CN108647872A - A kind of ardealite base material life cycle environmental impact method for quantitatively evaluating - Google Patents
A kind of ardealite base material life cycle environmental impact method for quantitatively evaluating Download PDFInfo
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Abstract
The invention discloses a kind of ardealite base material life cycle environmental impact method for quantitatively evaluating, research purpose and range based on ardealite road surface base layer material evaluation of life cycle, its life cycle is divided, it is more comprehensive to the assessment of material life cycle environmental impact；The global of influence is investigated comprehensively in the classification of road pavement base material environment influence type, the factors such as regional and locality, it more can intuitively embody influence degree of the ardealite road surface base layer material to environment, calculate analysis ardealite road surface base layer material within five stages of life cycle to environment total load on the basis of carry out evaluation of life cycle work, determine the stage having greater environmental impacts in whole life cycle and main influence type, and Improving advice is proposed to ardealite road surface base layer material, not only improving reduces ardealite road surface base layer material in life cycle to the load of environment, highway engineering can be widely used in for ardealite again, environmentally friendly foundation is provided.
Description
Technical field
The present invention relates to road engineering environmental technology fields, and in particular to a kind of ardealite base material life cycle environment
Influence method for quantitatively evaluating.
Background technology
Material raw material exploitation, production, prepare, processing, using with a large amount of various types can be consumed in regenerative process
Resource and the energy, and the various pollutants such as a large amount of exhaust gas, waste water and waste residue are generated in these production processes.China is annual
The quantities of sub-surface has been over 6 billion cubic meters, domestic at present to stablize soil frequently with inorganic binder or industrial residue
The underlayment that roadbed or two level are done to get down the highway, ardealite can also be used to compacted soil, but tradition as one kind of industrial residue
Inorganic binder it is larger to the load of environment in the production and use process, therefore, it is domestic just gradually carrying out using ardealite,
The industrial residues such as slag substitute traditional inorganic binder compacted soil to reduce the application study of carrying capacity of environment.Currently, domestic phosphorus
The accumulative volume of cargo in storage of gypsum more than 300,000,000 tons, and year utilization rate it is relatively low, volume of cargo in storage is still with annual 20000000 tons of rate delivery
Increase, the harm of environment is also being aggravated year by year.
Cycle assessment method is as what each stage environment of a set of overall merit product systems life cycle influenced
System method, its basic thought, which is to analyze comprehensively, considers different phase in highway life-cycle processes, different factors to environment
Influence.And road surface base layer material is present in the entire life process of highway construction, meanwhile, evaluation of life cycle Fa highways neck
The application in domain is less, and evaluation method and system are yet to be completed.Therefore, a kind of there is an urgent need to results reliable, highly practical and energy
Reflect the method for quantitatively evaluating of ardealite base material effect on environment.
Invention content
The purpose of the present invention is to provide a kind of ardealite base material life cycle environmental impact method for quantitatively evaluating, with
Overcome the deficiencies in the prior art：
A kind of ardealite base material life cycle environmental impact method for quantitatively evaluating, includes the following steps：
Step 1), ardealite road surface base layer material life cycle phase divide：
Ardealite road surface base layer material life cycle is divided into raw material to obtain, prepared by binder, prepared by mixture, fortune
Row maintenance, five stages of waste reconstituted circularly；
Step 2), ardealite road surface base layer material life cycle environmental impact inventory calculate：
Determine that ardealite road surface base layer material environment influences type, the environment based on synergic system influences basic data and calculates
Ardealite road surface base layer material influences the environment under type in life cycle different phase and varying environment influences listings data；
Step 3), ardealite road surface base layer material equivalent environment influence latent value and calculate：
The Different Effects factor under type, which is influenced, according to each environment of ardealite road surface base layer material life cycle compares different rings
Border influences the equivalent value of type object of reference, and the environmental influence value of the Different Effects factor, which is scaled each environment, influences type object of reference
Equivalence factor data, i.e. environment influences latent value；Reduction formula presses formula (1)：
EP (j)=∑ EP (j)=∑ [Qi×EF(j)i] (1)
In formula, EP (j) is the latent value of influence that jth kind environment influences type；EP(j)iIt is i-th kind of impact factor to jth kind
Influence the latent value of influence of type；QiFor the discharge capacity of i-th kind of impact factor；EF(j)iJth kind is influenced for i-th kind of impact factor
The equivalent value of type；
Step 4), ardealite road surface base layer material life-cycle processes influence latent value standardization：
Selection environment influences latent value equivalent basis value, and each environment of ardealite road surface base layer material life-cycle processes is influenced
The latent value standardization of the influence of type, obtains the overall target that each environment influences in ardealite road surface base layer material life cycle, mark
Calculation formula presses formula (2) used by the environment of road surface base layer material influences latent value standardization after standardization：
In formula, NP (j) is the latent value of influence of jth kind environment influence type after standardization；EP (j) influences for jth kind environment
The latent value of the influence of type；T is the service of goods period；ER (j) is annual social resources quota of expenditure a reference value；
Step 5), ardealite road surface base layer material life cycle environmental impact total load calculate：
Latent value is influenced based on the environment after ardealite road surface base layer material whole life cycle internal standardization, in conjunction with each environment
The weighted value for influencing type is weighted, and calculates total load value of the life cycle different phase to environmental system, and calculation formula is pressed
Formula (3)：
EIL=∑ WP (j)=∑ [WF (j) × NP (j)] (3)
In formula, EIL, which is environment, influences load；WP (j) is the latent value of influence of jth kind environment influence type after weighting；WF(j)
The weighted value of type is influenced for jth kind environment；NP (j) is the latent value of influence of jth kind environment influence type after standardization；
Step 6), ardealite road surface base layer material life cycle impact assessment：
It is influenced under type in life cycle different phase and varying environment by comparative analysis ardealite road surface base layer material
Environment influence total load value proportion, proportion is bigger, influence it is more serious.
Further, in step 3), the equivalent value of the Different Effects factor in type, convolution (1) are influenced according to each environment
The related data of each type Different Effects factor in listings data is quantified as the size of same unit and on each influence type
Equivalence factor data summarized.
Further, in step 4), the calculating for annual social resources quota of expenditure benchmark is worked as using normed space
Amount.
Further, in step 5), the weighted value of varying environment type is calculated using improved H IAHP.
Further, step 5) ardealite road surface base layer material life cycle environmental impact total load calculates：
1), life-cycle processes influence latent value weight calculation：
Establishing ardealite lime stablized soil environment influences the hierarchical relationship of quantitative target；
To each factor of evaluation carry out two-by-two important ratio compared with, obtain Integrated comparative matrix, according to significance level sort index
Construct corresponding judgment matrix；
The calculation formula of judgment matrix is shown in formula (5) (6)
In formula, aijFor the respective element in judgment matrix；riFor significance level sequence index；M is matrix exponent number；kijFor than
Compared with the respective element in matrix；
According to judgment matrix A=(aij)m×m, then the respective element in (7) calculation optimization matrix as the following formula, and optimized
Matrix B=(bij)m×m。
Then it is calculated by formula (7)
Calculate weighted value：
The calculating of the weighted value of first class index and normalized, obtaining each environment influences the weight of first class index of type
Coefficient is shown in formula (8), formula (9).
In formula,For the single weighted value of i-th of first class index；M is grade index number；Wi is i-th of first class index
Normalized weight value；
The relative weighting that the latent value of influence after standardization combines varying environment to influence type is weighted according to formula (4),
In formula, kijFor the importance quantized value of factor i and factor j；
Finally acquiring each environment in unit ardealite lime stablized soil life cycle influences the overall target after weighting
Value.
Further, wherein environmental impact indicators U is made of 6 first class index, i.e. ardealite lime stablized soil ring
Border influence factor integrates as U={ u1, u2, u3, u4, u5, u6, wherein u1, u2, u3, u4, u5, u6Respectively resource consumption, the whole world become
Warm, acidification, eutrophication, ozone layer depletion and photochemical ozone synthesis；
Each the factor of first class index is determined by n factor in several two-level index again, i.e.,：u1={ u11, u12,
u13, u2={ u21, u22, u23, u3={ u31, u32, u4={ u41, u5={ u51, u52, u53, u54, u6={ u61}。
Further, in step 6), type is influenced to ardealite lime stablized soil material institute by obtaining each environment
Caused by environment influence overall target shared by equivalent value carry out size sequence, you can complete ardealite base material life cycle ring
Border influences quantitatively evaluating.
Compared with prior art, the present invention has technique effect beneficial below：
A kind of ardealite base material life cycle environmental impact method for quantitatively evaluating of the present invention, is based on ardealite road surface base
Its life cycle is divided into raw material and obtained by the research purpose and range of layer material evaluation of life cycle, and prepared by binder, mix
It closes material to prepare, operation and maintenance are five stages of waste reconstituted circularly, more complete to the assessment of material life cycle environmental impact
Face；Road pavement base material environment influence type classification in investigate comprehensively global, regional and locality of influence etc. because
Element, calculate influences type in road surface base layer material different phase in life cycle in varying environment influences the environment of environmental system
Total load value more can intuitively embody influence degree of the ardealite road surface base layer material to environment, and meet China's engineering
Present situation analyzes ardealite road surface base layer material within five stages of life cycle to being carried out on the basis of environment total load calculating
Evaluation of life cycle works, and determines the stage having greater environmental impacts in whole life cycle and main influence type, and right
Ardealite road surface base layer material proposes Improving advice, and not only improving reduces ardealite road surface base layer material in life cycle to ring
The load in border, and highway engineering can be widely used in for ardealite, environmentally friendly foundation is provided.
The relative weighting that the latent value combination varying environment of influence after standardization influences type is weighted according to formula, is finally acquired every
Each environment influences the overall target after weighting in cubic meter ardealite lime stablized soil life cycle, to life cycle
Environmental impact assessment is by analyzing ardealite lime stablized soil life cycle environmental impact data, so that it is determined that comprehensive
It closes in stabilized soil road sill whole life cycle and contributes carrying capacity of environment larger factor, based on this and propose that some are conducive to
Reduce resource consumption, the measure of pollution abatement object discharge.
Description of the drawings
Fig. 1 is ardealite road surface base layer material life cycle phase schematic diagram；
Fig. 2 is the system boundary schematic diagram of ardealite road surface base layer material life cycle research range；
Fig. 3 is ardealite road surface base layer material inventory analysis base region schematic diagram；
Fig. 4 is influence overall target schematic diagram of the ardealite lime stablized soil life cycle different phase to environment；
Fig. 5 is shadow of the ardealite lime stablized soil life cycle Different Effects type to environment
Ring overall target schematic diagram；
Fig. 6 is that the resource consumption substance yield of ardealite rendzinas comprehensive stable soil life cycle different phase characterizes
Result schematic diagram；
Fig. 7 is that the global warming substances yield of ardealite rendzinas comprehensive stable soil life cycle different phase characterizes
Result schematic diagram.
Specific implementation mode
As shown in Figure 1 to Figure 3, in order to embody ardealite road surface base layer material life cycle impact assessment meter as far as possible
Calculation process, the present invention choose 1m3Calculating analysis is carried out for ardealite lime stablized soil mixture, service life is pressed 20 years
It calculates.The match ratio selection requirements of ardealite lime stablized soil are：The 7d ages of used match ratio test specimen are anti-without lateral spacing
Compressive Strength meets specification for two level and two level with underlayment 7d age unconfined compressive strength minimums requirement of getting down the highway, and passes through nothing
What confined compression strength test finally screened represents mix-design scheme as lime：Ardealite：Soil=5:3:92, according to hitting reality
The determining mixture maximum dry density of experiment is 1.80g/cm3, calculate 1m3It is each in ardealite lime stablized soil mixture
Component content is respectively：Calcium hydroxide 90kg, ardealite 285.6kg, native 1656kg.
It is comprehensive to ardealite lime based on above-mentioned ardealite road surface base layer material life cycle impact assessment pattern
Closing stable soil, environment influence is studied caused by different phase in life cycle, analyzes each stage and each environment influence type
The latent value of influence and environmental influence value, finding out environment more important in the road surface base layer material Product Life Periodic Process influences rank
Section and environmental impact factor propose Improving Measurements.Below by taking ardealite lime stablized soil as an example in conjunction with attached drawing to the present invention
It is described in further detail：
Step 1, ardealite lime stablized soil life cycle phase divide
In view of the actual conditions of case, ardealite lime stablized soil be generally only used as in Practical Project roadbed or
The underlayment of low-grade highway, therefore load and the natural cause erosion being subject to during use are smaller, therefore durability is good, and make
With not conserved in the process to it, carrying capacity of environment is not considered caused by operation maintenance and reconstituted circularly process, therefore
To the research of ardealite lime stablized soil evaluation of life cycle only investigate raw material obtain the stage, binder preparatory phase,
The environment of mixture preparatory phase influences, these three stages are directed to resource consumption, exhaust gas, solid waste；
Step 2, ardealite lime stablized soil life cycle environmental impact inventory calculate
With reference to the classification schemes that Ecological Envionment Research Centre, Chinese Academy of Sciences proposes, ardealite lime stablized soil material is selected
The relative influence factor that the environment of life cycle influences type is as shown in table 1, and each environment influences object of reference such as 2 institute of table of type
Show, the equivalent value of each Environmental Factors is as shown in table 3：
The environment of 1 road surface base layer material of table influences classification chart
| Environment influences type | The relative influence factor |
| Resource consumption (EDP) | Energy consumption |
| Global warming (GWP) | CO2、CO、NOx |
| It is acidified (ODP) | NOx、SO2 |
| Eutrophication (AP) | NOx |
| Ozone layer depletion (NP) | CO2、CO、CxHy、NOx |
| Photochemical ozone synthesizes (POCP) | CxHy |
2 each environment of table influences the object of reference of type
3 each environment of table influences the impact factor equivalent value of type
Since ardealite belongs to discarded industrial residue, its raw material obtain and preparation is related to another industry system
System, therefore do not consider that the environment of the preparation of ardealite and its mining phase of raw material influences；Ardealite lime stablized soil
The Environmental Factors that life cycle each stage of material is related to are as shown in table 4：
4 ardealite lime stablized soil life-cycle processes impact factor of table
The Environmental Factors that each stage is related to specifically include：
(1) raw material obtain the stage：Main includes lime stone, the exploitation of soil and transit link, is related to the consumption (electricity of resource
Power, coal, diesel oil).
(2) binder preparatory phase：The main preparation link including quick lime, calcium hydroxide, is related to the resources such as electric power, coal
Consumption and CO2、CO、CxHy、NOx、SO2Gas discharges and noxious waste pollution.
(3) mixture preparatory phase：Main includes the link of transport and manufacture, be related to electric power, coal resource consumption and
CO2、CO、CxHy、NOx、SO2Gas discharges and noxious waste pollution.
Since all industrial systems nearly all have the links such as fuel exploitation, power generation, transport, road surface base layer material life
These links in the life period are known as the synergic system of material production, and power generation pollutant data are flat by China's power generation energy consumption
Mean value 0.424kg marks coal/kWh, is converted into the calculating of calorific value 24244kJ/kg fire coals；CO2Production quantity is contained by raw coal fixed carbon
Amount 50% calculates；Power generation, transportation system NO2、SO2Production quantity system is calculated according to corresponding average emission factors.All
Raw material is exploited in terms of identical power consumption, does not consider other pollutants.Its specific data is as shown in table 5：
The environment of synergic system influences basic data in 5 ardealite lime stablized soil life cycle of table
The synergic system of links category material production in ardealite lime stablized soil life-cycle processes, it is public
It is as shown in table 6 that each production process environment of system influences basic data：
6 ardealite lime stablized soil life-cycle processes environment of table influences basic data
In order to facilitate calculating, when carrying out the inventory analysis of environmental impact assessment, transport in raw material production process away from
It is calculated from 5km；Transportation range during the transport of materials of mixture production process Central Plains is calculated with 30km；Bavin in transportational process
Oil firing calorific value is calculated with standard diesel oil calorific value 44055KJ/kg；Life Cycle Inventory data are as shown in table 7：
Step 3, ardealite lime stablized soil equivalent environment influence latent value and calculate
The equivalent value of the Different Effects factor in type is influenced according to each environment, convolution (1) will be every a kind of in listings data
The related data of the type Different Effects factor is quantified as the size of same unit and is carried out on each equivalence factor data for influencing type
Summarize.
1. resource consumption：Using standard coal as equivalence factor, the relative size of other substances is calculated according to equivalent coefficient.Often
It is 106.563kg standard coal equivalents that the resource consumption that cubic meter ardealite lime stablized soil material generates, which influences latent value,.Its
It is 98.346kg standard coal equivalents that the environment that middle binder preparatory phase generates, which influences latent value, accounts for 92.29%.Coal resource is main
Resource consuming factor, account for the 93.34% of total amount, concrete outcome is as shown in table 8.
8 resource consumption substance yield characterization results of table
2. global warming：With CO2As equivalence factor, every cubic metre of ardealite lime stablized soil material generates complete
Ball, which warms, influences to dive value for 482.773kg CO2Equivalent.The influence that wherein binder preparatory phase generates is maximum, is
433.374kg CO2Equivalent accounts for 89.77%.Most important impact factor is NOX, it is 254.016kg CO to influence latent value2When
Amount, accounts for 52.62%, is secondly CO2, it is 228.677kg CO to influence latent value2Equivalent accounts for 47.37%, concrete outcome such as 9 institute of table
Show.
3. acidification：With SO2As equivalence factor, the acidification that every cubic metre of ardealite lime stablized soil generates influences to dive
Value is 0.86kg SO2Equivalent.The influence that wherein preparatory phase of cementing material generates is maximum, reaches 0.775kg SO2Equivalent accounts for
90.12%；And NOxIt is 0.66kg SO for main impact factor2Equivalent accounts for 76.74%, and concrete outcome is as shown in table 10.
9 global warming substances yield characterization results of table
10 acidifying substance yield characterization results of table
4. eutrophication：With NOxAs equivalence factor, the influence that every cubic metre of ardealite lime stablized soil generates is latent
Value is 1.223kg NOxEquivalent.The influence that wherein binder preparatory phase generates is maximum, is 1.086kg NOxEquivalent accounts for
88.8%, it is shown in Table 11.
5. ozone layer depletion：Using CFC-11 as equivalence factor, every cubic metre of ardealite lime stablized soil material production
It is 0.042kg CFC-11 equivalents that raw ozone layer depletion, which influences latent value,.The influence that wherein binder preparatory phase generates is maximum,
Up to 0.038kg CFC-11 equivalents, account for 90.48%.CO2It is most important ozone layer depletion impact factor, influencing latent value is
0.023kg CFC-11 equivalents, account for 54.76%, are secondly NOx, and it is 0.019kgCFC-11 equivalents to influence latent value, accounts for 45.24%,
It is shown in Table 12.
11 Eutrophication materials yield characterization results of table
12 ozone-depleting substances yield characterization results of table
6. photochemical ozone synthesizes：With C2H4As equivalence factor, every cubic metre of ardealite lime stablized soil material production
The latent value of raw influence is 1.817 × 10-3kg C2H4Equivalent.The influence that wherein binder and mixture preparatory phase generate is equal,
It is 8.4 × 10-4kg C2H4Equivalent accounts for 46.23%, is shown in Table 13.
13 photochemical ozone synthetic yield characterization results of table
In summary as a result, the characterization results for respectively influencing type are as shown in table 14.
14 life cycle of table respectively influences type feature result
Step 4, ardealite lime stablized soil life-cycle processes influence latent value standardization
Annual social resources quota of expenditure benchmark according to the every environmental element total emission volumn of nineteen ninety China it is calculated I
National standard space equivalent basis, stoichiometric standard use normed space equivalent, since Engineering Projects their location belongs to middle part, so
Selected a reference value, which is Central China area surroundings, herein influences latent value normed space equivalent basis value, specific data such as table 15
It is shown：
15 Central China area surroundings of table influence latent value normed space equivalent basis value
Convolution (2), which calculates each environment of every cubic metre of ardealite lime stablized soil life-cycle processes, to be influenced through mark
Data after standardization are as shown in table 16.
16 environmental impact assessment standardization result of table
Step 5, ardealite lime stablized soil life cycle environmental impact total load calculate
1. life-cycle processes influence latent value weight calculation
(1) hierarchical model is established
In conjunction with above-mentioned analysis and summary, establishing ardealite lime stablized soil environment influences the hierarchical relationship of quantitative target,
It is shown in Table 17：Wherein environmental impact indicators U is made of 6 first class index, i.e. ardealite lime stablized soil environmental impact factor
Integrate as U={ u1, u2, u3, u4, u5, u6, wherein u1, u2, u3, u4, u5, u6Respectively resource consumption, global warming, acidification, Fu Ying
Fosterization, ozone layer depletion and photochemical ozone synthesis.
Each the factor of first class index is determined by n factor in several two-level index again, i.e.,：u1={ u11, u12,
u13, u2={ u21, u22, u23, u3={ u31, u32, u4={ u41, u5={ u51, u52, u53, u54, u6={ u61}。
The hierarchical relationship of 17 ardealite lime stablized soil environmental impact indicators of table
(2) weight is determined
Each Environmental Factors equivalent value EF of two-level indexjiReferring to table 3, each environment of first class index influences the opposite power of type
It determines again with the following method：
1. Judgement Matricies
To each factor of evaluation carry out two-by-two important ratio compared with, obtain Integrated comparative matrix, according to significance level sort index
Construct corresponding judgment matrix.The importance of each first class index factor is judged using the simple magnitude rule as shown in formula (4).
In formula, kijFor the importance quantized value of factor i and factor j.
The calculation formula of judgment matrix is shown in formula (5) (6)
In formula, aijFor the respective element in judgment matrix；riFor significance level sequence index；M is matrix exponent number；kijFor than
Compared with the respective element in matrix.
The weight coefficient for drafting first class index is respectively：Resource consumption WFEDP, global warming WFGWP, it is acidified WFAP, eutrophy
Change WFNP, ozone layer depletion WFODP, photochemical ozone synthesis WFPOCP。
According to the characteristics of present case ardealite lime stablized soil material and middle part situation calculates each first class index
Weight coefficient, process is as follows：The importance of each first class index factor, which is judged, uses formula (4), simultaneously according to the actual conditions of this paper
Determine that importance scale, estimate of situation are shown in Table 18 in conjunction with the factor that middle part stresses：
18 ardealite lime stablized soil environment of table influences type relative importance scale
| Importance | WFEDP | WFGWP | WFAP | WFNP | WFODP | WFPOCP |
| WFEDP | 1 | 2 | 2 | 2 | 2 | 2 |
| WFGWP | 0 | 1 | 2 | 2 | 2 | 2 |
| WFAP | 0 | 0 | 1 | 0 | 2 | 0 |
| WFNP | 0 | 0 | 2 | 1 | 2 | 2 |
| WFODP | 0 | 0 | 0 | 0 | 1 | 0 |
| WFPOCP | 0 | 0 | 2 | 0 | 2 | 1 |
It is as follows that comparator matrix can be obtained according to formula (4)：
Then r is calculated to obtain by formula (6)1=11, r2=9, r3=3, r4=7, r5=1, r6=5.
According to formula (5), following judgment matrix is obtained：
2. calculation optimization matrix
According to judgment matrix A=(aij)m×m, then the respective element in (7) calculation optimization matrix as the following formula, and optimized
Matrix B=(bij)m×m。
Then it is calculated by formula (7)
3. calculating weighted value
The calculating of the weighted value of first class index and normalized are shown in formula (8), formula (9).
In formula,For the single weighted value of i-th of first class index；M is grade index number；wiFor i-th first class index
Normalized weight value.
Therefore it is obtained according to formula (8)W is obtained according to formula (9)1=
0.43,w2=0.26, w3=0.05, w4=0.15, w5=0.03, w6=0.08.
Therefore, the weight coefficient for representing the first class index that each environment influences type is respectively：Resource consumption WFEDP=0.43,
Global warming WFGWP=0.26, it is acidified WFAP=0.05, eutrophication WFNP=0.15, ozone layer depletion WFODP=0.03, it is photochemical
It learns ozone and synthesizes WFPOCP=0.08.
2. life cycle environmental impact total load calculates the determination of overall target
The relative weighting that the latent value of influence after standardization combines varying environment to influence type is weighted according to formula (4), is finally asked
It is as shown in table 19 to obtain the overall target that each environment influences after weighting in every cubic metre of ardealite lime stablized soil life cycle.
19 environmental impact assessment weighted results of table
Step 6, ardealite lime stablized soil life cycle impact assessment
Life cycle impact assessment is by ardealite lime stablized soil life cycle environmental impact number
According to being analyzed, and propose that some advantageously reduce resource consumption, the measure of pollution abatement object discharge.According to above-mentioned data result
It shows, it is 2.599 × 10 that the environment caused by average every cubic metre of ardealite lime stablized soil material, which influences overall target,-3
Normed space equivalent, wherein each stage it is descending to the influence index of environment be followed successively by binder and gather materials preparation (2.396 ×
10-3Normed space equivalent, account for 78.53%), the preparation of mixture (1.427 × 10-4Normed space equivalent, account for 5.49%), it is former
Material obtains (6.023 × 10-52.32%) normed space equivalent, accounts for.It is descending that each environment influences influence of the type to environment
It is followed successively by resource consumption (2.041 × 10-378.53%) normed space equivalent, accounts for；Global warming (3.685 × 10-4Normed space
14.18%) equivalent accounts for；Ozone layer depletion (1.57 × 10-46.04%) normed space equivalent, accounts for；Eutrophication (2.088 ×
10-50.8%) normed space equivalent, accounts for；Acidification (9.083 × 10-60.35%) normed space equivalent, accounts for；Photochemical ozone closes
At (1.615 × 10-60.08%) normed space equivalent, accounts for.Each stage and each environment influence influence size ratio of the type to environment
Example relationship is as shown in Figure 4, Figure 5.
By table 17, Fig. 5 as it can be seen that resource consumption and global warming are ardealite lime stablized soil roadbed materials entirely gives birth to
It orders in the period and large effect type is contributed to carrying capacity of environment.
By table 8 as it can be seen that it is coal consumption to influence the maximum factor to resource consumption, 93.34% is accounted for；And wherein binder gathers materials
The coal consumption that preparatory phase generates is most, 92.29% accounted for about；As shown in Table 7, the coal consumption generated in lime preparation process accounts for about whole
A stage generates the 82.91% of coal consumption.The resource consumption substance of ardealite rendzinas comprehensive stable soil life cycle different phase
Yield characterization results schematic diagram is as shown in Figure 6；
By table 9 as it can be seen that two Main Factors larger to influenced by global warming are NOx and CO2, the wherein influence of NOx is latent
Value accounts for about 52.62%, CO2 and accounts for about 47.37%；Binder and the NOx and CO2 of the preparatory phase release gathered materials are most.Same reason
Table 7 can calculate, and the NOx discharged in lime preparation process accounts for about the 71.22% of the burst size of all stage, and the CO2 of release is about
Account for 79.40%.The global warming substances yield of ardealite rendzinas comprehensive stable soil life cycle different phase characterizes knot
Fruit schematic diagram is as shown in Figure 7.
By above-mentioned analysis it is found that the preparation process of calcium hydroxide is caused by resource consumption and global warming influences maximum,
It is the key link for influencing environment total load value.
Therefore, it is studied by the energy-conserving and emission-cutting technology of key link, improves corresponding link, take appropriate measures, energy
Enough total loads for effectively reducing environment, realize the low-carbon environment-friendly construction mode of highway construction.
(1) optimized mix-proportion and the suitable binder of selection
Since ardealite belongs to trade waste, a large amount of soils can be occupied if not being used.It therefore, can be by using phosphorus
Gypsum replaces part lime Subgrade, and the match ratio by optimizing ardealite lime stabilized soil, is ensureing design and use
The utilization rate that ardealite is improved under the premise of it is required that, can effectively reduce load of the binder preparatory phase to environment.Meanwhile by
Lime industrialization degree height is compared in the production process of cement, to the less pollution of environment, therefore cement can also be used and replace stone
Ash is used as binder, to fundamentally solve load of the binder preparatory phase to environment.
(2) by analyzing it is found that preparatory phase the consumption of coal in binder is larger.Since burning of coal quality is low,
Reach identical calorific value, required quality is 2.04 times of diesel oil, 1.34 times of natural gas.Therefore, if changing lime system
The energy source type of standby process, the energy source type of high pollution maximum discharge is fundamentally replaced using clean energy resource (such as natural gas),
Pressure of the preparatory phase to environment of binder can be greatly reduced.
(3) reinforce construction management
Construction management is the vital ring of highway construction construction.Construction management efficiency is improved, as chosen and rationally mixed
Material, raw material haul distance are closed, reinforcing the tissue cooperation between every construction technology, reasonable disposition construction machinery etc. can effectively control
The carrying capacity of environment of key link reduces the pollution to environment.
The above specific implementation mode is merely illustrative of the technical solution of the present invention, rather than is limited, in embodiment
All parameters are obtained by statistics, although invention is explained in detail for previous embodiment, for this field
Technical staff for, remain able to corresponding same by modifying or carrying out to the technical solution described in previous embodiment
It replaces, and these modifications or substitutions, without departing from the range of claimed technical solution of the invention.
Claims (7)
1. a kind of ardealite base material life cycle environmental impact method for quantitatively evaluating, which is characterized in that include the following steps：
Step 1), ardealite road surface base layer material life cycle phase divide：
Ardealite road surface base layer material life cycle is divided into raw material to obtain, prepared by binder, prepared by mixture, operation dimension
Shield, five stages of waste reconstituted circularly；
Step 2), ardealite road surface base layer material life cycle environmental impact inventory calculate：
Determine that ardealite road surface base layer material environment influences type, the environment based on synergic system influences basic data and calculates phosphorus stone
Cream road surface base layer material influences the environment under type in life cycle different phase and varying environment influences listings data；
Step 3), ardealite road surface base layer material equivalent environment influence latent value and calculate：
The Different Effects factor under type, which is influenced, according to each environment of ardealite road surface base layer material life cycle compares varying environment shadow
The equivalent value for ringing type object of reference, the environmental influence value of the Different Effects factor, which is scaled each environment, influences working as type object of reference
Factor data is measured, i.e. environment influences latent value；Reduction formula presses formula (1)：
EP (j)=∑ EP (j)=∑ [Qi×EF(j)i] (1)
In formula, EP (j) is the latent value of influence that jth kind environment influences type；EP(j)iClass is influenced on jth kind for i-th kind of impact factor
The latent value of the influence of type；QiFor the discharge capacity of i-th kind of impact factor；EF(j)iType is influenced on jth kind for i-th kind of impact factor
Equivalent value；
Step 4), ardealite road surface base layer material life-cycle processes influence latent value standardization：
Selection environment influences latent value equivalent basis value, and each environment of ardealite road surface base layer material life-cycle processes is influenced type
The latent value standardization of influence, obtain the overall target that each environment influences in ardealite road surface base layer material life cycle, standardization
Calculation formula presses formula (2) used by the environment of road surface base layer material influences latent value standardization afterwards：
In formula, NP (j) is the latent value of influence of jth kind environment influence type after standardization；EP (j), which is jth kind environment, influences type
The latent value of influence；T is the service of goods period；ER (j) is annual social resources quota of expenditure a reference value；
Step 5), ardealite road surface base layer material life cycle environmental impact total load calculate：
Latent value is influenced based on the environment after ardealite road surface base layer material whole life cycle internal standardization, is influenced in conjunction with each environment
The weighted value of type is weighted, and calculates total load value of the life cycle different phase to environmental system, and calculation formula presses formula
(3)：
EIL=∑ WP (j)=∑ [WF (j) × NP (j)] (3)
In formula, EIL, which is environment, influences load；WP (j) is the latent value of influence of jth kind environment influence type after weighting；WF (j) is the
J kind environment influences the weighted value of type；NP (j) is the latent value of influence of jth kind environment influence type after standardization；
Step 6), ardealite road surface base layer material life cycle impact assessment：
By comparative analysis ardealite road surface base layer material the ring under type is influenced in life cycle different phase and varying environment
Border influences total load value proportion, and proportion is bigger, influences more serious.
2. a kind of ardealite base material life cycle environmental impact method for quantitatively evaluating according to claim 1, special
Sign is, in step 3), the equivalent value of the Different Effects factor in type is influenced according to each environment, convolution (1) is by listings data
In each type Different Effects factor related data be quantified as same unit size and on it is each influence type equivalence factor
Data are summarized.
3. a kind of ardealite base material life cycle environmental impact method for quantitatively evaluating according to claim 1, special
Sign is, in step 4), the calculating for annual social resources quota of expenditure benchmark, using normed space equivalent.
4. a kind of ardealite base material life cycle environmental impact method for quantitatively evaluating according to claim 1, special
Sign is, in step 5), the weighted value of varying environment type is calculated using improved H IAHP.
5. a kind of ardealite base material life cycle environmental impact method for quantitatively evaluating according to claim 1 or 4,
It is characterized in that, step 5) ardealite road surface base layer material life cycle environmental impact total load calculates：
1), life-cycle processes influence latent value weight calculation：
Establishing ardealite lime stablized soil environment influences the hierarchical relationship of quantitative target；
To each factor of evaluation carry out two-by-two important ratio compared with, obtain Integrated comparative matrix, according to significance level sort index construction
Corresponding judgment matrix；
The calculation formula of judgment matrix is shown in formula (5) (6)
In formula, aijFor the respective element in judgment matrix；riFor significance level sequence index；M is matrix exponent number；kijTo compare square
Respective element in battle array；
According to judgment matrix A=(aij)m×m, then the respective element in (7) calculation optimization matrix as the following formula, and obtain optimization matrix B
=(bij)m×m；
Then it is calculated by formula (7)
Calculate weighted value：
The calculating of the weighted value of first class index and normalized, obtaining each environment influences the weight system of first class index of type
Number, is shown in formula (8), formula (9)；
In formula,For the single weighted value of i-th of first class index；M is grade index number；wiFor the normalizing of i-th of first class index
Change weighted value；
The relative weighting that the latent value of influence after standardization combines varying environment to influence type is weighted according to formula (4),
In formula, kijFor the importance quantized value of factor i and factor j；
Finally acquiring each environment in unit ardealite lime stablized soil life cycle influences the comprehensive index value after weighting.
6. a kind of ardealite base material life cycle environmental impact method for quantitatively evaluating according to claim 5, special
Sign is that wherein environmental impact indicators U is made of 6 first class index, i.e. ardealite lime stablized soil environmental impact factor
Integrate as U={ u1, u2, u3, u4, u5, u6, wherein u1, u2, u3, u4, u5, u6Respectively resource consumption, global warming, acidification, Fu Ying
Fosterization, ozone layer depletion and photochemical ozone synthesis；
Each the factor of first class index is determined by n factor in several two-level index again, i.e.,：u1={ u11, u12, u13, u2
={ u21, u22, u23, u3={ u31, u32, u4={ u41, u5={ u51, u52, u53, u54, u6={ u61}。
7. a kind of ardealite base material life cycle environmental impact method for quantitatively evaluating according to claim 1, special
Sign is, in step 6), influences type to the environment caused by ardealite lime stablized soil material by obtaining each environment
It influences equivalent value shared by overall target and carries out size sequence, you can complete the quantization of ardealite base material life cycle environmental impact
Evaluation.
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| CN109440560A (en) * | 2018-10-24 | 2019-03-08 | 渭南渭业环保科技有限公司 | A kind of ardealite lime stablized soil |
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| CN110807568A (en) * | 2019-09-12 | 2020-02-18 | 北京矿冶科技集团有限公司 | Method for evaluating life cycle environmental influence of beneficiation reagent |
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| CN110489720A (en) * | 2019-07-31 | 2019-11-22 | 武汉科技大学 | A kind of solid-rocket bay section LCA ecological environment index quantization method based on moulding process |
| CN110807568A (en) * | 2019-09-12 | 2020-02-18 | 北京矿冶科技集团有限公司 | Method for evaluating life cycle environmental influence of beneficiation reagent |
| CN111768088A (en) * | 2020-06-15 | 2020-10-13 | 中国建材检验认证集团股份有限公司 | Waste resource utilization value quantitative evaluation model, method and device |
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