CN111784107A - City lifeline risk assessment method and device - Google Patents
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Abstract
The embodiment of the invention provides a method and a device for urban lifeline risk assessment, wherein the method for urban lifeline risk assessment comprises the steps of obtaining initial risk information in an area to be assessed, wherein the initial risk information comprises a plurality of disaster types and initial risk characteristics corresponding to the disaster types; determining coupling risk information between a plurality of disaster categories based on the initial risk information; determining comprehensive risk information in the area to be evaluated based on the initial risk information and the coupling risk information; and determining final comprehensive risk information in the area to be evaluated based on the comprehensive risk information and the disaster coping capability information. According to the city lifeline risk assessment method provided by the embodiment of the invention, the disaster type and the coupling disaster type associated with the disaster type are integrated to carry out risk assessment on the city lifeline, so that the assessment range is expanded, the objective reality is better met, and the assessment accuracy is improved.
Description
Technical Field
The invention relates to the technical field of urban safety risk level assessment, in particular to an urban lifeline risk assessment method and device.
Background
The city life line is a network-shaped public project which ensures the production and life of urban residents and maintains the basic functions of the city, and mainly comprises systems of electric power, gas, water supply and drainage, heating power, transportation, communication and the like. With the improvement of the modernization degree and the enlargement of the urban scale, the dependence degree of the city on the lifeline system is higher and higher, the safety of the lifeline system directly influences the normal operation of the city function, and the importance of the safety of the urban lifeline system is prominent day by day.
At present, most of risk assessment of city life lines is based on single disaster types, and the relation among different disaster types is not considered, so that the assessment result is incomplete and inaccurate.
Disclosure of Invention
Embodiments of the present invention provide a city lifeline risk assessment method, apparatus, electronic device, and readable storage medium that overcome or at least partially address the above-mentioned problems.
In a first aspect, an embodiment of the present invention provides a city lifeline risk assessment method, including: acquiring initial risk information in an area to be evaluated, wherein the initial risk information comprises a plurality of disaster types and initial risk characteristics corresponding to the disaster types; determining coupling risk information between a plurality of disaster categories based on the initial risk information; determining comprehensive risk information in the area to be evaluated based on the initial risk information and the coupling risk information; and determining final comprehensive risk information in the area to be evaluated based on the comprehensive risk information and the disaster coping capability information.
In some embodiments, the initial risk information includes a plurality of disaster categories and initial risk characteristics corresponding to the disaster categories, and the determining coupled risk information between the plurality of disaster categories based on the initial risk information includes: acquiring a plurality of coupled disaster types corresponding to the respective disaster types based on the plurality of disaster types; determining coupling risk characteristics of each corresponding coupling disaster type based on each initial risk information; and acquiring the coupling risk information based on the coupling disaster type and the coupling risk characteristics.
In some embodiments, the determining, based on the initial risk information and the coupling risk information, integrated risk information within the area to be assessed includes: acquiring a coupling coefficient corresponding to each coupling disaster type based on the initial risk characteristics of the disaster type corresponding to each coupling disaster type; determining the integrated risk information based on the initial risk information, the coupling risk information, and the coupling coefficient.
In some embodiments, said determining said composite risk information based on said initial risk information, said coupling risk information and said coupling coefficient comprises: using formulas
Determining the comprehensive risk information; wherein D is the comprehensive risk information, DiThe initial risk characteristics corresponding to the initial risk information of the ith disaster type, m is the total number of disaster types, DijFor a coupled risk profile corresponding to a jth coupled disaster category corresponding to the ith disaster category,ijand n is the total number of the coupled disaster types corresponding to the ith disaster type.
In some embodiments, the obtaining initial risk information in the area to be evaluated includes: determining the vulnerability of the disaster-bearing carrier based on the vulnerability factor of the disaster-bearing carrier in the area to be evaluated and the vulnerability factor weight corresponding to the vulnerability factor; acquiring initial risk information based on the initial risk index and the vulnerability of the disaster type; the disaster carrier is a main body influenced by the disaster type, and the vulnerability factor is a factor of the disaster carrier influenced by the disaster type.
In some embodiments, said obtaining said initial risk information based on said initial risk index and said vulnerability of said disaster category comprises, before: and determining the initial risk index based on the evaluation index of the disaster type and the evaluation index weight corresponding to the evaluation index.
In some embodiments, the determining final integrated risk information in the area to be evaluated based on the integrated risk information and disaster response capability information includes: determining the disaster coping capability information based on the emergency capability and the response time of the emergency treatment; and acquiring the final comprehensive risk information based on the comprehensive risk information and the disaster coping capability information.
In a second aspect, an embodiment of the present invention provides an urban lifeline risk assessment apparatus, including: the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring initial risk information in an area to be evaluated, and the initial risk information comprises a plurality of disaster types and initial risk characteristics corresponding to the disaster types; a determining unit, configured to determine coupling risk information between multiple disaster categories based on the initial risk information; the comprehensive unit is used for determining comprehensive risk information in the area to be evaluated based on the initial risk information and the coupling risk information; and the correcting unit is used for determining final comprehensive risk information in the area to be evaluated based on the comprehensive risk information and the disaster coping capability information.
In a third aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method provided in the first aspect when executing the program.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the method as provided in the first aspect.
According to the city lifeline risk assessment method and device, the electronic equipment and the readable storage medium, the disaster type and the coupling disaster type associated with the disaster type are integrated to carry out risk assessment on the city lifeline, the assessment range is expanded, objective reality is better met, and the assessment accuracy is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flow chart of a city lifeline risk assessment method according to an embodiment of the present invention;
FIG. 2 is a flow chart of another city lifeline risk assessment method according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an urban lifeline risk assessment device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device for city lifeline risk assessment according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The city lifeline risk assessment method according to the embodiment of the invention is described below with reference to fig. 1 and 2.
As shown in fig. 1, the city lifeline risk assessment method of the embodiment of the present invention includes steps S100-S400.
Step S100, obtaining initial risk information in an area to be evaluated, wherein the initial risk information comprises a plurality of disaster types and initial risk characteristics corresponding to the disaster types.
It can be understood that the city lifeline risk assessment method of the embodiment of the invention is an urban lifeline multi-disaster coupling comprehensive risk assessment method, and the method assesses the comprehensive risk of the city lifeline facing various disasters.
In the method for assessing the risk of the urban lifeline, the types of the urban lifeline disasters comprise urban outside disasters and urban inside disasters.
The urban lifeline external disasters comprise natural disasters and hazardous chemical substance accidents, the natural disasters comprise disasters such as earthquake, ground settlement, landslide, rainfall, snowfall, strong wind and the like, and the hazardous chemical substance accidents comprise hazardous chemical substance fire explosion and toxic and harmful gas leakage.
The urban lifeline internal disaster not only considers the damage relation evaluation of each subsystem of the urban lifeline under different disaster causing modes, but also considers the supply relation evaluation among the subsystems, and comprises disasters such as gas subsystem interruption, heating subsystem interruption, water supply subsystem interruption, power subsystem interruption, communication subsystem interruption, drainage subsystem interruption, traffic subsystem interruption and the like.
For example, for the interruption of a drainage subsystem of a city life line, the interruption of a gas subsystem, the interruption of a heat supply subsystem, the interruption of a water supply subsystem, the interruption of an electric subsystem, the interruption of a communication subsystem, the interruption of a traffic subsystem, the interruption of a hazardous chemical fire and the leakage of toxic and harmful gases may be caused, but only the destructive relation among disaster types exists between the drainage subsystem and the gas subsystem, the heat supply subsystem, the water supply subsystem, the electric subsystem, the communication subsystem and the traffic subsystem, and the functional supply relation does not exist.
For the interruption of the electric power subsystem of the city lifeline, the interruption of the heat supply subsystem, the water supply subsystem, the communication subsystem and the traffic subsystem which have the functional supply relationship with the electric power subsystem can be influenced, so that the interruption of the heat supply subsystem, the interruption of the water supply subsystem, the interruption of the communication subsystem and the interruption of the traffic subsystem are caused.
For each disaster type, an initial risk characteristic corresponds to the disaster type, the initial risk characteristic is comprehensively determined based on factors such as the evaluation index of the disaster type and the vulnerability of a disaster bearing carrier in the area to be evaluated, and the initial risk characteristic is used for representing the influence of the disaster type on life line personnel and buildings in the area to be evaluated.
The division of the region to be evaluated in the embodiment of the present invention is not specifically limited, and the region to be evaluated is divided by a range within 3km around the large-scale moving region in the embodiment of the present invention.
Step S200, coupling risk information among a plurality of disaster types is determined based on the initial risk information.
It can be understood that, for the urban lifeline system with a complex structure, one system comprises a plurality of subsystems, the subsystems are not independent, and a complex coupling relationship exists between the subsystems, which causes immeasurable loss, and the influence range is very wide.
Therefore, when risk assessment is performed on the city lifeline, the influence of a single disaster type on the city lifeline cannot be considered, and the comprehensive influence of the disaster type possibly coupled with other disaster types on the city lifeline is also considered.
The embodiment of the invention refers to the disaster types which have coupling relation with one disaster type as coupling disaster types, and can summarize each disaster type and the coupling disaster type corresponding to the same by collecting a large number of city life line accident cases in multiple aspects and combing the case coupling relation.
The initial risk information of each disaster type comprises the disaster type and initial risk characteristics corresponding to the disaster type, and the initial risk characteristics are used for describing the influence of the disaster type on the life line of the city.
Each disaster type has one or more coupling disaster types corresponding to the disaster type, and the coupling disaster type and the initial risk characteristics corresponding to the coupling disaster type form coupling risk information.
And S300, determining comprehensive risk information in the area to be evaluated based on the initial risk information and the coupling risk information.
It can be understood that the magnitude of the influence of the coupling disaster type on the city lifeline is directly proportional to the degree of closeness of the coupling relationship between the coupling disaster type and the disaster type, and the closer the coupling relationship between the coupling disaster type and the disaster type is, the greater the influence of the coupling disaster type on the city lifeline is.
Based on the initial risk characteristics of the coupling disaster types and the closeness of the coupling relationship between the coupling disaster types and the disaster types, the coupling risk information can be determined. Based on the initial risk information of the disaster type and the coupling risk information of the coupling disaster type, comprehensive risk information in the area to be evaluated can be determined.
And S400, determining final comprehensive risk information in the area to be evaluated based on the comprehensive risk information and the disaster coping capability information.
It can be understood that, as people attach importance to the degree of safety, the urban disaster response capability is continuously enhanced, and the risk assessment is unobtrusive only according to the comprehensive risk information of disaster types. According to the embodiment of the invention, the comprehensive risk information is corrected according to the disaster coping capability information, so that the final comprehensive risk information in the area to be evaluated is obtained, and the final comprehensive risk information is used for more comprehensively and objectively carrying out risk evaluation on the city life line.
After the final comprehensive risk information in the area to be evaluated is obtained, the final comprehensive risk information is subjected to grade division, so that the danger grade of each disaster-bearing carrier in the area to be evaluated can be obtained, and the specific situation is shown in table 1.
TABLE 1 Risk ratings criteria
| Risk rating | D*c |
| Extremely low risk | 0≤D*c＜50 |
| Low risk | 50≤D*c＜100 |
| Middle risk | 100≤D*c＜150 |
| High risk | 150≤D*c＜200 |
| Very high risk | 200≤D*c＜250 |
wherein ,D*cThe final comprehensive risk information of the disaster-bearing carrier.
The part with high risk grade in the disaster-bearing carrier needs to be more emphasized.
See table 2 for the risk level of the area to be assessed.
TABLE 2 rating Scale for regions to be evaluated
| Risk rating | D*qy |
| Extremely low risk | 0≤D*qy＜500 |
| Low risk | 500≤D*qy＜1000 |
| Middle risk | 1000≤D*qy＜1500 |
| High risk | 1500≤D*qy＜2000 |
| Very high risk | 2000≤D*qy＜2500 |
wherein ,D*qyAnd finally integrating the risk information of the area to be evaluated.
According to the city lifeline risk assessment method provided by the embodiment of the invention, the disaster type and the coupling disaster type associated with the disaster type are integrated to carry out risk assessment on the city lifeline, so that the assessment range is expanded, the objective reality is better met, and the assessment accuracy is improved.
In some embodiments, step S200 includes steps S210-S230.
Step S210 is to acquire a plurality of coupled disaster types corresponding to respective disaster types based on the plurality of disaster types. The disaster type coupling relationship summary table is shown in table 3.
Table 3 summary table of disaster type coupling relationship
A large number of case analyses show that the disaster types do not exist independently, and complex coupling relations exist between the disaster types.
In the embodiment of the present invention, the destructive relationship and the functional supply relationship of disaster types among the subsystems of the city lifeline are comprehensively considered, and for the convenience of distinction, the influence of the destructive relationship of disaster types of the subsystems of the city lifeline is represented by 1, and the influence of the functional supply relationship of disaster types of the subsystems of the city lifeline is represented by 2 in table 3.
For example, for the interruption of a drainage subsystem of a city life line, the interruption of a gas subsystem, the interruption of a heat supply subsystem, the interruption of a water supply subsystem, the interruption of an electric subsystem, the interruption of a communication subsystem, the interruption of a traffic subsystem, the interruption of a hazardous chemical fire and the leakage of toxic and harmful gases may be caused, but only the destructive relation among disaster types exists between the drainage subsystem and the gas subsystem, the heat supply subsystem, the water supply subsystem, the electric subsystem, the communication subsystem and the traffic subsystem, and the functional supply relation does not exist.
For the interruption of the electric power subsystem of the city lifeline, the interruption of the heat supply subsystem, the water supply subsystem, the communication subsystem and the traffic subsystem which have the functional supply relationship with the electric power subsystem may be influenced, so that the interruption of the heat supply subsystem, the interruption of the water supply subsystem, the interruption of the communication subsystem and the interruption of the traffic subsystem are caused.
Step S220, based on each initial risk information, determining the coupling risk characteristics of each corresponding coupling disaster type.
It is understood that each disaster category may have one or more coupled disaster categories corresponding thereto, and it is also understood that each disaster category may have coupled disaster categories corresponding to other disaster categories. The initial risk profile of one disaster category and the coupled risk profile of the coupled disaster category as the other disaster category are numerically equal.
And step S230, acquiring coupling risk information based on the coupling disaster type and the coupling risk characteristics.
It is understood that the coupled risk information includes a coupled disaster type and a coupled risk characteristic corresponding to the coupled disaster type, and then the coupled risk information can be obtained based on the coupled disaster type and the coupled risk characteristic.
According to the city lifeline risk assessment method provided by the embodiment of the invention, the disaster type and the coupling disaster type associated with the disaster type are integrated to carry out risk assessment on the city lifeline, so that the assessment range is expanded, the objective reality is better met, and the assessment accuracy is improved.
In some embodiments, step S300 includes steps S310-S320.
Step S310, acquiring a coupling coefficient corresponding to each coupling disaster type based on the initial risk characteristics of the disaster type corresponding to each coupling disaster type.
As shown in fig. 3, the city lifeline risk assessment method according to the embodiment of the present invention determines a coupling coefficient in each relationship detailed rule table based on each initial risk feature, where the coupling coefficient is expressed. The detailed tables of the relationships are shown in tables 4 to 17.
The earthquake has a wide influence range, is easy to cause ground settlement and landslide, and can also cause damage to lifeline systems including a gas subsystem, an electric subsystem, a communication subsystem, a heating subsystem, a drainage subsystem, a water supply subsystem and a traffic subsystem. The seismic coupling relationship details are shown in table 4.
TABLE 4 detailed rules of seismic coupling relationship
The ground subsidence generally can not lead to the natural earthquake, but a large number of accident cases show that the construction conditions such as mining or underground water mining improper exist in some areas, small artificial earthquakes are generated due to the ground subsidence and are generally less than 4 grades, therefore, if the conditions exist, 0 or 0.2 is selected as a default, when the earthquake grade is equal to 2 grades or less than 2 grades, 0 is selected, and when the earthquake grade is greater than 2 grades and less than 4 grades, 0.2 is selected.
The ground settlement mainly affects the pipe networks of a gas subsystem, an electric subsystem, a communication subsystem, a heating subsystem, a water supply subsystem and a drainage subsystem, and the current ground settlement condition of the city, the annual average settlement amount and the pipeline burial depth can be obtained according to geological bureau data. The ground settlement coupling relationship is detailed in table 5.
TABLE 5 ground settlement coupling relation detailed rule table
If the lifeline systems such as the gas subsystem, the electric power subsystem, the communication subsystem, the heating power subsystem, the water discharge subsystem, the water supply subsystem and the traffic subsystem are in the influence range of landslide, the influence of landslide on the landslide needs to be considered. The detailed relationship of the mountain landslide coupling is shown in Table 6.
TABLE 6 mountain landslide coupling relationship detailed rule table
The landslide influence range can be obtained by related departments or calculated according to an empirical formula proposed by a Japanese scholarer, and the calculation formula is as follows:
wherein H is the vertical sliding height of the crumbs; l is a horizontal sliding distance; alpha is the gradient of the debris mass originating region.
A number of examples show that strong winds mainly affect the overhead cables. The embodiment of the invention makes a coupling rule according to the wind level standard of the strong wind of the meteorological bureau, and the detailed coupling relation of the strong wind is shown in the table 7.
TABLE 7 detailed rule table of coupling relationship of strong wind
A large number of examples show that snowfall weather mainly influences non-buried cables and road traffic of traffic subsystems, coupling rules are formulated by referring to a snowfall grade standard of a weather bureau in the embodiment of the invention, and the detailed snowfall relation is shown in a table 8.
TABLE 8 Fine rule table of snowfall coupling relation
Rainfall may cause landslide, and seriously affects city lifeline systems (a gas subsystem, an electric subsystem, a communication subsystem, a thermal subsystem, a drainage subsystem, a water supply subsystem and a traffic subsystem). in the embodiment of the invention, coupling rules are formulated by referring to rainstorm grade standards of a weather bureau, and the rainfall coupling relationship is detailed as shown in table 9.
TABLE 9 rainfall coupling relationship detailed rule table
According to the reference, the most common problem in gas subsystems is mainly a series of explosion accidents caused by gas leakage. Considering first its leakage range, there is a possibility of explosion when gas leaking from a gas pipeline diffuses through soil to surrounding communication pipelines (buried cable pipelines, buried communication pipelines, and drainage pipelines). Research has shown that the maximum diffusion range after gas line leakage can reach 12.5m, and the minimum range is also 2.5m, i.e. all communication lines in the range of less than 12.5m have explosion risks. Assuming that the gas diffusion probability in the range of 2.5m-12.5m and the shortest distance between the gas pipeline and the communication pipeline are in a linear relationship, the probability P of the gas diffusing to the communication pipelineDThe calculation formula of (a) is as follows:
wherein ,dcThe shortest distance between the gas line and the communication line if no communication line exists in the leakage range (i.e. d)cLess than or equal to 12.5m), 0 is selected.
If the connected pipeline exists, the gas leakage coupling relation is divided according to the leakage probability, and the detailed gas leakage coupling relation is shown in the table 10.
TABLE 10 gas leakage coupling relationship detailed rule table
A large number of cases show that interruption of the power subsystem mainly affects other subsystems in the lifeline system including the gas subsystem, the heating subsystem, the water supply subsystem, the communication subsystem and the traffic subsystem, and mainly shows functional influence. In the embodiment of the present invention, the outage influence range is used as the standard for disaster coupling, and the outage influence coupling relationship is detailed in table 11.
TABLE 11 detailed rule table of coupling relationship of power-off influence
The communication subsystem is similar to the power subsystem in condition, the interruption of the communication subsystem mainly affects other subsystems in the lifeline system including the gas subsystem, the heating subsystem, the water supply subsystem, the power subsystem and the traffic subsystem, and is mainly embodied in functional influence, and the detailed coupling relationship of the interruption of communication is shown in table 12.
TABLE 12 detailed table of communication interruption coupling relation
The case shows that the water supply subsystem mainly causes the heating subsystem to supply water in a non-timely manner, the heating subsystem is interrupted, and the coupling relation is influenced by water cut-off as shown in table 13.
Table 13 detailed rule table of coupling relation of water supply influence
As the drainage system mainly contains domestic wastewater and a large amount of methane, the methane can explode when meeting fire sources when reaching a certain concentration in a closed space, and can damage other subsystems and hazardous chemical enterprises in a lifeline system, the damage is mainly caused by the overpressure effect of explosion shock waves, and the damage degree of buildings (structures) on the ground is different within different overpressure damage radiuses. For example when the overpressure damage radius is smaller than
At meter hour (overpressure greater than 0.1MPa), (S)0To communicate the cross-sectional area of the pipeline), which can cause damage to other buildings (except earthquake-resistant reinforced concrete); when the overpressure damage radius is
When the pressure is about 0.06MPa-0.07MPa, the steel skeleton light steel-concrete building is damaged; when the overpressure damage radius is
When the building is in a meter state (the overpressure is about 0.02MPa-0.03MPa), the urban large building is obviously damaged; when overpressure damage radius is in
When the pressure is within the range of rice (the overpressure is about 0.01MPa-0.02MPa), the urban large building part can be damaged; when the overpressure damage radius is larger than or equal to
The rice is a safer distance. Therefore, the coupling relationship of the drainage subsystem is detailed in table 14.
Table 14 detailed rule table of coupling relation of drainage subsystem
Note: the gas subsystem, the electric subsystem, the heating subsystem, the communication subsystem and the water supply subsystem are all arranged in underground and overground parts, the overground parts can be used as buildings (structures) and are influenced by overpressure, and the underground parts are mainly influenced by ground vibration caused by explosion. The literature shows that when the ground vibration speed is less than or equal to 3cm/s, the underground pipeline cannot be damaged. Therefore, by using the empirical formula of the Sadawski vibration velocity, the corresponding damage radius can be obtained
I.e. with the drain line as the center and the distance between the two sides being less than
Beyond the range beyond which only overpressure pairs are considered, the underground pipeline, if present, will be damagedDestruction of above ground pipelines.
Research has shown that the thermal subsystem mainly affects the traffic subsystem. The leakage of the heat distribution pipeline can wash the land to form an underground cavity, the road can be collapsed to a certain degree, and the hot water can scald pedestrians on the road. In the embodiment of the present invention, the buried depth of the thermal pipeline is considered, and the detailed coupling relationship of the thermal subsystem is shown in table 15.
TABLE 15 detailed rules table of thermodynamic subsystem coupling relationship
A large number of accident cases show that dangerous chemical fire explosion can cause artificial earthquakes, landslide, damage to an overground gas subsystem, an electric subsystem, a communication subsystem, a thermal subsystem, a drainage subsystem, a water supply subsystem and a traffic subsystem, and if a toxic and harmful gas storage tank exists in the area, toxic and harmful gas leakage is likely to be caused. The detailed relationship of the coupling of the hazardous chemical substance fire and explosion is shown in table 16.
TABLE 16 detailed rules table of coupling relationship between dangerous chemical substance and fire explosion
In the reference, the impact wave influence range is divided, the coupling relation between the dangerous chemical substance fire explosion and other disaster species is considered, and the fire explosion consequence of dangerous chemical substance enterprises in practical cases is considered to be serious, so that the minimum value is 0.2.
The toxic and harmful gas leakage in the embodiment of the invention refers to chemicals which are toxic to human bodies, and if the chemicals are subjected to fire explosion in case of fire, the chemicals are included in hazardous chemical fire explosion, so that the toxic and harmful gas leakage is not considered to influence other subsystems.
The traffic subsystem has no influence on other subsystems.
The summary table of disaster category coupling relationship rules is shown in table 17:
table 17 coupled disaster risk summary table
| Coupling disaster risks | δ |
| Is very high | 1 |
| Height of | 0.8 |
| In | 0.5 |
| Is low in | 0.2 |
| Is very low | 0 |
And S320, determining comprehensive risk information based on the initial risk information, the coupling risk information and the coupling coefficient.
It can be understood that, based on the coupling risk information and the coupling coefficient, the influence of the coupling disaster type on the life line of the city can be obtained. The initial risk information is the influence of the disaster type on the city lifeline, and then the influence of the disaster type on the city lifeline and the influence of the coupling disaster type on the city lifeline are integrated based on the initial risk information, the coupling risk information and the coupling coefficient to determine the comprehensive influence of the disaster type on the city lifeline.
According to the city lifeline risk assessment method provided by the embodiment of the invention, the disaster type and the coupling disaster type associated with the disaster type are integrated to carry out risk assessment on the city lifeline, so that the assessment range is expanded, the objective reality is better met, and the assessment accuracy is improved.
In some embodiments, the calculation formula of the integrated risk information is:
wherein D is the comprehensive risk information, DiThe initial risk characteristics corresponding to the initial risk information of the ith disaster type, m is the total number of disaster types, DijFor a coupled risk profile corresponding to a jth coupled disaster category corresponding to the ith disaster category,ijand n is the total number of the coupled disaster types corresponding to the ith disaster type.
The urban lifeline risk assessment method provided by the embodiment of the invention starts from the triggering relationship among disaster types, considers the function supply relationship among the urban lifelines in combination with the actual situation, obtains the coupling mechanism among the disaster types, and improves the accuracy of assessment.
In some embodiments, step S100 includes steps S110-S130.
Step S110, determining the vulnerability of the disaster-bearing carrier based on the vulnerability factor of the disaster-bearing carrier in the area to be evaluated and the vulnerability factor weight corresponding to the vulnerability factor.
It can be understood that the disaster carrier is a main body affected by the disaster type, the vulnerability factor is a factor of the disaster carrier affected by the disaster type, and the vulnerability is a degree of the disaster carrier affected by the disaster type.
The vulnerability is the degree that the disaster-bearing carrier is possibly damaged due to the influence of the disaster, and in order to avoid wasting manpower and material resources, when the action relation of the disaster-bearing carrier is analyzed according to the disaster type, if the disaster-bearing carrier does not exist in the influence range of the consequence of the disaster type, the vulnerability of the disaster type to the disaster-bearing carrier does not need to be considered.
Before determining the vulnerability of the disaster carrier, the influence range of each disaster type on the disaster carrier in the area to be evaluated is determined.
Due to the fact that the influence range of disaster types such as earthquakes, rains, snowfalls, strong winds and the like is large, the embodiment of the invention considers that the whole area to be evaluated is within the influence range of the disaster types.
The influence of disaster types such as ground settlement, landslide, gas subsystem interruption (gas explosion), power subsystem interruption, communication subsystem interruption, water supply subsystem interruption, heating subsystem interruption, drainage subsystem interruption (methane explosion), traffic subsystem interruption (road damage), hazardous chemical fire explosion, toxic and harmful gas leakage and the like on the disaster-bearing carrier is limited, namely the influence of the disaster types on the disaster-bearing carrier can be not considered when the minimum influence range is exceeded.
The influence range of each disaster type on the disaster carrier is shown in table 18.
TABLE 18 influence Range Table of disaster Carrier for each disaster type
Note that:
1. the ground subsidence settlement area can refer to the urban geological bureau data.
2. The landslide influence range can be obtained by related departments or calculated according to an empirical formula proposed by a Japanese scholarer, and the calculation formula is as follows:
wherein H is the vertical sliding height of the crumbs; l is a horizontal sliding distance; alpha is the gradient of the debris mass originating region.
3. In Table 18, vibrationRadius of damage
Damage radius of fragment
wherein ,S1To communicate the cross-sectional area of the pipe covering, S0To communicate the cross-sectional area of the pipeline, the damage radius of the broken piece is simplified to
wherein ,h0To communicate the pipe diameter, h1For communicating the pipeline top burial depth. Overpressure and fragments can damage people, calculation is carried out according to serious consequences, the maximum value of the overpressure and fragments is used as the damage radius of explosion of a drainage pipeline to people, and R is definedr,i＝max(Rm,i,Rf), wherein ,Rm,iRadius of injury to personnel for overpressure, RfRadius of fragment damage, Rb,iIs the damage radius of overpressure on the building.
TABLE 19 table of injury scope of person due to explosion overpressure of communication pipeline
Table 20 table for the damage range of explosion overpressure of communication pipeline to building
4. Regarding the problem of toxic and harmful gas leakage, the toxic diffusion range of hazardous chemicals considers the most stored toxic hazardous chemicals in the unit, and the calculation formula of the diffusion range is as follows:
wherein R is the toxic gas diffusion radius, and the unit is m; vg is toxic medium vapor volume in m3(ii) a C is toxicAnd (3) taking the dangerous concentration value of the medium in the air, and taking the percentage of lethal concentration 5-10 min after the medium is inhaled by a person.
TABLE 21 summary of the diffusion results of common poisonous and harmful gases
| Substance(s) | Critical amount (t) | Extent of toxic diffusion damage |
| Ammonia (NH)3) | 10 | RDeath by death＝61.62m；RHeavy load＝118.67m；RLight and lightweight＝280.52m |
| Oxygen difluoride (OF)2) | 1 | RDeath by death＝55.69m；RHeavy load＝64.62m；RLight and lightweight＝92.25m |
| Nitrogen dioxide (NO)2) | 1 | RDeath by death＝15.44m；RHeavy load＝17.91m；RLight and lightweight＝25.57m |
| Sulfur dioxide (SO)2) | 20 | RDeath by death＝76.25m；RHeavy load＝121.04m；RLight and lightweight＝206.98m |
| Fluorine gas (F)2) | 1 | RDeath by death＝104.25m；RHeavy load＝384.07m；RLight and lightweight＝656.76m |
| Phosgene (COCl)2) | 0.3 | RDeath by death＝24.78m；RHeavy load＝51.54m；RLight and lightweight＝76.15m |
| Ethylene oxide (C)2H4O) | 10 | RDeath by death＝130.04m；RHeavy load＝176.49m；RLight and lightweight＝380.23m |
| Formaldehyde (CH)2O) | 5 | RDeath by death＝242.02m；RHeavy load＝891.64m；RLight and lightweight＝947.12m |
| Phosphine (PH)3) | 1 | RDeath by death＝31.22m；RHeavy load＝53.66m；RLight and lightweight＝206.17m |
| Hydrogen sulfide (H)2S) | 5 | RDeath by death＝64.31m；RHeavy load＝70.45m；RLight and lightweight＝96.02m |
| Hydrogen chloride (HCl) | 20 | RDeath by death＝866.31m；RHeavy load＝933.20m；RLight and lightweight＝2082.39m |
| Chlorine (Cl)2) | 5 | RDeath by death＝68.10m；RHeavy load＝190.39m；RLight and lightweight＝258.17m |
| Arsine (AsH)3) | 12 | RDeath by death＝54.85m；RHeavy load＝254.61m；RLight and lightweight＝440.16m |
| Hydrogen selenide (H)2Se) | 1 | RDeath by death＝161.52m；RHeavy load＝505.13m；RLight and lightweight＝1005.63m |
| Methyl bromide (CH)3-Br) | 10 | RDeath by death＝115.09m；RHeavy load＝182.69m；RLight and lightweight＝847.96m |
5. It is known that places where city lifeline systems and hazardous chemical products are produced and stored can be regarded as disaster carriers and disaster types according to accidents occurring in the places, and the specific situations where the lifeline systems and hazardous chemical product enterprises are affected by the disaster types can be analyzed by referring to coupling relations among the disaster types.
The embodiment of the invention adopts an index weight method to obtain the vulnerability of each disaster-bearing carrier based on the vulnerability factor of each disaster-bearing carrier and the corresponding weight of the vulnerability factor, and the calculation formula is as follows:
V＝S×γ
wherein, V is the vulnerability of the disaster carrier, S is the vulnerability factor of the disaster carrier, and gamma is the weight corresponding to the vulnerability factor.
The vulnerability index formulated by the embodiment of the invention aiming at the risk assessment method for large-scale events held in cities is shown in a table 22.
TABLE 22 Life line system vulnerability index table
Step S120, acquiring initial risk information based on the initial risk index and vulnerability of the disaster type; the disaster carrier is a main body influenced by the disaster type, and the vulnerability factor is a factor of the disaster carrier influenced by the disaster type.
It can be understood that, based on the initial risk index and vulnerability of the disaster category, the calculation formula for calculating the initial risk information of the disaster category is as follows:
Di＝Hi×V
wherein ,DiInitial risk characteristics for the ith disaster category, HiThe initial risk index of the ith disaster type, and V is the vulnerability of the disaster carrier.
According to the urban lifeline risk assessment method provided by the embodiment of the invention, the initial risk index of the disaster type and the vulnerability of the disaster-bearing carrier in the area to be assessed are integrated to obtain the initial risk information of the disaster type, so that the assessment range is more comprehensive, and the assessment result is more accurate.
In some embodiments, step S120 is preceded by: an initial risk index is determined based on the evaluation index of the disaster type and the evaluation index weight corresponding to the evaluation index.
It can be understood that complex relationships exist between each subsystem of the city lifeline system and external environmental factors (natural disasters and dangerous chemical substance accidents), and in order to obtain comprehensive risk assessment results of city lifeline multi-disaster coupling, the embodiment of the invention collects a large number of accident cases, uses the common accident types of each subsystem as disaster types representing the system, and formulates evaluation indexes reflecting the disaster types according to the characteristics of each disaster type. The evaluation index, risk level, and evaluation index weight for each disaster type are shown in table 23.
TABLE 23 summary of disaster type evaluation index, risk size, and evaluation index weight
Note that:
1. the above standards are specific to a lifeline system and a hazardous chemical substance enterprise of an activity area within 3km of an area to be evaluated;
2. the index calculation method is G2 method weight calculation;
3. m in the table is the total number of population (unit: person) in the area to be evaluated within 3 km; s0Is the cross-sectional area (in m) of the communicating line2)；
4. The relation between the safety critical buried depth h and the pipeline buried depth d is
The initial risk index of each disaster type is determined, and the method is the basis of multi-disaster coupling analysis. Based on the evaluation index of each disaster type and the evaluation index weight corresponding to the evaluation index, an index weight method is adopted to calculate the initial risk index of each disaster type, and the calculation formula is as follows:
assuming that m disaster types are in total in the area to be evaluated, the calculation formula of the initial risk index of the ith disaster type is as follows:
wherein ,HiInitial risk index for the ith disaster category, HikRisk size, ω, corresponding to the k-th evaluation index of the ith disaster typeikIs as followsThe evaluation index weight corresponding to the k-th evaluation index of the i disaster types, t is the total number of the evaluation indexes of the i disaster types, HikIs a value determined based on the reference, the national standard and the expert score, and takes 1 digit after the decimal point.
According to the urban lifeline risk assessment method provided by the embodiment of the invention, the initial risk index of the disaster type is comprehensively obtained based on the multiple indexes and the weights corresponding to the indexes, so that the accuracy of the assessment result is ensured.
In some embodiments, step S400 includes steps S410-S420.
And S410, determining disaster coping ability information based on the emergency ability and the response time of emergency treatment.
The emergency rescue ability is understood to be the ability of emergency organizations such as emergency repair units, fire control, medical treatment and the like to quickly, scientifically and orderly deal with accidents after disasters occur, and the damage of the accidents is reduced to the maximum extent. Under the condition that the emergency rescue force is relatively abundant, the emergency system is complete, and the quality of emergency personnel is strong, the emergency rescue capacity can be represented by the distance between an emergency rescue vehicle and an accident scene, and the calculation formula is as follows:
I＝I1×I2×I3
wherein I is disaster response capability information, I1The emergency capacity of emergency personnel after a disaster is a preset value I2The response capability of the fire-fighting rescue personnel after the disaster is a preset value I3For the reaction capability of medical rescue personnel after a disaster occurs, the values of the coefficients of emergency repair, fire protection and medical rescue are determined according to the distance from the incident place to the nearest emergency repair unit, emergency rescue unit, second-level or above medical institutions, and are respectively used as d4、d5 and d6Expressed in km, the reaction capacity is inversely proportional to the distance of the emergency treatment personnel from the site, and the specific values are shown in the table 24.
Table 24 disaster response capability information index table
| Grade | d4、d5 and d6 | I1、I2 and I3 |
| 1 | ≤5 | 1.20 |
| 2 | ≤10 | 1.15 |
| 3 | ≤15 | 1.10 |
| 4 | >15 | 1.05 |
And step S420, acquiring final comprehensive risk information based on the comprehensive risk information and the disaster coping capability information.
It can be understood that the comprehensive risk information is corrected according to the disaster response capability information to obtain final comprehensive risk information in the area to be evaluated, so that the risk evaluation is performed on the city life line more comprehensively and objectively, and the correction formula is as follows:
the comprehensive risk information is the final comprehensive risk information, the comprehensive risk information and the disaster coping capability information.
According to the city lifeline risk assessment method provided by the embodiment of the invention, the comprehensive risk information is corrected by utilizing the disaster coping capability information of the city, so that the assessment accuracy is improved.
The city lifeline risk assessment device provided by the embodiment of the invention is described below, and the city lifeline risk assessment device described below and the city lifeline risk assessment method described above can be referred to correspondingly.
As shown in fig. 4, the apparatus includes: an acquisition unit 510, a determination unit 520, an integration unit 530, and a correction unit 540.
The obtaining unit 510 is configured to obtain initial risk information in an area to be evaluated, where the initial risk information includes a plurality of disaster types and initial risk features corresponding to the disaster types.
It can be understood that, for each disaster category, an initial risk feature corresponds to the disaster category, the initial risk feature is determined comprehensively based on a plurality of evaluation indexes of the disaster category and a plurality of factors such as vulnerability of a disaster carrier in an area to be evaluated, and the initial risk feature is used for representing the influence of the disaster category on a city life line.
The determining unit 520 is configured to determine coupling risk information between a plurality of disaster categories based on the initial risk information.
It is understood that each disaster category has one or more coupled disaster categories corresponding thereto, and the initial risk characteristics of the coupled disaster categories are determined in the same manner as the initial risk characteristics of the disaster categories. The coupled disaster category and the initial risk information of the coupled disaster category constitute coupled risk information.
The integrating unit 530 is configured to determine integrated risk information in the area to be evaluated based on the initial risk information and the coupling risk information.
It is to be appreciated that the integrating unit 530 can determine the coupling risk information based on the initial risk characteristics of the coupling disaster category and the closeness of the coupling relationship between the coupling disaster category and the disaster category. Based on the initial risk information of the disaster type and the coupling risk information of the coupling disaster type, comprehensive risk information in the area to be evaluated can be determined.
The correcting unit 540 is configured to determine final comprehensive risk information in the area to be evaluated based on the comprehensive risk information and the disaster response capability information.
It can be understood that the correcting unit 540 is configured to correct the comprehensive risk information according to the disaster response capability information, to obtain final comprehensive risk information in the area to be evaluated, and to perform risk evaluation on the city lifeline more comprehensively and objectively.
According to the city lifeline risk assessment device provided by the embodiment of the invention, the disaster type and the coupling disaster type associated with the disaster type are integrated to carry out risk assessment on the city lifeline, so that the assessment range is expanded, the device is more in line with objective practice, and the accuracy of assessment is improved.
Fig. 4 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 4: a processor (processor)610, a communication Interface (Communications Interface)620, a memory (memory)630 and a communication bus 640, wherein the processor 610, the communication Interface 620 and the memory 630 communicate with each other via the communication bus 640. The processor 610 may invoke logic instructions in the memory 630 to perform a city lifeline risk assessment method that includes obtaining initial risk information within an area to be assessed, the initial risk information including a plurality of disaster categories and initial risk characteristics corresponding to the disaster categories; determining coupling risk information between a plurality of disaster categories based on the initial risk information; determining comprehensive risk information in the area to be evaluated based on the initial risk information and the coupling risk information; and determining final comprehensive risk information in the area to be evaluated based on the comprehensive risk information and the disaster response capacity information.
It should be noted that, when being implemented specifically, the electronic device in this embodiment may be a server, a PC, or other devices, as long as the structure includes the processor 610, the communication interface 620, the memory 630, and the communication bus 640 shown in fig. 4, where the processor 610, the communication interface 620, and the memory 630 complete mutual communication through the communication bus 640, and the processor 610 may call the logic instruction in the memory 630 to execute the above method. The embodiment does not limit the specific implementation form of the electronic device.
In addition, the logic instructions in the memory 630 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Further, an embodiment of the present invention discloses a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, where the computer program includes program instructions, and when the program instructions are executed by a computer, the computer is capable of executing the city lifeline risk assessment method provided by the above-mentioned method embodiments, the method includes acquiring initial risk information in an area to be assessed, where the initial risk information includes a plurality of disaster categories and initial risk features corresponding to the disaster categories; determining coupling risk information between a plurality of disaster categories based on the initial risk information; determining comprehensive risk information in the area to be evaluated based on the initial risk information and the coupling risk information; and determining final comprehensive risk information in the area to be evaluated based on the comprehensive risk information and the disaster response capacity information.
In another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the city lifeline risk assessment method provided in the foregoing embodiments when executed by a processor, where the method includes acquiring initial risk information in an area to be assessed, where the initial risk information includes a plurality of disaster categories and initial risk features corresponding to the disaster categories; determining coupling risk information between a plurality of disaster categories based on the initial risk information; determining comprehensive risk information in the area to be evaluated based on the initial risk information and the coupling risk information; and determining final comprehensive risk information in the area to be evaluated based on the comprehensive risk information and the disaster response capacity information.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A city lifeline risk assessment method is characterized by comprising the following steps:
acquiring initial risk information in an area to be evaluated, wherein the initial risk information comprises a plurality of disaster types and initial risk characteristics corresponding to the disaster types;
determining coupling risk information between a plurality of disaster categories based on the initial risk information;
determining comprehensive risk information in the area to be evaluated based on the initial risk information and the coupling risk information;
and determining final comprehensive risk information in the area to be evaluated based on the comprehensive risk information and the disaster coping capability information.
2. The city lifeline risk assessment method of claim 1, wherein the initial risk information comprises a plurality of disaster categories and initial risk features corresponding to the disaster categories, and wherein determining coupled risk information between the plurality of disaster categories based on the initial risk information comprises:
acquiring a plurality of coupled disaster types corresponding to the respective disaster types based on the plurality of disaster types;
determining coupling risk characteristics of each corresponding coupling disaster type based on each initial risk information;
and acquiring the coupling risk information based on the coupling disaster type and the coupling risk characteristics.
3. The city lifeline risk assessment method of claim 2, wherein the determining of the integrated risk information within the area to be assessed based on the initial risk information and the coupled risk information comprises:
acquiring a coupling coefficient corresponding to each coupling disaster type based on the initial risk characteristics of the disaster type corresponding to each coupling disaster type;
determining the integrated risk information based on the initial risk information, the coupling risk information, and the coupling coefficient.
4. The city lifeline risk assessment method of claim 3, wherein the determining the integrated risk information based on the initial risk information, the coupling risk information, and the coupling coefficient comprises:
using formulas
Determining the comprehensive risk information;
wherein D is the comprehensive risk information, DiThe initial risk characteristics corresponding to the initial risk information of the ith disaster type, m is the total number of disaster types, DijFor a coupled risk profile corresponding to a jth coupled disaster category corresponding to the ith disaster category,ijand n is the total number of the coupled disaster types corresponding to the ith disaster type.
5. The city lifeline risk assessment method of claim 1, wherein the obtaining of initial risk information in an area to be assessed comprises:
determining the vulnerability of the disaster-bearing carrier based on the vulnerability factor of the disaster-bearing carrier in the area to be evaluated and the vulnerability factor weight corresponding to the vulnerability factor;
acquiring initial risk information based on the initial risk index and the vulnerability of the disaster type;
the disaster carrier is a main body influenced by the disaster type, and the vulnerability factor is a factor of the disaster carrier influenced by the disaster type.
6. The city lifeline risk assessment method of claim 5, wherein before obtaining the initial risk information based on the initial risk index and the vulnerability of the disaster category, comprises:
and determining the initial risk index based on the evaluation index of the disaster type and the evaluation index weight corresponding to the evaluation index.
7. The city lifeline risk assessment method according to any one of claims 1 to 6, wherein the determining of the final integrated risk information in the area to be assessed based on the integrated risk information and disaster response capability information includes:
determining the disaster coping capability information based on the emergency capability and the response time of the emergency treatment;
and acquiring the final comprehensive risk information based on the comprehensive risk information and the disaster coping capability information.
8. An urban lifeline risk assessment device, comprising:
the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring initial risk information in an area to be evaluated, and the initial risk information comprises a plurality of disaster types and initial risk characteristics corresponding to the disaster types;
a determining unit, configured to determine coupling risk information between multiple disaster categories based on the initial risk information;
the comprehensive unit is used for determining comprehensive risk information in the area to be evaluated based on the initial risk information and the coupling risk information;
and the correcting unit is used for determining final comprehensive risk information in the area to be evaluated based on the comprehensive risk information and the disaster coping capability information.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the city lifeline risk assessment method according to any one of claims 1 to 7 are implemented when the program is executed by the processor.
10. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the steps of the city lifeline risk assessment method of any one of claims 1 to 7.
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Cited By (5)
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| CN112633552A (en) * | 2020-11-27 | 2021-04-09 | 合肥泽众城市智能科技有限公司 | Gas pipeline and peripheral pipeline coupling hidden danger identification and risk assessment method and system |
| CN113360843A (en) * | 2021-08-11 | 2021-09-07 | 上海建工集团股份有限公司 | Multi-factor coupling-based security risk management and control method |
| CN113807655A (en) * | 2021-08-13 | 2021-12-17 | 北京理工大学 | Urban lifeline pipeline operation risk assessment method and device and electronic equipment |
| CN114186772A (en) * | 2021-10-22 | 2022-03-15 | 中山大学 | Method for predicting gas leakage risk under coupling action of multiple kinds of disasters |
| CN117333027A (en) * | 2023-12-01 | 2024-01-02 | 广东省电信规划设计院有限公司 | Emergency treatment method and device for multi-disaster coupling accidents in chemical industry park |
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| CN113807655A (en) * | 2021-08-13 | 2021-12-17 | 北京理工大学 | Urban lifeline pipeline operation risk assessment method and device and electronic equipment |
| CN114186772A (en) * | 2021-10-22 | 2022-03-15 | 中山大学 | Method for predicting gas leakage risk under coupling action of multiple kinds of disasters |
| CN117333027A (en) * | 2023-12-01 | 2024-01-02 | 广东省电信规划设计院有限公司 | Emergency treatment method and device for multi-disaster coupling accidents in chemical industry park |
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