CN108520359A - The construction method of the risk network model of City Rail Transit System - Google Patents
The construction method of the risk network model of City Rail Transit System Download PDFInfo
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- CN108520359A CN108520359A CN201810321895.7A CN201810321895A CN108520359A CN 108520359 A CN108520359 A CN 108520359A CN 201810321895 A CN201810321895 A CN 201810321895A CN 108520359 A CN108520359 A CN 108520359A
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Abstract
The present invention provides a kind of construction methods of the risk network model of City Rail Transit System.This method includes：Definition, classification and the feature of risk point and correlativity are determined according to Risk of Communication evolution Feature in the safety management demand of City Rail Transit System, component structure and system, build risk point set and its dependent interaction set of relations frame；Operating feature is runed according to City Rail Transit System and demand determines type, specification and the content of basic data used in identification and excavation risk point and its correlativity；Its attribute of risk point, risk point and risk point correlativity are extracted in basic data according to operation experience and risk point set frame is described with obtaining complete risk network model.The present invention has not only considered the actual demand of safety management and feature in system operation, the deficiency of the current existing research method of City Rail Transit System secure context is had also contemplated, basic theory support can be provided for urban track traffic operation management and system study of safety theory.
Description
Technical field
The present invention relates to rail traffic safeguard technology field more particularly to a kind of risks of City Rail Transit System
The construction method of network model.
Background technology
In terms of the security implication element of analysis City Rail Transit System and signature analysis, scholars have carried out widely
It explores and studies.To all kinds of accidents of urban transportation for many years, (fire, explosion, derailing, power failure, collision fall domestic and foreign scholars, mill
Collapse, trample) statistical analysis has been carried out, using qualitative and quantitative approach, (PHA, safety checklist, fault type are diagnosed and are influenced
Analysis, accident tree, index method, probabilistic risk assessment method etc.) influence city is had found in terms of " people-machine-ring-pipe " is four
The influent factor of rail traffic safe operation.Some scholars using complex network modeling theory for City Rail Transit System into
Row modeling, such as the topological network model of structure subway network, operations risks network model etc., and the correlation for having studied network is special
Property such as uncalibrated visual servo characteristic, small world, but between risk point interaction relationship research only rest on more simplify and
It obscures in qualitative level, does not propose suitable quantizating index, also not further combined with urban rail system operation characteristic into one
Step analysis Thermodynamic parameters relationship is further refined and classification analysis.
Rail Transit System is very huge, and subsystem is numerous, and correlation is complicated, and traditional analysis method can not fit
Diversified risk challenge is answered, therefore from global angle, analysis system structure is held city rail vehicle, passenger flow, key and set
The correlativity of standby, infrastructure and informatization platform has been increasingly becoming the new hot spot of urban rail system security study.
Therefore, the construction method of the risk network model of City Rail Transit System in the prior art have can not foundation
Practical operation characteristic depicts asking for the correlativity and risk Evolution between City Rail Transit System risk point
Topic.
Invention content
The embodiment provides a kind of construction methods of the risk network model of City Rail Transit System, with solution
Certainly the shortcomings that the prior art.
To achieve the goals above, this invention takes following technical solutions.
A kind of construction method of the risk network model of City Rail Transit System, includes the following steps：
Step 1, according to Risk of Communication evolution Feature in the safety management demand and system of City Rail Transit System, determine
Definition, classification and the feature of risk point and risk point dependent interaction relationship in City Rail Transit System；
Step 2, according to the component structure of City Rail Transit System and the risk point and risk point dependent interaction relationship
Definition, classification and feature, build risk point set frame and risk point dependent interaction set of relations frame；
Step 3, operation operating feature and demand according to City Rail Transit System, determining identification and excavation risk point,
Type, specification and the content of basic data used in risk point dependent interaction relationship；
Step 4, operation experience and risk point set frame, risk point dependent interaction relationship according to City Rail Transit System
Collection frame extracts risk point, the attribute of risk point and risk point dependent interaction relationship in the basic data, obtains city rail
The risk network model of pipeline transportation system.
Further, the step 1 specifically includes：
According to Risk of Communication evolution Feature in the safety management demand and system of City Rail Transit System, by city rail
There are risk attributes, and in the group partial node runed with can generate or propagate risk in production process in traffic system, referred to as
Risk point；
The type of the risk point includes：Physical arrangement class risk point, external environment class risk point, people because of class risk point and
Management training class risk point；
Risk point dependent interaction relationship includes：
1. coupling and interaction relationship between risk point：Including mechanism relationshipElectrical interactivelyAnd information
Interactively
2. the potentially relevant relationship of risk point：Direct interaction relationship is not present between two risk points of finger, but is reflected in
Risk develops and there is logical relation that is certain, being extracted by data or experience in communication process；
3. risk point hides correlativity：Refer to it is being temporarily not known due to the limitation studied at this stage, can be to be extended
Correlativity between risk point.
Further, the step 2 specifically includes：
S21, City Rail Transit System is divided into four subsystems of man-machine endless tube, determines the component structure of each subsystem；
S22, the granularity that risk point extraction is determined according to the safety management demand of City Rail Transit System；
S23, the risk point set frame and risk point dependent interaction set of relations frame for building City Rail Transit System；
The risk point set S frames are as follows：
S={ S1, S2, S3, S4}
Wherein S1、S2、S3、S4It is people, machine, ring, tube system security risk point subset respectively,To belong to k subsystems
I risk points,Expression be described below with parameter：
P indicates that the classification of risk point, value range have physical arrangement class risk point, external environment class risk point, people because of class
Risk point, management training class risk point；
ai(t) liveness of risk point is indicated：To describe one of risk dotted state measurement, indicate the risk point some when
The state value at quarter, 0≤ai(t)≤1；
Indicate the threshold value of risk point：The critical value for referring to the liveness that risk point can cause the accident, whenWhen, it is believed that risk point is not triggered, whenWhen, it is believed that risk point can be triggered；
ri1, ri2..., rijJ attribute for indicating risk point i, refers to the intrinsic hidden danger property of each risk point.
The risk point dependent interaction set of relations frame is as follows：
Wherein lijExisting correlativity between expression risk point i and risk point j；K indicates the type of correlativity, whereinFor mechanism relationship,For electrical interactively,For information function relationship,For potentially relevant relationship.
Further, the step S3 is specifically included：
According to the operation operating feature and demand of City Rail Transit System, determines identification and excavate risk point, risk point
The type, specification and content of basic data used in dependent interaction relationship, the basic data include urban track traffic system
The operation security management of system and daily dimension examine data, specifically include：
1. failure logging, with report form record including abort situation, fault time, defect content, repair
Fault condition；
2. record is inspected periodically, to check that the scope of examination that sheet form compares required by inspections at different levels carries out risk hidden danger
Investigate simultaneously record check situation；
3. accident/event handling report, arranges the occurrence cause of accident/event, development and processing with report form
It applies and result is analyzed and recorded；
4. all kinds of safety management handbooks, the record security administrative standard in the form of rules and regulations.
Further, the step S4 is specifically included：
The risk point set frame that S41, control go out from system components Structural abstraction, risk is corresponded to from all kinds of basic datas
Point, and initial risk point relevant information is obtained to the record of risk point according to basic data, the initial risk point correlation letter
Breath includes risk point attribute information, risk point monitor control index information and risk point secure threshold information；
S42, each attribute for the same risk point that different basic datas sum up is merged and is combed, if sorting out
The attribute and its threshold value for doing the mutually independent risk point, calculate risk point liveness index and risk point state grade, root
According to the attribute and its threshold value of risk point, risk point liveness index and risk point state grade structure risk point set S；
S43, machinery work is established according to the correlativity between the component relationship and each risk point of City Rail Transit System
With relational matrix, electrical interactively matrix, information function relational matrix, potentially relevant relational matrix, made according to the machinery
With relational matrix, electrical interactively matrix, information function relational matrix, potentially relevant relational matrix structure correlativity collection L；
S44, integrated risk point set S and correlativity collection L obtain the risk network model N=＜ of City Rail Transit System
S, L ＞.
The embodiment of the present invention is directed to the network of the past it can be seen from the technical solution that embodiments of the invention described above provide
Model can not provide a kind of risk network structure of complete and architecture City Rail Transit System according to practical operation characteristic
Construction method.The risk network model for the City Rail Transit System that method obtains through the embodiment of the present invention, not only considers
In system operation safety management is actual demand and feature, it is also considered that City Rail Transit System secure context is ground at present
Study carefully the problems of present situation, respected fully intrinsic complicated coupling relationship between large complicated Mechatronic Systems internal composition and
Synergistic effect, correlativity during system operation.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without having to pay creative labor, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of construction method of the risk network model of City Rail Transit System provided in an embodiment of the present invention
Process chart；
Fig. 2 is a kind of component structure figure of City Rail Transit System provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of the risk network model of City Rail Transit System provided in an embodiment of the present invention.
Specific implementation mode
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with attached drawing
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Embodiment one:
Emphasis of the embodiment of the present invention optimizes the expression of correlativity collection and construction method in network model, provides one kind
The construction method of the risk network model of complete and architecture City Rail Transit System, process flow such as Fig. 1 of this method
It is shown, including following processing step：
It is step 1, real according to Risk of Communication evolution Feature in the safety management demand and system of City Rail Transit System etc.
Border foundation determines definition, classification and the feature of the risk point and risk point dependent interaction relationship in City Rail Transit System；
Step 2 builds risk point set and its risk point correlation work according to the system components structure of City Rail Transit System
With set of relations frame；
Step 3, according to the operation operating feature and demand of City Rail Transit System determine identification and excavate risk point and
The type, specification and content of basic data used in its correlativity；
Step 4, according to operation experience and risk point set frame extracted in basic data its attribute of risk point, risk point and
Risk point dependent interaction relationship is described with obtaining complete risk network model.
The step 1 is specially：
The safety management of City Rail Transit System and its internal risks, which are propagated to develop, following characteristics：
1. system scale is huge and complicated, interactively is complicated between each component；
2. typical emerging in large numbers property and Nonadditivity is presented in system；
3. the propagation and evolution of risk are in close relations with internal system environment (state of related component).
Therefore the safety analysis of system entirety must be set up on the basis of system is considered as network model, to being
Risk point and its correlativity inside system are described and analyze.
Therefore the risk point provided in City Rail Transit System is defined as follows：There is risk in City Rail Transit System
Attribute, and in the group partial node runed with can generate or propagate risk in production process, referred to as risk point, a risk point can
To there is several risk attributes.And system risk point is divided into following four classes：
1. physical arrangement class risk point：The subsystems such as the complex electromechanical systems such as vehicle, bridge tunnel infrastructure are referred mainly to be wrapped
Component, equipment or unit for containing etc. can independently undertake corresponding function, and can generate or propagate the group partial node of risk.It is such
Risk point attribute description be various risks and risk that the node can be generated or be propagated current state.
2. external environment class risk point：Refer to comprising can be right in the various external environments including humanistic environment and natural environment
Urban track traffic operation has an impact, and can generate or propagate the substance or factor, the factor of risk.Such risk point attribute
The factor current state value is described.
3. people is because of class risk point：It is related with people, dominated by people and change can to urban track traffic operation generate shadow
It rings, generates or propagate the subjectivity or objective factor of risk.Such risk point attribute description is the factor current state value.
4. management training class risk point：During system operation, it is all kinds of can be to management that operation safety has an impact
The problem of rules and regulations and training system itself or system and defect.Such risk point attribute description is the factor
The current state of the various risks and risk that can generate or propagate.
Correlativity between risk point is broadly divided into following three classes：
1. coupling and interaction relationship between risk point：Including mechanism relationshipElectrical interactivelyAnd information
Interactively
2. the potentially relevant relationship of risk point：Direct interaction relationship is not present between two risk points of finger, but is reflected in
Risk develops and there is logical relation that is certain, being extracted by data or experience in communication process；
3. risk point hides correlativity：Refer to it is being temporarily not known due to the limitation studied at this stage, can be to be extended
Correlativity between risk point.
The step 2 is specially：
The component structure of urban track traffic is determined as shown in Fig. 2, according to urban track traffic operation and management experience, is incited somebody to action
City Rail Transit System is divided into four subsystems of man-machine endless tube, and each subsystem component structure is as follows：
" 1. people " subsystem：Including management and technical staff, operation establishment officer, maintenance of equipment personnel, passenger, emergent people
Member and construction personnel.
" 2. machine " subsystem：Including facility, equipment and dimension inspection equipment three parts；Wherein facility includes civil engineering facility (bridge
Beam, tunnel, roadbed and culvert, station, rolling stock section), circuit (track, conductor rail system, track fixtures)；Equipment includes row
Vehicle (car body, bogie, braking and wind regime, electrical system, hitch and tube passage, security service facility), signal system, power supply system
System, AFC system, communication system (communication line, Transmission system, private telephony system, wireless communication system, closed-circuit television monitoring
System, PIS systems, broadcast system, clock system, power supply and earthed system, communicate centralized alarm system, car door monitoring system,
Tunnel portal alarm system, accessible visible dialogue system, shutdown prompting bell system), fundamentals of management network and information system, machine
Electric system equipment；Dimension inspection equipment includes civil engineering facility dimension inspection equipment, circuit dimension inspection equipment, vehicle dimension inspection equipment, signal system dimension
Inspection equipment, power supply system dimension inspection equipment, AFC system dimension inspection equipment and communication system dimension inspection equipment.
" 3. ring " subsystem：Including operating environment, production environment, natural environment, social environment and protection zone environment.
" 4. pipe " subsystem：Including standard and rules and regulations, maintenance management, operation management, contingency management and staff training
Management.
The safety management demand of different levels corresponds to different risk point granularities, such as the management to system macroscopic aspect
Control system and subsystem level risk point are only needed, the management of system microcosmic point is needed to control specific to component
Each risk point.Trouble unit granularity and managerial experiences, pipe to be recorded in the daily dimension inspection of system and accident report in this patent
Reason demand is with reference to selection risk point.
It is as follows to build risk point set S frames：
S={ S1, S2, S3, S4}
Wherein S1、S2、S3、S4It is people, machine, ring, tube system security risk point subset respectively,To belong to k subsystems
I risk points, in detail expression are described below with parameter：
P indicates that the classification of risk point, value range have physical arrangement class risk point, external environment class risk point, people because of class
Risk point, management training class risk point；
ai(t) liveness of risk point is indicated：To describe one of risk dotted state measurement, indicate the risk point some when
The state value at quarter, 0≤ai(t)≤1；
Indicate the threshold value of risk point：The critical value for referring to the liveness that risk point can cause the accident, whenWhen, it is believed that risk point is not triggered, whenWhen, it is believed that risk point can be triggered；
ri1, ri2..., rijJ attribute for indicating risk point, refers to the intrinsic hidden danger property of each risk point.
It is as follows to build risk point dependent interaction set of relations：
Wherein lijExisting correlativity between expression risk point i and risk point j；K indicates the type of correlativity, whereinFor mechanism relationship,For electrical interactively,For information function relationship,For potentially relevant relationship.
The step 3 is specially：
It collects the safety management of urban track traffic operation system and daily dimension and examines data, and classify to data, it can be with
Data for building risk network can be divided mainly into following three classes：
1. failure logging includes that abort situation, fault time, defect content, repair etc. exist with report form record
Interior fault condition.
2. record is inspected periodically, to check that the scope of examination that sheet form compares required by inspections at different levels carries out risk hidden danger
Investigate simultaneously record check situation.
3. accident/event handling report, arranges the occurrence cause of accident/event, development and processing with report form
It applies and result is analyzed and recorded.
4. all kinds of safety management handbooks, the record security administrative standard in the form of rules and regulations.
The step 4 is specially：
1. compareing the risk point set frame gone out from system components Structural abstraction, risk point is corresponded to from all kinds of data, and
According to data to the record of risk point, initial risk point relevant information is obtained such as：Risk point attribute information, risk point monitoring
Indication information, risk point secure threshold information.
2. being merged and being combed each attribute for the same risk point that data with different sums up：By initial risks point category
Classified, de-redundancy handles to obtain risk point attribute information by information for property；Risk point monitor control index information is merged and joined
Number calibration obtains risk point liveness index calculating method；By risk point secure threshold information contrast liveness index calculating method
Risk point state grade and the threshold value criteria for classifying are obtained, risk point set S is improved and fill.
3. between obtaining each risk point according to City Rail Transit System component relationship and by accident/logout analysis
Correlativity, including：Static connection, coupling and interactively, dynamic Risk of Communication logical relation, and establish mechanism
Relational matrix, electrical interactively matrix, information function relational matrix, potentially relevant relational matrix record the feelings of correlativity
Correlativity collection L is improved and filled to condition (including existence, directionality).
4. integrated risk point set and correlativity collection obtain risk network model N=the ＜ S, L of City Rail Transit System
＞.Fig. 3 is a kind of schematic diagram of the risk network model of City Rail Transit System provided in an embodiment of the present invention.
Embodiment two:
The embodiment provides a kind of risk network establishing method of City Rail Transit System by taking bogie as an example, packet
Include determining risk point and correlativity definition, classification and feature, structure risk point set and its dependent interaction set of relations frame,
City Rail Transit System operation and safety management basic data, system risk network model.
It is as follows：
(1) it determines the component structure of urban track traffic shown in Fig. 2, and layering combing is carried out to system components structure,
By taking bogie as an example, in the component structure of City Rail Transit System, bogie belongs to a part for subsystem " machine ", from layer
The relationship of system to risk point is as follows from the point of view of grade relationship：
Level-one subsystem is " machine "；
Two level subsystem is " equipment "；
Three-level subsystem is " train "；
Level Four subsystem is " bogie ", according to the demand and managerial experiences of safety management, has list in bogie system
Solely monitoring condition, can be used as that repair/replacement unit is existing, granularity meet safety management demand and experience portion during dimension inspection
Part can be chosen as risk point, and the component for being likely to become risk point includes：Wheel to, framework, axle box device, single stage suspension fill
It sets, secondary suspension device, framework draft gear, gear-box and shaft coupling, bogie brake device, device for monitoring speed, troubleshooting
Device, damper, earthing or grounding means, motor-car traction motor etc..
(2) from failure logging, inspect periodically in the report of record, accident/event handling and all kinds of safety management handbooks and choose
With the relevant data of bogie, such as：
1. maintenance repair and monitoring mainly have following focus for wheel to hidden danger and failure：Wheel footpath difference is exceeded, tread damages
Wound stripping, wheel rim transfinite.
2. maintenance repair and monitoring mainly have following focus for bogie brake device hidden danger and failure：Brake shoe is de-
It falls, brake shoe abrasion are transfinited.
3. bogie system is one of key subsystem of train, therefore the logout directly related with bogie failure
It is more rare, it is collected into one and the relevant record of bogie：Foreign body intrusion and rust water in line range stockpile and cause high pressure
Ground fault, the pantagraph current collector mounting base mounted on bogie frame side have had resulted in ablation.
(3) information below in relation to risk network can be obtained from the above data：
1. risk point wheel is to can be described as：
2. risk point bogie brake device can be described as：
3. there is the pantagraph current collector wind for belonging to traction subsystem on train in electrical system with the relevant risk point of risk point framework
Dangerous, because pantagraph current collector is mounted on bogie frame, the relationship of the two is mechanism relationship.
(4) complete City Rail Transit System risk network model can be obtained after integrating all data, partly such as Fig. 3 institutes
Show.
By City Rail Transit System risk network model obtained by the above method, system operation has not only been considered
Middle safety management is actual demand and feature, it is also considered that the present Research of City Rail Transit System secure context at present is filled
Divide the collaboration during complicated coupling relationship and system operation intrinsic between having respected large complicated Mechatronic Systems internal composition
Effect, correlativity.Can be urban track traffic operation management and system by risk network model obtained by the above method
Study of safety theory provides basic theory support, specifically can be applied to following aspect：
(1) urban track traffic operation security management aspect：Safety management can be instructed according to present networks model and answer
Anxious disposition, to achieve the purpose that the intensification of the expansion and influence degree of prevention event coverage.
(2) in terms of urban rail traffic system safety assessment：Present networks model development security of system can be based on to comment
Estimate work.
(3) City Rail Transit System Risk of Communication and Evolution Theory research aspect：It can be according to phase in present networks model
Pass relationship is carried out research risk and is propagated and Evolution Paths there are situation, for example considers that the risk point that sums up of practical work experience is latent
The supplement to tradition cascade fault observer can be completed in correlativity.
In conclusion the embodiment of the present invention can not in detail be portrayed for the network model of the past according to practical operation characteristic
The problem of going out internal risks point correlativity and the risk Evolution in City Rail Transit System, emphasis optimizes network mould
The expression of correlativity collection and construction method in type provide a kind of complete and architecture City Rail Transit System risk net
Network construction method.
The City Rail Transit System risk network model that method obtains through the embodiment of the present invention, not only considers
Safety management is actual demand and feature in system operation, it is also considered that the research of City Rail Transit System secure context at present
The problems of present situation has respected fully complicated coupling relationship and system intrinsic between large complicated Mechatronic Systems internal composition
Synergistic effect, correlativity during operation.Can be that city rail is handed over by risk network model obtained by the above method
Logical operation management and system study of safety theory provide basic theory support, specifically can be applied to following aspect：
(1) urban track traffic operation security management aspect：Safety management can be instructed according to present networks model and answer
Anxious disposition, to achieve the purpose that the intensification of the expansion and influence degree of prevention event coverage.
(2) in terms of urban rail traffic system safety assessment：Present networks model development security of system can be based on to comment
Estimate work.
(3) City Rail Transit System Risk of Communication and Evolution Theory research aspect：It can be according to phase in present networks model
Pass relationship is carried out research risk and is propagated and Evolution Paths there are situation, for example considers that the risk point that sums up of practical work experience is latent
The supplement to tradition cascade fault observer can be completed in correlativity.
One of ordinary skill in the art will appreciate that：Attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Flow is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that：The module in equipment in embodiment can describe to divide according to embodiment
It is distributed in the equipment of embodiment, respective change can also be carried out and be located in one or more equipment different from the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (5)
1. a kind of construction method of the risk network model of City Rail Transit System, which is characterized in that include the following steps：
Step 1, according to Risk of Communication evolution Feature in the safety management demand and system of City Rail Transit System, determine city
Definition, classification and the feature of risk point and risk point dependent interaction relationship in Rail Transit System；
Step 2 is determined according to the component structure of City Rail Transit System and the risk point and risk point dependent interaction relationship
Justice, classification and feature build risk point set frame and risk point dependent interaction set of relations frame；
Step 3, operation operating feature and demand according to City Rail Transit System determine identification and excavate risk point, risk
Type, specification and the content of basic data used in point dependent interaction relationship；
Step 4, operation experience and risk point set frame according to City Rail Transit System, risk point dependent interaction set of relations frame
Frame extracts risk point, the attribute of risk point and risk point dependent interaction relationship in the basic data, obtains city rail and hands over
The risk network model of way system.
2. according to the method described in claim 1, it is characterized in that, the step 1 specifically includes：
According to Risk of Communication evolution Feature in the safety management demand and system of City Rail Transit System, by urban track traffic
There are risk attributes, and in the group partial node runed with can generate or propagate risk in production process, referred to as risk in system
Point；
The type of the risk point includes：Physical arrangement class risk point, external environment class risk point, people are because of class risk point and management
Train class risk point；
Risk point dependent interaction relationship includes：
1. coupling and interaction relationship between risk point：Including mechanism relationshipElectrical interactivelyAnd information function
Relationship
2. the potentially relevant relationship of risk point：Direct interaction relationship is not present between two risk points of finger, but is reflected in risk
Develop and there is logical relation that is certain, being extracted by data or experience in communication process；
3. risk point hides correlativity：Refer to risk being temporarily not known due to the limitation studied at this stage, can be to be extended
Correlativity between point.
3. according to the method described in claim 2, it is characterized in that, the step 2 specifically includes：
S21, City Rail Transit System is divided into four subsystems of man-machine endless tube, determines the component structure of each subsystem；
S22, the granularity that risk point extraction is determined according to the safety management demand of City Rail Transit System；
S23, the risk point set frame and risk point dependent interaction set of relations frame for building City Rail Transit System；
The risk point set S frames are as follows：
S={ S1, S2, S3, S4}
Wherein S1、S2、S3、S4It is people, machine, ring, tube system security risk point subset respectively,To belong to No. i of k subsystems
Risk point,Expression be described below with parameter：
P indicates that the classification of risk point, value range have physical arrangement class risk point, external environment class risk point, people because of class risk
Point, management training class risk point；
ai(t) liveness of risk point is indicated：It is describe one of risk dotted state measurement, indicates the risk point sometime
State value, 0≤ai(t)≤1；
Indicate the threshold value of risk point：The critical value for referring to the liveness that risk point can cause the accident, whenWhen, it is believed that risk point is not triggered, whenWhen, it is believed that risk point can be triggered；
ri1, ri2..., rijJ attribute for indicating risk point i, refers to the intrinsic hidden danger property of each risk point.
The risk point dependent interaction set of relations frame is as follows：
Wherein lijExisting correlativity between expression risk point i and risk point j；K indicates the type of correlativity, wherein
For mechanism relationship,For electrical interactively,For information function relationship,For potentially relevant relationship.
4. according to the method described in claim 1, it is characterized in that, the step S3 is specifically included：
According to the operation operating feature and demand of City Rail Transit System, determine that identification is related to risk point, risk point is excavated
Type, specification and the content of basic data used in interactively, the basic data include City Rail Transit System
Operation security management and daily dimension examine data, specifically include：
1. failure logging, with event of the report form record including abort situation, fault time, defect content, repair
Hinder situation；
2. record is inspected periodically, to check that the scope of examination that sheet form compares required by inspections at different levels investigates risk hidden danger
And record check situation；
3. the report of accident/event handling, with report form to the occurrence cause of accident/event, development and treatment measures and
As a result it is analyzed and is recorded；
4. all kinds of safety management handbooks, the record security administrative standard in the form of rules and regulations.
5. according to the method described in claim 1, it is characterized in that, the step S4 is specifically included：
The risk point set frame that S41, control go out from system components Structural abstraction, risk point is corresponded to from all kinds of basic datas,
And initial risk point relevant information is obtained to the record of risk point according to basic data, the initial risk point relevant information
Including risk point attribute information, risk point monitor control index information and risk point secure threshold information；
S42, each attribute for the same risk point that different basic datas sum up is merged and is combed, sort out several phases
The attribute and its threshold value of the mutual independent risk point, calculate risk point liveness index and risk point state grade, according to wind
Attribute and its threshold value, risk point liveness index and the risk point state grade structure risk point set S nearly put；
S43, mechanism pass is established according to the correlativity between the component relationship and each risk point of City Rail Transit System
It is matrix, electrical interactively matrix, information function relational matrix, potentially relevant relational matrix, is closed according to the mechanism
It is matrix, electrical interactively matrix, information function relational matrix, potentially relevant relational matrix structure correlativity collection L；
S44, integrated risk point set S and correlativity collection L obtain the risk network model N=of City Rail Transit System<S, L>.
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