A method, device and medium for identifying key sources of highway construction emissions and costs

Abstract

The present application discloses a method, equipment and medium for identifying key sources of highway construction emissions and costs, and relates to the field of highway construction. The method includes constructing a basic database; determining material emissions and mechanical equipment emissions using an emission factor method based on the basic database; determining material costs and mechanical equipment costs using a unit price method based on the basic database; establishing a material emission data table and a mechanical equipment emission data table; establishing a material cost data table and a mechanical equipment cost data table; determining the critical values ​​of key emission sources and the critical values ​​of key cost sources; determining multi-target key sources based on the critical values ​​of key emission sources and key cost sources; and performing homogeneity and heterogeneity analysis on multi-target key sources respectively. The present application can quickly and accurately identify key sources in the highway construction stage, thereby enabling precise carbon reduction and effective cost control.

Description

Technical Field

[0001] The present application relates to the field of highway construction, and in particular to a method, device and medium for identifying key sources of highway construction emissions and costs. Background Art

[0002] Carbon reduction and zero carbon in the highway construction stage are important contents of current relevant strategies. The main sources of carbon emissions in the highway construction stage are material production and energy consumption of on-site construction machinery and equipment; materials and machinery and equipment are also important components of costs; the development of low-carbon technology is constrained by costs, so the emission reduction effect and cost of low-carbon technology affect the carbon reduction of the entire highway infrastructure construction.

[0003] Under the current background, carbon emission reduction in highway construction needs to develop towards cost reduction and efficiency improvement. A large amount of materials and mechanical equipment are consumed during the construction process. However, the emission contribution of different materials and mechanical equipment varies. Therefore, in-depth analysis of key materials and mechanical equipment is crucial, which will help achieve cost reduction and efficiency improvement in carbon emission reduction during the highway construction stage. Key source identification is one of the effective ways to achieve carbon emission reduction and cost reduction and efficiency improvement. The distribution of key sources has the characteristics of large volume, wide sources, complex statistics, time-consuming and laborious. At present, the main sources of emissions in the highway construction stage are often determined artificially through emission accounting results. The determination results are highly subjective and lack systematic and scientific nature. Existing research on carbon emission reduction in highway construction mainly focuses on carbon emission reduction of materials such as cement and steel.

[0004] There is a certain correlation between key emission sources and key cost sources. A certain source may be both a key emission source and a key cost source. Therefore, it is necessary to further analyze the homogeneity and heterogeneity of key sources. Among them, the homogeneity of key sources means that a certain source is both a key emission source and a key cost source; heterogeneity means that a certain source is only a single key source. The analysis of the homogeneity and heterogeneity of key sources can better understand the relationship between emissions and costs, and better achieve carbon emission reduction, cost reduction and efficiency improvement in highway construction.

[0005] However, there is a lack of key source identification methods, that is, the identification of key sources lacks systematicity and scientificity. Based on the above, it can be seen that the current situation is not conducive to grasping the key to high carbon and high cost of highway construction;

[0006] Therefore, in order to achieve cost reduction and efficiency improvement in emissions during the highway construction phase, it is urgent to provide a key source identification method or equipment. Summary of the invention

[0007] The purpose of this application is to provide a method, equipment and medium for identifying key sources of highway construction emissions and costs, which can quickly and accurately identify key sources in the highway construction stage, thereby accurately reducing carbon emissions and effectively controlling costs.

[0008] To achieve the above objectives, this application provides the following solutions:

[0009] In a first aspect, the present application provides a method for identifying key sources of highway construction emissions and costs, the method for identifying key sources of highway construction emissions and costs comprising:

[0010] Constructing a basic database; the basic database includes: a material basic database and a mechanical equipment basic database; the material basic database is used to store material basic data; the material basic data includes: the code, name, activity level, emission factor and unit price of the material; the mechanical equipment basic database is used to store mechanical equipment basic data; the mechanical equipment basic data includes: the code, name, energy consumption, type of energy consumption, energy emission factor and unit price of the mechanical equipment;

[0011] Based on the basic database, the emission factor method is used to determine the material emissions and mechanical equipment emissions during the highway construction phase;

[0012] Based on the basic database, the unit price method is used to determine the material cost and machinery and equipment cost of the highway construction stage;

[0013] The material emissions and mechanical equipment emissions are sorted in ascending order according to the cumulative emission percentage rule, and a material emission data table and a mechanical equipment emission data table are established according to the corresponding sorting results and the basic database; the material emission data table includes: the code, name, emission percentage, cumulative percentage of material types and cumulative percentage of material emissions; the mechanical equipment emission data table includes: the code, name, emission percentage, cumulative percentage of mechanical equipment types and cumulative percentage of mechanical equipment emissions;

[0014] The material cost and the mechanical equipment cost are sorted in ascending order according to the cost cumulative proportion rule, and a material cost data table and a mechanical equipment cost data table are established according to the corresponding sorting results and the basic database; the material cost data table includes: the code, name, cost proportion, cumulative proportion of material types and cumulative proportion of material costs of the material; the mechanical equipment cost data table includes: the code, name, emission proportion, cumulative proportion of mechanical equipment types and cumulative proportion of mechanical equipment costs of the mechanical equipment;

[0015] Perform Lorenz curve fitting on the material emission data table, mechanical equipment emission data table, material cost data table and mechanical equipment cost data table respectively, and determine the critical values ​​of key emission sources and key cost sources according to the corresponding Lorenz curves;

[0016] According to the critical values ​​of emission key sources and cost key sources, the multi-objective key sources in the highway construction stage are determined respectively; the multi-objective key sources include: material emission key sources, material cost key sources, mechanical equipment emission key sources and mechanical equipment cost key sources;

[0017] The homogeneity and heterogeneity analysis are performed on the multi-target key sources respectively.

[0018] Optionally, the emission factor method is used according to the basic database to determine the material emissions and mechanical equipment emissions during the highway construction phase, specifically including:

[0019] Using Formula E i =A i ×f i And the formula E1=∑E i Determine the material emissions; where E i A is the emission of the i-th type of material; i is the activity level of the material in category i; i is the emission factor of the i-th type of material; E1 is the total emission of the material;

[0020] Using Formula E j =F j ×f j And the formula E2 = ∑E j ; Among them, E j is the emission of mechanical equipment j; F j is the energy consumption of mechanical equipment j; f j is the emission factor of the energy type consumed by mechanical equipment j, and E2 is the total emission of mechanical equipment.

[0021] Optionally, the method of using a unit price method to determine the material cost and mechanical equipment cost of the highway construction stage respectively according to the basic database includes:

[0022] Using formula C i =A i ×P i and C1=∑C i Determine the material cost; where C i is the cost of the i-th type of material; A i is the activity level of the i-th category material; P i is the unit price of the i-th type of material; C1 is the total cost of the material;

[0023] Using formula C j =F j ×P j and C2 = ∑C j Determine the cost of machinery and equipment; where C j is the cost of machinery j; Fj is the energy consumption of mechanical equipment j; P j is the unit price of the energy type consumed by mechanical equipment j; C2 is the total cost of mechanical equipment j.

[0024] Optionally, the material emissions and mechanical equipment emissions are sorted in ascending order according to the cumulative proportion of emissions, and a material emission data table and a mechanical equipment emission data table are established according to the corresponding sorting results and the basic database, specifically including:

[0025] Using the formula Determine the material emissions percentage;

[0026] Using the formula Determine the proportion of material types;

[0027] Using the formula Determine the cumulative share of material emissions;

[0028] Using the formula Determine the share of emissions from machinery and equipment;

[0029] Using the formula Determine the proportion of mechanical equipment types;

[0030] Using the formula Determine the cumulative share of emissions from machinery and equipment;

[0031] Among them, α Ei is the emission proportion of the i-th type of material; β n is the proportion of the top n types of materials after sorting by emissions, N is the total number of material types; α n is the cumulative proportion of emissions of the first n types of materials, E i is the emission of the i-th type of material, E1 is the total emission of the material, α Ej is the emission proportion of mechanical equipment j; β m is the proportion of the first m types of machinery and equipment after ranking by emissions, M is the total number of machinery and equipment types; α m is the cumulative proportion of emissions from the first m types of mechanical equipment, E j is the emission of mechanical equipment j, and E2 is the total emission of mechanical equipment.

[0032] Optionally, the material cost and the mechanical equipment cost are sorted in ascending order according to the cost cumulative proportion rule, and a material cost data table and a mechanical equipment cost data table are established according to the corresponding sorting results and the basic database, specifically including:

[0033] Using the formula Determine the material cost ratio;

[0034] Using the formula Determine the proportion of material types;

[0035] Using the formula Determine the cumulative percentage of material costs;

[0036] Using the formula Determine the proportion of machinery and equipment costs;

[0037] Using the formula Determine the proportion of mechanical equipment types;

[0038] Using the formula Determine the cumulative proportion of machinery and equipment costs;

[0039] Among them, α Ci is the cost proportion of the i-th type of material; β nc is the proportion of the first n types of materials after sorting by cost, N is the total number of material types; γ n is the cumulative proportion of the first n types of material costs, C i is the cost of the i-th type of material, α Cj is the cost proportion of mechanical equipment j; β mc is the proportion of the first m types of mechanical equipment after sorting by cost, M is the total number of mechanical equipment types; γ m is the cumulative proportion of the cost of the first m types of mechanical equipment, C1 is the total cost of materials, C j is the cost of mechanical equipment j, and C2 is the total cost of mechanical equipment j.

[0040] Optionally, the multi-objective key sources in the highway construction stage are determined respectively according to the critical values ​​of the key emission sources and the critical values ​​of the key cost sources, specifically including:

[0041] The cumulative proportion of the species when the derivative of the Lorenz curve function is 1 is taken as x a ;

[0042] Determine the cumulative proportion of classes in the data table and x a The data tables include: material emission data table, material cost data table, mechanical equipment emission data table and mechanical equipment cost data table;

[0043] When the absolute value reaches the minimum, the material or mechanical equipment with the code corresponding to the current category cumulative proportion is the first key source;

[0044] The cumulative proportion of the class corresponding to the first key source is taken as the critical value of the corresponding key source;

[0045] The materials or mechanical equipment whose class cumulative proportion in the corresponding data table is greater than or equal to the class cumulative proportion corresponding to the first key source are used as the multi-objective key sources for determining the highway construction stage.

[0046] Optionally, the performing homogeneity and heterogeneity analysis on the multiple target key sources respectively specifically includes:

[0047] Determine whether there is a key source with the same code as the key source of material cost among the key sources of material emission; if so, the key source of material emission and the key source of material cost are homogeneous; if not, the key source of material emission and the key source of material cost are heterogeneous;

[0048] Determine whether there are equal key sources between the codes of the key sources of mechanical equipment emissions and the codes of the key sources of mechanical equipment costs; if so, the key sources of mechanical equipment emissions and the key sources of mechanical equipment costs are homogeneous; if not, the key sources of mechanical equipment emissions and the key sources of mechanical equipment costs are heterogeneous.

[0049] In a second aspect, the present application provides a device for identifying key sources of highway construction emissions and costs, the device comprising:

[0050] A basic database construction module is used to construct a basic database; the basic database includes: a material basic database and a mechanical equipment basic database; the material basic database is used to store material basic data; the material basic data includes: the code, name, activity level, emission factor and unit price of the material; the mechanical equipment basic database is used to store mechanical equipment basic data; the mechanical equipment basic data includes: the code, name, energy consumption, type of energy consumption, energy emission factor and unit price of the mechanical equipment;

[0051] The emission determination module is used to determine the material emissions and mechanical equipment emissions during the highway construction phase respectively using the emission factor method based on the basic database;

[0052] The cost determination module is used to determine the material cost and mechanical equipment cost of the highway construction stage respectively according to the basic database and the unit price method;

[0053] The emission data table establishment module is used to sort the material emission and mechanical equipment emission in ascending order according to the cumulative emission proportion rule, and establish the material emission data table and the mechanical equipment emission data table according to the corresponding sorting results and the basic database; the material emission data table includes: the code, name, emission proportion, cumulative proportion of material type and cumulative proportion of material emission; the mechanical equipment emission data table includes: the code, name, emission proportion, cumulative proportion of mechanical equipment type and cumulative proportion of mechanical equipment emission;

[0054] The cost data table establishment module is used to sort the material cost and the mechanical equipment cost in ascending order according to the cost cumulative proportion rule, and establish the material cost data table and the mechanical equipment cost data table according to the corresponding sorting results and the basic database; the material cost data table includes: the code, name, cost proportion, cumulative proportion of material type and cumulative proportion of material cost; the mechanical equipment cost data table includes: the code, name, emission proportion, cumulative proportion of mechanical equipment type and cumulative proportion of mechanical equipment cost;

[0055] A critical value determination module for key sources, used to perform Lorenz curve fitting on the material emission data table, the mechanical equipment emission data table, the material cost data table and the mechanical equipment cost data table, and determine the critical value of the key emission source and the critical value of the key cost source based on the corresponding Lorenz curve;

[0056] A multi-objective key source determination module is used to determine the multi-objective key sources in the highway construction stage according to the critical values ​​of the emission key sources and the critical values ​​of the cost key sources; the multi-objective key sources include: material emission key sources, material cost key sources, mechanical equipment emission key sources and mechanical equipment cost key sources;

[0057] The homogeneity and heterogeneity analysis module is used to perform homogeneity and heterogeneity analysis on multiple target key sources respectively.

[0058] In a third aspect, the present application provides a computer device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for identifying key sources of highway construction emissions and costs.

[0059] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the method for identifying key sources of emissions and costs in highway construction.

[0060] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0061] The present application provides a method, equipment and medium for identifying key sources of emissions and costs in highway construction. By considering the emissions and costs of materials and mechanical equipment in the highway construction stage, a material emission data table, a mechanical equipment emission data table, a material cost data table and a mechanical equipment cost data table are established respectively; according to the critical values ​​of key emission sources and critical values ​​of key cost sources determined by the material emission data table, the mechanical equipment emission data table, the material cost data table and the mechanical equipment cost data table, multi-target key sources are identified, and then the homogeneity and heterogeneity of key emission sources and key cost sources in the multi-target key sources are analyzed, so as to facilitate precise carbon reduction and effective cost control; the present application standardizes the identification of key sources and enhances the visualization of identification results, and the homogeneity and heterogeneity analysis of multi-target key sources is conducive to formulating scientific and effective emission reduction paths, and is conducive to shifting the focus to sources with greater carbon emission reduction potential, and then carrying out targeted energy-saving and carbon reduction transformation, improving productivity and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0063] Figure 1 A schematic flow chart of a method for identifying key sources of highway construction emissions and costs provided in one embodiment of the present application;

[0064] Figure 2 It is a schematic diagram of the Lorenz curve;

[0065] Figure 3 Schematic diagram of the multi-target key source homogeneity and heterogeneity analysis process. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0067] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0068] In an exemplary embodiment, Figure 1As shown, a method for identifying key sources of highway construction emissions and costs is provided, the method comprising the following S101 to S108. Among them:

[0069] S101, constructing a basic database; the basic database includes: a material basic database and a mechanical equipment basic database; the material basic database is used to store material basic data; the material basic data includes: the code, name, activity level, emission factor and unit price of the material; the mechanical equipment basic database is used to store mechanical equipment basic data; the mechanical equipment basic data includes: the code, name, energy consumption, type of energy consumption, energy emission factor and unit price of the mechanical equipment;

[0070] Among them, the emission factor values ​​are obtained from various institutions, and the published values ​​are calibrated for validity and attribution, or they can be measured values. The energy consumption of mechanical equipment is obtained from "JTG-T3833-2018 Highway Engineering Machinery Unit Cost Quota". The basic database can be further expanded according to the actual situation of the project.

[0071] S102, based on the basic database, use the emission factor method to determine the material emissions and mechanical equipment emissions during the highway construction phase;

[0072] S102 specifically includes:

[0073] Using Formula E i =A i ×f i And the formula E1=∑E i Determine the material emissions; where E i A is the emission of the i-th type of material; i is the activity level of the material in category i; i is the emission factor of the i-th type of material; E1 is the total emission of the material;

[0074] Using Formula E j =F j ×f j And the formula E2 = ∑E j ; Among them, E j is the emission of mechanical equipment j; F j is the energy consumption of mechanical equipment j; f j is the emission factor of the energy type consumed by mechanical equipment j, and E2 is the total emission of mechanical equipment.

[0075] S103, based on the basic database, using the unit price method, determine the material cost and machinery and equipment cost of the highway construction stage respectively;

[0076] S103 specifically includes:

[0077] Using formula Ci =A i ×P i and C1=∑C i Determine the material cost; where C i is the cost of the i-th type of material; A i is the activity level of the i-th category material; P i is the unit price of the i-th type of material; C1 is the total cost of the material;

[0078] Using formula C j =F j ×P j and C2 = ∑C j Determine the cost of machinery and equipment; where C j is the cost of machinery j; F j is the energy consumption of mechanical equipment j; P j is the unit price of the energy type consumed by mechanical equipment j; C2 is the total cost of mechanical equipment j.

[0079] S104, sorting the material emissions and mechanical equipment emissions in ascending order according to the cumulative emission proportion rule, and establishing a material emission data table and a mechanical equipment emission data table according to the corresponding sorting results and the basic database; as shown in Table 1, the material emission data table includes: the code, name, emission proportion, cumulative proportion of material types and cumulative proportion of material emissions; as shown in Table 2, the mechanical equipment emission data table includes: the code, name, emission proportion, cumulative proportion of mechanical equipment types and cumulative proportion of mechanical equipment emissions;

[0080] Table 1

[0081]

[0082] Table 2

[0083]

[0084] S104 specifically includes:

[0085] Using the formula Determine the material emissions percentage;

[0086] Using the formula Determine the proportion of material types;

[0087] Using the formula Determine the cumulative share of material emissions;

[0088] Using the formula Determine the share of emissions from machinery and equipment;

[0089] Using the formula Determine the proportion of mechanical equipment types;

[0090] Using the formula Determine the cumulative share of emissions from machinery and equipment;

[0091] Among them, α Ei is the emission proportion of the i-th type of material; β n is the proportion of the top n types of materials after sorting by emissions, N is the total number of material types; α n is the cumulative proportion of emissions of the first n types of materials, E i is the emission of the i-th type of material, E1 is the total emission of the material, α Ej is the emission proportion of mechanical equipment j; β m is the proportion of the first m types of machinery and equipment after ranking by emissions, M is the total number of machinery and equipment types; α m is the cumulative proportion of emissions from the first m types of mechanical equipment, E j is the emission of mechanical equipment j, and E2 is the total emission of mechanical equipment.

[0092] S105, sorting the material cost and the mechanical equipment cost in ascending order according to the cost cumulative proportion rule, and establishing a material cost data table and a mechanical equipment cost data table according to the corresponding sorting results and the basic database; the material cost data table includes: the code, name, cost proportion, cumulative proportion of material type and cumulative proportion of material cost; the mechanical equipment cost data table includes: the code, name, emission proportion, cumulative proportion of mechanical equipment type and cumulative proportion of mechanical equipment cost;

[0093] S105 specifically includes:

[0094] Using the formula Determine the material cost ratio;

[0095] Using the formula Determine the proportion of material types;

[0096] Using the formula Determine the cumulative percentage of material costs;

[0097] Using the formula Determine the proportion of machinery and equipment costs;

[0098] Using the formula Determine the proportion of mechanical equipment types;

[0099] Using the formula Determine the cumulative proportion of machinery and equipment costs;

[0100] Among them, α Ci is the cost proportion of the i-th type of material; β ncis the proportion of the first n types of materials after sorting by cost, N is the total number of material types; γ n is the cumulative proportion of the first n types of material costs, C i is the cost of the i-th type of material, α Cj is the cost proportion of mechanical equipment j; β mc is the proportion of the first m types of mechanical equipment after sorting by cost, M is the total number of mechanical equipment types; γ m is the cumulative proportion of the cost of the first m types of mechanical equipment, C1 is the total cost of materials, C j is the cost of mechanical equipment j, and C2 is the total cost of mechanical equipment j.

[0101] S106, performing Lorenz curve fitting on the material emission data table, the mechanical equipment emission data table, the material cost data table, and the mechanical equipment cost data table, respectively, and determining the critical value of the key emission source and the critical value of the key cost source according to the corresponding Lorenz curve;

[0102] When fitting the Lorenz curve of the material emission data table and the mechanical equipment emission data table, the cumulative proportion of types is used as the x-axis, and the cumulative proportion of emissions is used as the y-axis;

[0103] When fitting the Lorenz curve of the material cost data table and the mechanical equipment cost data table, the cumulative proportion of the class is used as the x-axis and the cumulative proportion of the cost is used as the y-axis;

[0104] In a specific embodiment, material emission is analyzed as an example, a Lorenz curve is fitted according to the established material emission data table, and then the Gini coefficient is calculated according to the Lorenz curve; the specific steps are as follows:

[0105] S1, perform material emission Lorentz curve fitting;

[0106] Among them, the x-axis data and y-axis data of the material emission data table are fitted using Python software, and the material emission Lorentz curve function L=f(x) is obtained by fitting;

[0107] S2, calculate the Gini coefficient based on the fitted material emission Lorenz curve;

[0108] The Gini coefficient is an indicator to measure the concentration of key sources between projects. The larger the Gini coefficient, the more concentrated the key sources are, and vice versa. As the Gini coefficient increases, the difficulty of carbon emission reduction control of the project decreases; on the contrary, a decrease in the Gini coefficient indicates that the difficulty of carbon emission reduction control of the project increases. The area enclosed by the Lorenz curve and the absolute fairness line is defined as SA. The absolute fairness line is an ideal emission distribution line with a slope of 1. The area below the Lorenz curve is SB, and the Gini coefficient G is:

[0109]

[0110] On the Lorenz curve of material emissions, the x-axis represents the cumulative proportion of material types, and the y-axis represents the cumulative proportion of material emissions. The larger the slope of the curve, the more unbalanced the distribution of material emissions, that is, a few materials contribute a larger proportion of the total material emissions; conversely, the smaller the slope, the more balanced the distribution of material emissions, and more materials contribute to the total material emissions. Figure 2 As shown, the absolute fairness line represents a completely balanced emission distribution. On the Lorenz curve, when the slope is less than 1, it indicates that the emission distribution has a relatively low degree of balance; when the slope is greater than 1, it indicates that the emission distribution is unbalanced. The critical value is determined based on the inflection point of the curve (i.e., the point of tangency when the tangent line of the curve is parallel to the absolute fairness line, and the slope of the tangent line is 1).

[0111] Take the derivative of the material emission Lorentz curve function and find the x value where the slope is 1:

[0112] Derivative of the material emission Lorentz curve function:

[0113] L′=f′(x);

[0114] Find the value of x when the derivative is equal to 1;

[0115] S107, determining the multi-objective key sources in the highway construction stage according to the critical values ​​of the key emission sources and the critical values ​​of the key cost sources; the multi-objective key sources include: key sources of material emission, key sources of material cost, key sources of mechanical equipment emission, and key sources of mechanical equipment cost;

[0116] In the material emission data table, the material with the minimum absolute distance between x and the x value when the slope is 1 is the first key source. The specific determination process is as follows:

[0117] (1) Let the x value when the derivative of the material emission Lorentz curve function is 1 be x a ;

[0118] (2) Column x and x in the material emission data table a The absolute value of the difference is:

[0119] |xx a |;

[0120] (3) When the absolute value function | a |When the minimum value is obtained, the material with the code corresponding to x is the first key emission source, that is:

[0121] min(|xx a |);

[0122] (4) Set this x to x A , x Ais the critical value of the key source of material emission, x A The corresponding material is the first key source of emissions.

[0123] (5) If x ≥ x A , then the material with the code corresponding to x is the key emission source;

[0124] (6) Key sources of output material emissions.

[0125] S108, respectively perform homogeneity and heterogeneity analysis on the multi-target key sources. In order to facilitate the analysis, a material key source data table and a mechanical equipment key source data table are constructed based on the multi-target key sources; the material key source data table includes: a material emission key source data table and a material cost key source data table; the mechanical equipment key source data table includes: a mechanical equipment emission key source data table and a mechanical equipment cost key source data table;

[0126] The key source data table of material emissions includes the code, name, emission amount (E i ) and ranking (R); ranking is based on emissions (E i ) value to determine;

[0127] The key source data table of material cost includes the code, name, cost (C i ) and ranking (R); ranking according to cost (C i ) value to determine.

[0128] The key source data table of mechanical equipment emissions includes the code, name, emission amount (E j ) and ranking (R); ranking is based on emissions (E j ) value to determine;

[0129] The key source data table of mechanical equipment cost includes the code, name, cost (C j ) and ranking (R); ranking according to cost (C j ) value to determine;

[0130] like Figure 3 As shown, S108 specifically includes:

[0131] Determine whether there is a key source with the same code as the key source of material cost among the key sources of material emissions; if so, the key source of material emissions and the key source of material cost are homogeneous; if not, the key source of material emissions and the key source of material cost are heterogeneous.

[0132] In homogeneity, the characteristics are high emissions and high costs, and the synergistic potential between emission reduction and cost control is great, so emission reduction can reduce costs. In heterogeneity, the characteristics are high emissions and low costs or low emissions and high costs, and the synergistic potential is small, so the control object needs to be determined according to different needs.

[0133] Based on the same inventive concept, the embodiment of the present application also provides a highway construction emission and cost key source identification device for implementing the above-mentioned highway construction emission and cost key source identification method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more highway construction emission and cost key source identification device embodiments provided below can refer to the limitations of the highway construction emission and cost key source identification method above, and will not be repeated here.

[0134] In an exemplary embodiment, a device for identifying key sources of highway construction emissions and costs is provided, comprising:

[0135] A basic database construction module is used to construct a basic database; the basic database includes: a material basic database and a mechanical equipment basic database; the material basic database is used to store material basic data; the material basic data includes: the code, name, activity level, emission factor and unit price of the material; the mechanical equipment basic database is used to store mechanical equipment basic data; the mechanical equipment basic data includes: the code, name, energy consumption, type of energy consumption, energy emission factor and unit price of the mechanical equipment;

[0136] The emission determination module is used to determine the material emissions and mechanical equipment emissions during the highway construction phase respectively using the emission factor method based on the basic database;

[0137] The cost determination module is used to determine the material cost and mechanical equipment cost of the highway construction stage respectively according to the basic database and the unit price method;

[0138] The emission data table establishment module is used to sort the material emission and mechanical equipment emission in ascending order according to the cumulative emission proportion rule, and establish the material emission data table and the mechanical equipment emission data table according to the corresponding sorting results and the basic database; the material emission data table includes: the code, name, emission proportion, cumulative proportion of material type and cumulative proportion of material emission; the mechanical equipment emission data table includes: the code, name, emission proportion, cumulative proportion of mechanical equipment type and cumulative proportion of mechanical equipment emission;

[0139] The cost data table establishment module is used to sort the material cost and the mechanical equipment cost in ascending order according to the cost cumulative proportion rule, and establish the material cost data table and the mechanical equipment cost data table according to the corresponding sorting results and the basic database; the material cost data table includes: the code, name, cost proportion, cumulative proportion of material type and cumulative proportion of material cost; the mechanical equipment cost data table includes: the code, name, emission proportion, cumulative proportion of mechanical equipment type and cumulative proportion of mechanical equipment cost;

[0140] A critical value determination module for key sources, used to perform Lorenz curve fitting on the material emission data table, the mechanical equipment emission data table, the material cost data table and the mechanical equipment cost data table, and determine the critical value of the key emission source and the critical value of the key cost source based on the corresponding Lorenz curve;

[0141] A multi-objective key source determination module is used to determine the multi-objective key sources in the highway construction stage according to the critical values ​​of the emission key sources and the critical values ​​of the cost key sources; the multi-objective key sources include: material emission key sources, material cost key sources, mechanical equipment emission key sources and mechanical equipment cost key sources;

[0142] The homogeneity and heterogeneity analysis module is used to perform homogeneity and heterogeneity analysis on multi-target key sources respectively.

[0143] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0144] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0145] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0146] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0147] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0148] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0149] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0150] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for identifying key sources of highway construction emissions and costs, characterized in that: The method for identifying key sources of highway construction emissions and costs includes: Constructing a basic database; the basic database includes: a material basic database and a mechanical equipment basic database; the material basic database is used to store material basic data; the material basic data includes: the code, name, activity level, emission factor and unit price of the material; the mechanical equipment basic database is used to store mechanical equipment basic data; the mechanical equipment basic data includes: the code, name, energy consumption, type of energy consumption, energy emission factor and unit price of the mechanical equipment; Based on the basic database, the emission factor method is used to determine the material emissions and mechanical equipment emissions during the highway construction phase; Based on the basic database, the unit price method is used to determine the material cost and machinery and equipment cost of the highway construction stage; The material emissions and mechanical equipment emissions are sorted in ascending order according to the cumulative emission percentage rule, and a material emission data table and a mechanical equipment emission data table are established according to the corresponding sorting results and the basic database; the material emission data table includes: the code, name, emission percentage, cumulative percentage of material types and cumulative percentage of material emissions; the mechanical equipment emission data table includes: the code, name, emission percentage, cumulative percentage of mechanical equipment types and cumulative percentage of mechanical equipment emissions; The material cost and the mechanical equipment cost are sorted in ascending order according to the cost cumulative proportion rule, and a material cost data table and a mechanical equipment cost data table are established according to the corresponding sorting results and the basic database; the material cost data table includes: the code, name, cost proportion, cumulative proportion of material types and cumulative proportion of material costs of the material; the mechanical equipment cost data table includes: the code, name, emission proportion, cumulative proportion of mechanical equipment types and cumulative proportion of mechanical equipment costs of the mechanical equipment; Perform Lorenz curve fitting on the material emission data table, mechanical equipment emission data table, material cost data table and mechanical equipment cost data table respectively, and determine the critical values ​​of key emission sources and key cost sources according to the corresponding Lorenz curves; According to the critical values ​​of emission key sources and cost key sources, the multi-objective key sources in the highway construction stage are determined respectively; the multi-objective key sources include: material emission key sources, material cost key sources, mechanical equipment emission key sources and mechanical equipment cost key sources; The homogeneity and heterogeneity analysis are performed on the multi-target key sources respectively.

2. The method for identifying key sources of highway construction emissions and costs according to claim 1, characterized in that: According to the basic database, the emission factor method is used to determine the material emissions and mechanical equipment emissions during the highway construction phase, including: Using Formula E i =A i ×f i And the formula E1=∑E i Determine the material emissions; where E i A is the emission of the i-th type of material; i is the activity level of the material in category i; i is the emission factor of the i-th type of material; E1 is the total emission of the material; Using Formula E j =F j ×f j And the formula E2 = ∑E j ; Among them, E j is the emission of mechanical equipment j; F j is the energy consumption of mechanical equipment j; fj is the emission factor of the energy type consumed by mechanical equipment j, and E2 is the total emission of mechanical equipment.

3. The method for identifying key sources of highway construction emissions and costs according to claim 1, characterized in that: According to the basic database, the unit price method is used to determine the material cost and mechanical equipment cost of the highway construction stage, including: Using formula C i =A i ×P i and c1=∑C i Determine the material cost; where C i is the cost of the i-th type of material; A i is the activity level of the i-th category material; P i is the unit price of the i-th type of material; C1 is the total cost of the material; Using formula C j =F j ×P j and c2=∑C j Determine the cost of machinery and equipment; where C j is the cost of machinery j; F j is the energy consumption of mechanical equipment j; P j is the unit price of the energy type consumed by mechanical equipment j; C2 is the total cost of mechanical equipment j.

4. The method for identifying key sources of highway construction emissions and costs according to claim 1, characterized in that: The material emissions and mechanical equipment emissions are sorted in ascending order according to the cumulative proportion of emissions, and a material emission data table and a mechanical equipment emission data table are established based on the corresponding sorting results and the basic database, specifically including: Using the formula Determine the material emissions share; Using the formula Determine the proportion of material types; Using the formula Determine the cumulative share of material emissions; Using the formula Determine the share of emissions from machinery and equipment; Using the formula Determine the proportion of mechanical equipment types; Using the formula Determine the cumulative share of emissions from machinery and equipment; Among them, α Ei is the emission proportion of the i-th type of material; β n is the proportion of the top n types of materials after sorting by emissions, N is the total number of material types; α n is the cumulative proportion of emissions of the first n types of materials, E i is the emission of the i-th type of material, E1 is the total emission of the material, α Ej is the emission proportion of mechanical equipment j; β m is the proportion of the first m types of machinery and equipment after ranking by emissions, M is the total number of machinery and equipment types; α m is the cumulative proportion of emissions from the first m types of mechanical equipment, E j is the emission of mechanical equipment j, and E2 is the total emission of mechanical equipment.

5. The method for identifying key sources of highway construction emissions and costs according to claim 1, characterized in that: The material cost and mechanical equipment cost are sorted in ascending order according to the cost cumulative proportion rule, and according to the corresponding sorting results and the basic database, the material cost data table and the mechanical equipment cost data table are established, including: Using the formula Determine the material cost percentage; Using the formula Determine the proportion of material types; Using the formula Determine the cumulative percentage of material costs; Using the formula Determine the proportion of machinery and equipment costs; Using the formula Determine the proportion of mechanical equipment types; Using the formula Determine the cumulative proportion of machinery and equipment costs; Among them, α Ci is the cost proportion of the i-th type of material; β nc is the proportion of the first n types of materials after sorting by cost, N is the total number of material types; γ n is the cumulative proportion of the first n types of material costs, C i is the cost of the i-th type of material, α Cj is the cost proportion of mechanical equipment j; β mc is the proportion of the first m types of mechanical equipment after sorting by cost, M is the total number of mechanical equipment types; γ m is the cumulative proportion of the cost of the first m types of mechanical equipment, C1 is the total cost of materials, C j is the cost of mechanical equipment j, and C2 is the total cost of mechanical equipment j.

6. The method for identifying key sources of highway construction emissions and costs according to claim 1, characterized in that: The multi-objective key sources in the highway construction stage are determined according to the critical values ​​of the key emission sources and the critical values ​​of the key cost sources, specifically including: The cumulative proportion of species when the derivative of the Lorenz curve function is 1 is taken as x a; Determine the cumulative proportion of classes in the data table and x a is the absolute value of the difference; the data tables include: material emission data table, material cost data table, mechanical equipment emission data table and mechanical equipment cost data table; When the absolute value reaches the minimum, the material or mechanical equipment with the code corresponding to the current category cumulative proportion is the first key source; The cumulative proportion of the class corresponding to the first key source is taken as the critical value of the corresponding key source; The materials or mechanical equipment whose class cumulative proportion in the corresponding data table is greater than or equal to the class cumulative proportion corresponding to the first key source are used as the multi-objective key sources for determining the highway construction stage.

7. The method for identifying key sources of highway construction emissions and costs according to claim 1, characterized in that: The homogeneity and heterogeneity analysis of the multi-target key sources respectively includes: Determine whether there is a key source with the same code as the key source of material cost among the key sources of material emissions; if so, the key source of material emissions and the key source of material cost are homogeneous; if not, the key source of material emissions and the key source of material cost are heterogeneous.

8. A device for identifying key sources of highway construction emissions and costs, characterized in that: The equipment for identifying key sources of highway construction emissions and costs includes: A basic database construction module is used to construct a basic database; the basic database includes: a material basic database and a mechanical equipment basic database; the material basic database is used to store material basic data; the material basic data includes: the code, name, activity level, emission factor and unit price of the material; the mechanical equipment basic database is used to store mechanical equipment basic data; the mechanical equipment basic data includes: the code, name, energy consumption, type of energy consumption, energy emission factor and unit price of the mechanical equipment; The emission determination module is used to determine the material emissions and mechanical equipment emissions during the highway construction phase respectively using the emission factor method based on the basic database; The cost determination module is used to determine the material cost and mechanical equipment cost of the highway construction stage respectively according to the basic database and the unit price method; The emission data table establishment module is used to sort the material emission and mechanical equipment emission in ascending order according to the cumulative emission proportion rule, and establish the material emission data table and the mechanical equipment emission data table according to the corresponding sorting results and the basic database; the material emission data table includes: the code, name, emission proportion, cumulative proportion of material type and cumulative proportion of material emission; the mechanical equipment emission data table includes: the code, name, emission proportion, cumulative proportion of mechanical equipment type and cumulative proportion of mechanical equipment emission; The cost data table establishment module is used to sort the material cost and the mechanical equipment cost in ascending order according to the cost cumulative proportion rule, and establish the material cost data table and the mechanical equipment cost data table according to the corresponding sorting results and the basic database; the material cost data table includes: the code, name, cost proportion, cumulative proportion of material type and cumulative proportion of material cost; the mechanical equipment cost data table includes: the code, name, emission proportion, cumulative proportion of mechanical equipment type and cumulative proportion of mechanical equipment cost; A critical value determination module for key sources, used to perform Lorenz curve fitting on the material emission data table, the mechanical equipment emission data table, the material cost data table and the mechanical equipment cost data table, and determine the critical value of the key emission source and the critical value of the key cost source based on the corresponding Lorenz curve; A multi-objective key source determination module is used to determine the multi-objective key sources in the highway construction stage according to the critical values ​​of the emission key sources and the critical values ​​of the cost key sources; the multi-objective key sources include: material emission key sources, material cost key sources, mechanical equipment emission key sources and mechanical equipment cost key sources; The homogeneity and heterogeneity analysis module is used to perform homogeneity and heterogeneity analysis on multi-target key sources respectively.

9. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for identifying key sources of highway construction emissions and costs as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for identifying key sources of highway construction emissions and costs as described in any one of claims 1 to 7 is implemented.

Images