, and as the production scale increases, the growth of pollutant emissions may slow down. E jk is the total amount of the k-th type of energy consumed in the production process of the j-th type of raw material, is the exponential decay term, which describes the inhibitory effect of scale effect on pollutant emissions. For example, when the production scale is large, optimizing the process may reduce the pollutant emissions per unit output, making the emission growth slow down or decrease. Then δ jk m is the decay coefficient of the k-th type of energy utilization in the production process of the j-th type of raw material. The combination of power function and exponential decay is used to describe the pollutant emissions related to energy consumption, where reflects the non-linear dependence relationship between emissions and production scale, while is used to describe the inhibitory effect of scale effect on pollutant emissions. For example, when the production scale is large, due to technical optimization or improved equipment utilization rate, the emissions per unit pollutant may decrease.

[0048] For the asphalt mixture mixing stage, an evaluation model based on energy consumption and pollutant emission characteristics, such as a model considering fuel combustion emissions and fugitive emissions during the mixing process, outputs the corresponding target inventory results for the asphalt mixture mixing stage: Understand basic information such as the type of mixing station, and obtain the energy consumption per unit time, the output of asphalt mixture per unit time, and the total amount of asphalt mixture required for asphalt pavement paving during the asphalt mixture mixing stage through on-site investigation. Combine the pollutant emission factors of various types of energy to integrate and quantify to obtain the inventory results for the asphalt mixture mixing stage. The calculation formula is as follows:

[0049]

[0050] Among them, Q mi$E_{i}^{mix}$ is the emission of pollutant $i$ in the mixing stage of asphalt mixture, $S$ is the total operating time of the mixing stage, $P$ is the total number of energy types consumed by the mixing plant, $m(s)$ is the cumulative production mass of asphalt mixture at the $s$-th moment, $m$ u (s) is the production rate of asphalt mixture per unit time at the mixing plant, $UE$ p (s) is the consumption of the $p$-th energy type per unit time at the mixing plant at the $s$-th moment, $EF$ pi $EF_{i}^{p}$ is the emission factor of pollutant $i$ for the $p$-th energy type, $\theta$ p $\xi_{i}^{p}$ is the non - linear amplification factor of pollutant $i$ for the $p$-th energy type, used to consider the impact of different process conditions or load changes on pollutant emissions, $\xi$ pi $n_{i}^{p}$ is the non - linear emission index of pollutant $i$ for the $p$-th energy type. Through the above calculation formula, the evaluation model corresponding to the mixing stage of asphalt mixture can more accurately describe the dynamic changes of pollutant emissions of the mixing plant at different time stages, and consider complex influences such as energy consumption patterns, production loads, and time factors. It can be applied to different types of asphalt mixture mixing plants and can be flexibly adjusted according to different energy types and production processes.

[0051] For the transportation stage of asphalt mixture, based on the fuel consumption, transportation mode, and transportation distance, the environmental evaluation model outputs the corresponding target inventory results for the transportation stage of asphalt mixture: understand the types of vehicles used in the transportation process and their basic information, record on - site the full - load fuel consumption and empty - load fuel consumption of each type of vehicle during the round - trip from the mixing plant to the construction site, as well as the round - trip times of each type of vehicle, obtain the total fuel consumption in the transportation stage, and integrate and quantify the inventory results for the transportation stage of asphalt mixture by combining the emission factors of pollutants for the consumed fuel type. The calculation formula is as follows:

[0052]

[0053] Among them, $Q$ ti $E_{i}^{trans}$ is the emission of pollutant $i$ in the transportation stage of asphalt mixture, $L$ is the total number of types of transport vehicles, $E$ l $E_{l}^{full}$ is the full - load fuel consumption of the $l$-th type of transport vehicle from the mixing plant to the construction site, $E'$ l $E_{l}^{empty}$ is the empty - load fuel consumption of the $l$-th type of transport vehicle from the construction site back to the mixing plant, $n$ l $n_{l}$ is the number of transports of the $l$-th type of transport vehicle, $EF$ li $EF_{i}^{l}$ is the emission factor of $i$ for the fuel type consumed by the $l$-th type of transport vehicle.

[0054] For the asphalt surface course construction stage, the database stores an evaluation model based on the emission characteristics of mechanical operations and hot mix construction, such as an environmental impact model considering the exhaust emissions of construction machinery and the volatile emissions from material heating, that is, the on-site pollutant emission evaluation model for the construction site, and outputs the corresponding target list results for the asphalt surface course construction stage: For the asphalt surface course construction stage, first understand the basic information of various types of equipment on the construction site, such as the model, fuel type, fuel tank capacity, etc. Record the fuel gauge readings on the instrument panel of each equipment before and after construction on-site to obtain the total fuel consumption during the construction stage. Combine the pollutant emission factors of the consumed fuel type to integrate and quantify the list results of the indirect emissions generated by energy consumption during the asphalt surface course construction stage. Among them, for indirect emissions:

[0055] Input the indirect emission data of the asphalt surface course construction stage into the on-site pollutant emission evaluation model, and through the on-site pollutant emission evaluation model, output the indirect emission list results according to the following formula;

[0056]

[0057] Among them, Q c(间)i is the emission amount of the i-th pollutant indirectly generated by energy consumption during the asphalt surface course construction stage, W is the total number of construction machinery used during the construction stage, E 1w is the fuel gauge reading on the instrument panel of the w-th construction machinery before construction, E 2w is the fuel gauge reading on the instrument panel of the w-th construction machinery after construction, C w is the fuel tank capacity of the w-th construction machinery, EF wi is the emission factor corresponding to the i-th pollutant generated by the w-th construction machinery. For direct emissions, input the direct emission data of the asphalt surface course construction stage into the on-site pollutant emission evaluation model, and through the on-site pollutant emission evaluation model, output the direct emission list results according to the following formula:

[0058]

[0059] Among them, is the emission amount of the i-th pollutant directly generated by energy consumption during the asphalt surface course construction stage, z is the specific process of the asphalt surface course construction stage, where z = 1 represents the paving process in the asphalt surface course construction stage, z = 2 represents the rolling process in the asphalt surface course construction stage, l z1 represents the sampling space length during the paving process or the rolling process, l z2 represents the sampling space width during the paving process or the rolling process, h z represents the sampling space height during the paving process or the rolling process, represents the concentration of the i-th pollutant during the paving process or the rolling process, t zIndicates the construction time of the paving process or the rolling process.

[0060] In the embodiments of the present application, the closest to the actual emissions can be obtained in the following manner Select an instrument capable of detecting the gases that may be emitted during the asphalt construction process. The portable gas detector includes a sensor with real-time data recording and data uploading functions. The sensor can detect the concentrations of pollutants such as CO, NO X , VOCs, etc.; use the selected portable gas detector to conduct detections at the construction site. Use the portable gas detector to directly collect gas detections at a position 0.5m - 1.0m behind the paver or roller and 0.1m - 0.3m above the asphalt mixture. The detection duration is 5 minutes, and the number of detections is at least 2 times. Conducting detections at the above height results in more stable direct emission concentrations of pollutants during the paving and rolling processes. At this time, the space height h is 0.2m - 0.6m, preferably 0.4m, and the calculated The closest to the actual emissions.

[0061] Step S105, confirm the pollutant emission evaluation result corresponding to the target construction stage according to the target list result.

[0062] Specifically, obtain multiple environmental impact types corresponding to the target construction stage according to the target list result: judge the environmental impact types corresponding to the target construction stage according to the pollutant types in the target list result. The environmental impact types include greenhouse effect type, acidification effect type, photochemical smog type, human health damage type, and water eutrophication type. Then conduct environmental impact assessments according to the multiple environmental impact types and obtain the pollutant emission evaluation result corresponding to the target construction stage: calculate multiple characterization results of the multiple environmental impact types respectively causing environmental pollution impacts on the target construction stage. One environmental impact type corresponds to one characterization result; perform normalization processing on the multiple characterization results and use the result of the normalization processing as the pollutant emission evaluation result.

[0063] For the greenhouse effect type, the calculation method of its characterization result is specifically as follows:.

[0064]

[0065] Among them, E GWP(X) is the characterization result of the greenhouse effect in each stage of asphalt pavement construction. I1 is the total number of different types of greenhouse gases. X is each stage of asphalt pavement construction. X can represent any character in r, m, t, c. is the emission amount of greenhouse gas i1 in each stage of asphalt pavement construction. For example, when X represents c, then represents the emission amount of greenhouse gas i1 in the asphalt surface layer construction stage.

[0066] For the acidification effect type, the calculation method of its characterization result is as follows:

[0067]

[0068] Among them, E AP(X) is the characterization result of the acidification effect at each stage of asphalt pavement construction, I2 is the total quantity of pollutants causing the acidification effect of different types, is the emission amount of pollutant i2 causing the acidification effect in each stage of asphalt pavement construction. For example, when X represents c, then represents the emission amount of pollutant i2 causing the acidification effect in the asphalt surface course construction stage.

[0069] For the photochemical smog type, the calculation method of its characterization result is as follows:

[0070]

[0071] Among them, E POCP(X) is the characterization result of the photochemical smog at each stage of asphalt pavement construction, I3 is the total quantity of pollutants of different types of photochemical smog, is the emission amount of pollutant i3 of the photochemical smog in each stage of asphalt pavement construction. For example, when X represents c, then represents the emission amount of pollutant i3 of the photochemical smog in the asphalt surface course construction stage.

[0072] For the human health damage type, the calculation method of its characterization result is as follows:

[0073]

[0074] Among them, E HTP(X) is the characterization result of the human health damage at each stage of asphalt pavement construction, I4 is the total quantity of pollutants causing human health damage of different types, is the emission amount of pollutant i4 causing human health damage in each stage of asphalt pavement construction. For example, when X represents c, then represents the emission amount of pollutant i4 causing human health damage in the asphalt surface course construction stage.

[0075] For the water eutrophication type, the calculation method of its characterization result is as follows:

[0076]

[0077] Among them, E EP(X)For the characterization results of water eutrophication in each stage of asphalt pavement construction, I5 is the total quantity of pollutants causing water eutrophication of different types. In each stage of asphalt pavement construction, it is the emission of pollutant i5 that causes water eutrophication. For example, when X represents c, then represents the emission of pollutant i5 that causes water eutrophication in the construction stage of the asphalt surface course.

[0078] After the environmental impact characterization evaluation of each stage of asphalt pavement construction, in order to further compare the relative magnitudes among the five environmental impacts, the characterization results are normalized to convert their environmental impact results into the same dimension. The normalization is carried out through the following formula:

[0079]

[0080] Among them, Y can represent any character in GWP, AP, POCP, HTP, EP, that is, representing greenhouse effect, acidification effect, photochemical smog, human health damage, and water eutrophication respectively. E Y(X) is the characterization result of each type of environmental impact factor in each stage of asphalt pavement construction, and F Y represents the normalization reference value corresponding to each type of environmental impact factor respectively. Finally, the result of the normalization process is used as the pollutant emission evaluation result.

[0081] By adopting the above method, this application obtains the target construction stage in the life cycle of asphalt pavement construction; obtains the pollutant emission inventory corresponding to the target construction stage, and obtains the target pollutant emission data corresponding to the target construction stage according to the pollutant emission inventory; in the preset model database, obtains the target environmental evaluation model corresponding to the target construction stage; inputs the target pollutant emission data into the target environmental evaluation model, and outputs the target list result corresponding to the target construction stage according to the target environmental evaluation model; confirms the pollutant emission evaluation result corresponding to the target construction stage according to the target list result, so as to improve the accuracy and calculation efficiency of pollutant emission evaluation through automated data analysis, model-based calculation, and standardized environmental evaluation methods, solves the problems of low efficiency of pollutant emission evaluation, long data processing time, and large human error existing in the way of manual evaluation, ensures the scientificity and accuracy of environmental impact assessment, and can achieve rapid evaluation and optimization of pollution control measures in large asphalt pavement construction projects.

[0082] Please refer to Figure 2 which shows a schematic diagram of the modules of an evaluation device for pollutant emissions in asphalt pavement construction provided by an embodiment of this application. The device includes an acquisition module 21 and a processing module 22, where,

[0083] An acquisition module 21 is used to acquire a target construction stage in the construction life cycle of an asphalt pavement, where the target construction stage is any construction stage in the construction life cycle; acquire a pollutant emission inventory corresponding to the target construction stage, and acquire target pollutant emission data corresponding to the target construction stage according to the pollutant emission inventory; in a preset model database, acquire a target environmental assessment model corresponding to the target construction stage, and the preset model database is used to store the correspondence between the target construction stage and the target environmental assessment model.

[0084] A processing module 22 is used to input the target pollutant emission data into the target environmental assessment model, and output a target list result corresponding to the target construction stage according to the target environmental assessment model; confirm a pollutant emission assessment result corresponding to the target construction stage according to the target list result.

[0085] In a possible implementation manner, before acquiring the target construction stage in the construction life cycle of the asphalt pavement, the acquisition module 21 is used to construct the construction life cycle of the asphalt pavement: classify according to the technological characteristics of various activities in the asphalt pavement construction process, so as to construct the construction life cycle of the asphalt pavement according to the classification result. The construction life cycle of the asphalt pavement includes a raw material production stage, an asphalt mixture mixing stage, an asphalt mixture transportation stage, and an asphalt surface layer construction stage.

[0086] In a possible implementation manner, the acquisition module 21 is used to acquire the target pollutant emission data corresponding to the target construction stage according to the pollutant emission inventory, specifically including: when the target construction stage is the raw material production stage, acquire the raw material quality data corresponding to the raw material production stage according to the pollutant emission inventory; when the target construction stage is the asphalt mixture mixing stage, acquire the energy consumption data, asphalt mixture output data, and total asphalt mixture data corresponding to the asphalt mixture mixing stage according to the pollutant emission inventory; when the target construction stage is the asphalt mixture transportation stage, acquire the consumed fuel type data and total transportation fuel consumption data corresponding to the asphalt mixture transportation stage according to the pollutant emission inventory; when the target construction stage is the asphalt surface layer construction stage, acquire the indirect emission data of the asphalt surface layer construction stage and the direct emission data of the asphalt surface layer construction stage corresponding to the asphalt surface layer construction stage according to the pollutant emission inventory.

[0087] In a possible implementation manner, when the target construction stage is the asphalt surface layer construction stage, the processing module 22 is used to input the target pollutant emission data into the target environmental assessment model, and output a target list result corresponding to the target construction stage according to the target environmental assessment model, specifically including: acquire a construction site pollutant emission assessment model corresponding to the asphalt surface layer construction stage; input the indirect emission data of the asphalt surface layer construction stage into the construction site pollutant emission assessment model, and through the construction site pollutant emission assessment model, output an indirect emission list result according to the following formula;

[0088]

[0089] Among them, Q c(间)i is the emission amount of the i-th pollutant indirectly generated by the energy consumption during the construction stage of the asphalt surface course, W is the total number of mechanical equipment used during the construction stage, E 1w is the fuel gauge reading of the w-th mechanical equipment before construction, E 2w is the fuel gauge reading of the w-th mechanical equipment after construction, C w is the fuel tank capacity of the w-th mechanical equipment, EF wi is the emission factor corresponding to the i-th pollutant generated by the w-th mechanical equipment; Input the direct emission data during the construction stage of the asphalt surface course into the on-site pollutant emission evaluation model, and through the on-site pollutant emission evaluation model, output the direct emission inventory result according to the following formula:

[0090]

[0091] Among them, Q c(直)i is the emission amount of the i-th pollutant directly generated by the energy consumption during the construction stage of the asphalt surface course, z is the specific process during the construction stage of the asphalt surface course, where z = 1 represents the paving process during the construction stage of the asphalt surface course, z = 2 represents the rolling process during the construction stage of the asphalt surface course, l z1 represents the sampling space length during the paving process or the rolling process, l z2 represents the sampling space width during the paving process or the rolling process, h z represents the sampling space height during the paving process or the rolling process, represents the concentration of the i-th pollutant during the paving process or the rolling process, t z represents the construction time during the paving process or the rolling process; Take the indirect emission inventory result and the direct emission inventory result as the target inventory result corresponding to the construction stage of the asphalt surface course.

[0092] In a possible implementation manner, the processing module 22 is used to confirm the pollutant emission evaluation result corresponding to the target construction stage according to the target inventory result: Obtain multiple environmental impact types corresponding to the target construction stage according to the target inventory result; Conduct environmental impact assessment based on the multiple environmental impact types, and obtain the pollutant emission evaluation result corresponding to the target construction stage.

[0093] In a possible implementation, the processing module 22 is configured to obtain multiple environmental impact types corresponding to the target construction phase according to the target list result, specifically including: judging the environmental impact types corresponding to the target construction phase according to the pollutant types in the target list result, and the environmental impact types include greenhouse effect type, acidification effect type, photochemical smog type, human health damage type, and water eutrophication type.

[0094] In a possible implementation, the processing module 22 is configured to perform an environmental impact assessment according to the environmental impact types and obtain a pollutant emission assessment result corresponding to the target construction phase, specifically including: calculating multiple characterization results of the multiple environmental impact types respectively causing environmental pollution impacts on the target construction phase, and one environmental impact type corresponds to one characterization result; performing normalization processing on the multiple characterization results, and using the result of the normalization processing as the pollutant emission assessment result.

[0095] It should be noted that: when the device provided in the above embodiment realizes its functions, only the above-mentioned division of each functional module is used for illustration. In actual applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiment belong to the same concept, and the specific implementation process can be seen in the method embodiment, which will not be elaborated here.

[0096] This application also provides an electronic device. Refer to Figure 3 , Figure 3 is a schematic structural diagram of an electronic device provided in an embodiment of this application. The electronic device may include: at least one processor 301, at least one communication bus 302, a user interface 303, at least one network interface 304, and a memory 305.

[0097] Among them, the processor 301 may include one or more processing cores. The processor 301 uses various interfaces and circuits to connect various parts within the entire server. By running or executing instructions, programs, code sets, or instruction sets stored in the memory 305, and by invoking the data stored in the memory 305, it executes various functions of the server and processes data. Optionally, the processor 301 may be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), or programmable logic array (PLA). The processor 301 may integrate a combination of one or several of a central processing unit (CPU), a graphics processing unit (GPU), and a modem, etc. Among them, the CPU mainly processes the operating system, user interface, application programs, etc.; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communication. It can be understood that the above-mentioned modem may not be integrated into the processor 301 and may be implemented separately through a single chip.

[0098] Among them, the communication bus 302 is used to realize the connection and communication between these components.

[0099] Among them, the user interface 303 may include a display screen and a camera. Optionally, the user interface 303 may further include a standard wired interface and a wireless interface.

[0100] Among them, the network interface 304 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface).

[0101] Among them, the memory 305 may include a Random Access Memory (RAM), or may also include a Read-Only Memory. Optionally, the memory 305 includes a non-transitory computer-readable storage medium. The memory 305 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 305 may include a program storage area and a data storage area. Among them, the program storage area may store instructions for implementing the operating system, instructions for at least one function (such as touch function, sound playback function, image playback function, etc.), instructions for implementing the above-mentioned method embodiments, etc.; the data storage area may store the data involved in the above-mentioned method embodiments. Optionally, the memory 305 may also be at least one storage device located far from the aforementioned processor 301. Refer to Figure 3 , in the memory 305 as a computer storage medium, it may include an operating system, a network communication module, a user interface module, and an evaluation application program for pollutant emissions in asphalt pavement construction.

[0102] In Figure 3 In the electronic device shown, the user interface 303 is mainly used to provide an input interface for the user to obtain the data input by the user; and the processor 301 can be used to call the evaluation application program for pollutant emissions in asphalt pavement construction stored in the memory 305. When executed by one or more processors 301, the electronic device is caused to execute one or more of the methods as described in the above embodiments. It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0103] The present application also provides a computer-readable storage medium, and the computer-readable storage medium stores instructions. When executed by one or more processors, the electronic device is caused to execute one or more of the methods as described in the above embodiments.

[0104] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0105] In several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some service interfaces. The indirect couplings or communication connections of devices or units can be in electrical or other forms.

[0106] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0107] In addition, each functional unit in various embodiments of the present application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0108] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in various embodiments of the present application. And the aforementioned memory includes: various media such as USB flash drives, mobile hard disks, magnetic disks, or optical discs that can store program codes.

[0109] The above are only exemplary embodiments disclosed in the present application and cannot be used to limit the scope of the disclosure of the present application. That is, any equivalent changes and modifications made in accordance with the teachings disclosed in the present application still fall within the scope covered by the disclosure of the present application.

[0110] The present application aims to cover any variations, uses, or adaptive changes of the present application disclosure, and these variations, uses, or adaptive changes follow the general principles of the present application disclosure and include common general knowledge or conventional technical means in the technical field not recorded in the present application disclosure.

Claims

1. An evaluation method for pollutant emissions in asphalt pavement construction, characterized in that, The method includes: Obtaining a target construction stage in the construction life cycle of an asphalt pavement, where the target construction stage is any construction stage in the construction life cycle; Obtaining a pollutant emission inventory corresponding to the target construction stage, and obtaining target pollutant emission data corresponding to the target construction stage according to the pollutant emission inventory; In a preset model database, obtaining a target environmental assessment model corresponding to the target construction stage, where the preset model database is used to store the correspondence between the target construction stage and the target environmental assessment model; Inputting the target pollutant emission data into the target environmental assessment model, and outputting a target inventory result corresponding to the target construction stage according to the target environmental assessment model; Confirming a pollutant emission assessment result corresponding to the target construction stage according to the target inventory result.

2. The method according to claim 1, characterized in that, Before obtaining the target construction stage in the construction life cycle of the asphalt pavement, the method further includes constructing the construction life cycle of the asphalt pavement: Classifying according to the technological characteristics of various activities in the asphalt pavement construction process, so as to construct the construction life cycle of the asphalt pavement according to the classification result. The construction life cycle of the asphalt pavement includes a raw material production stage, an asphalt mixture mixing stage, an asphalt mixture transportation stage, and an asphalt surface layer construction stage.

3. The method according to claim 2, characterized in that, Obtaining the target pollutant emission data corresponding to the target construction stage according to the pollutant emission inventory specifically includes: When the target construction stage is the raw material production stage, obtaining raw material quality data corresponding to the raw material production stage according to the pollutant emission inventory; When the target construction stage is the asphalt mixture mixing stage, obtaining energy consumption data, asphalt mixture production data, and total asphalt mixture data corresponding to the asphalt mixture mixing stage according to the pollutant emission inventory; When the target construction stage is the asphalt mixture transportation stage, obtaining consumed fuel type data and total transportation fuel consumption data corresponding to the asphalt mixture transportation stage according to the pollutant emission inventory; When the target construction stage is the asphalt surface layer construction stage, obtaining indirect emission data of the asphalt surface layer construction stage and direct emission data of the asphalt surface layer construction stage corresponding to the asphalt surface layer construction stage according to the pollutant emission inventory.

4. The method according to claim 3, wherein When the target construction stage is the asphalt surface layer construction stage, inputting the target pollutant emission data into the target environmental assessment model, and outputting a target inventory result corresponding to the target construction stage according to the target environmental assessment model specifically includes: Obtaining a construction site pollutant emission assessment model corresponding to the asphalt surface layer construction stage; Inputting the indirect emission data of the asphalt surface layer construction stage into the construction site pollutant emission assessment model, and outputting an indirect emission inventory result through the construction site pollutant emission assessment model according to the following formula; Among them, Q c(间)i is the emission amount of the i-th pollutant indirectly generated by the energy consumption during the construction stage of the asphalt surface course, W is the total number of mechanical equipment used during the construction stage, E 1w is the fuel gauge reading of the w-th mechanical equipment before construction, E 2w is the fuel gauge reading of the w-th mechanical equipment after construction, C w is the fuel tank capacity of the w-th mechanical equipment, EF wi is the emission factor corresponding to the i-th pollutant generated by the w-th mechanical equipment; Inputting the direct emission data of the asphalt surface layer construction stage into the construction site pollutant emission assessment model, and outputting a direct emission inventory result through the construction site pollutant emission assessment model according to the following formula: Among them, is the emission amount of the i-th pollutant directly generated by the energy consumption in the asphalt surface course construction stage, z is the specific process in the asphalt surface course construction stage, where z = 1 represents the paving process in the asphalt surface course construction stage, z = 2 represents the rolling process in the asphalt surface course construction stage, l z1 represents the sampling space length in the paving process or the rolling process, l z2 represents the sampling space width in the paving process or the rolling process, h z represents the sampling space height in the paving process or the rolling process, represents the concentration of the i-th pollutant in the paving process or the rolling process, t z represents the construction time of the paving process or the rolling process; Use the indirect emission inventory result and the direct emission inventory result as the target inventory result corresponding to the asphalt surface layer construction stage.

5. The method according to claim 1, wherein Confirm the pollutant emission evaluation result corresponding to the target construction stage according to the target inventory result: Obtain multiple environmental impact types corresponding to the target construction stage according to the target inventory result; Conduct an environmental impact assessment based on the multiple environmental impact types and obtain the pollutant emission evaluation result corresponding to the target construction stage.

6. The method according to claim 5, wherein Obtain multiple environmental impact types corresponding to the target construction stage according to the target inventory result, specifically including: Judge the environmental impact type corresponding to the target construction stage according to the pollutant type in the target inventory result, and the environmental impact type includes greenhouse effect type, acidification effect type, photochemical smog type, human health damage type, and water eutrophication type.

7. The method according to claim 6, wherein The environmental impact assessment is conducted according to the environmental impact type, and the pollutant emission evaluation result corresponding to the target construction stage is obtained, specifically including: Calculate multiple characterization results of the multiple environmental impact types respectively causing environmental pollution impacts on the target construction stage, and one environmental impact type corresponds to one characterization result; Perform normalization processing on the multiple characterization results and use the result of the normalization processing as the pollutant emission evaluation result.

8. An evaluation device for pollutant emissions in asphalt pavement construction, characterized in that, The device includes an acquisition module and a processing module, where The acquisition module is used to obtain the target construction stage in the construction life cycle of the asphalt pavement, and the target construction stage is any construction stage in the construction life cycle; obtain the pollutant emission inventory corresponding to the target construction stage, and obtain the target pollutant emission data corresponding to the target construction stage according to the pollutant emission inventory; in the preset model database, obtain the target environmental assessment model corresponding to the target construction stage, and the preset model database is used to store the correspondence between the target construction stage and the target environmental assessment model; The processing module is used to input the target pollutant emission data into the target environmental assessment model, and output the target inventory result corresponding to the target construction stage according to the target environmental assessment model; confirm the pollutant emission evaluation result corresponding to the target construction stage according to the target inventory result.

9. An electronic device, characterized in that, It includes a processor, a communication bus, a user interface, a network interface, and a memory. The memory is used to store instructions. The user interface and the network interface are used to communicate with other devices. The processor is used to execute the instructions stored in the memory so that the electronic device executes the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions, and when the instructions are executed, the method according to any one of claims 1 to 7 is executed.

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