Research On Key Issues Of Emergency Management Of High-speed Railway In Perilous And Mountainous Areas

In recent years,with large-scale construction of high-speed railway in perilous and mountainous areas,more and more high-speed railway are in operation."Railway Network Planning" clearly states that the overall national security concept must be implemented and the railway emergency support level must be enhanced.Therefore,emergency management is an important task for high-speed railway in perilous and mountainous areas.The emergency management of high-speed railway in perilous and mountainous areas has the following characteristics:(1)High-speed railway in perilous and mountainous areas passes through the region with great fluctuation,complex terrain and topography,high frequency and high danger geological disasters.The emergency events are caused by multi-factor,occurrence and evolution mechanism of emergency events are complex.(2)High-speed railway in perilous and mountainous areas passes through underdeveloped areas,infrastructure and emergency equipment,resources and facilities are inadequate,which makes emergency response capacity week.(3)The distance between railway stations in perilous and mountainous areas is relatively long and the ratio of bridge and tunnel is high.It is difficult to carry out emergency rescue.After the disaster,many departments need to work together to complete the emergency rescue work.(4)Secondary disasters easily occur in high-speed railway in perilous and mountainous areas.If the emergency response is not timely,it will cause further loss of personnel and property.(5)The time and place of emergencies are uncertain and the number of emergency resources is also uncertain.At present,the emergency management of high-speed railway in perilous and mountainous areas is still in early stage.The occurrence and evolution mechanism of emergent events lack systemical analysis.Few scholars have studied the allocation of emergency resources from the perspective of emergency management zoning.The methods,mechanisms and decisionmaking models of emergency coordination need to be determined.The evaluation system of emergency capabilities needs further improvement.Around the problems and characteristics of emergency management of high-speed railway in perilous and mountainous areas,the main work and conclusions of this paper are as follows:(1)The structure and mode of emergency management of high-speed railway in harddangerous mountainous area have been studied.Firstly,the differences of emergency management between the high-speed railway in perilous and mountainous areas and the ordinary railway is analyzed.Secondly,the system,mechanism,laws and regulations,emergency plan and emergency resource system of emergency management are summarized.The stage division model of emergency management of high-speed railway in perilous and mountainous areas and the emergency management works of each stage are put forward.Therefore,the emergency management architecture is proposed.(2)The emergency management zoning model and emergency resource allocation model of high-speed railway in perilous and mountainous areas are established.First of all,the influencing factors of emergency management zoning have been studied and the emergency management zoning is divided into four levels: easy area,general area,difficult area and extremely difficult area.Secondly,the emergency management zoning model is established based on cloud and matter-element theory.High-speed railway from Guiyang-guangzhou is taken as an example.On the basis of determining each parameter of emergency management zone,emergency management zone is partitioned according to emergency management zone calculation model and the feasibility of the calculation method is verified.Finally,based on the emergency management zoning research emergency resource allocation model is established and the feasibility of model is verified.(3)The coupling risk degree model and risk factors coupling route model of high-speed railway in perilous and mountainous areas are studied.Firstly,based on the system dynamics model,a risk coupling route model is established.Secondly,the statistics of emergency events related to high-speed railways in perilous and mountainous areas are collected,the risk period is divided into “period with greater risk” and “period with less risk” according to the statistical data.Finally,based on the N-K model,a risk-coupling calculation model of high-speed railway in perilous and mountainous areas is proposed.Taking the statistical data as an example,the coupling risk under four emergency events of high-speed railway in perilous and mountainous areas are calculated.The causes of four emergencies events are identified by calculation and the generation mechanism of emergency events is explained.(4)The brittleness connection,brittleness structure and brittleness degree of high-speed railway in perilous and mountainous areas are studied.Firstly,the evolution units and modes of emergency events are explored.Based on set pair analysis theory and entropy theory,a computational model of brittleness connection entropy is established.Based on the statistics of emergency events of high-speed railway in perilous and mountainous areas,the brittleness connection entropy model is verified.Secondly,based on the ISM model,the hierarchical model of the brittleness structure is studied.Finally,based on the catastrophe theory,a brittleness calculation model is established.Based on the statistical data,the brittleness degree of each subsystem under four kinds of emergencies is calculated.Through the calculation,evolution factors under four emergency events are identified and the evolution law of emergency events is found out.(5)The evaluation model of emergency capability of high-speed railway in perilous and mountainous areas is established.The characteristics of emergency capability,the constituent factors and the evaluation process of emergency capability are discussed.The emergency capability is divided into daily emergency capability under non-accident status and emergency response capability under accident status and emergency capability evaluation system is established.Based on linguistic theory,this paper constructs the emergency capability evaluation model and takes the Guiyang-guangzhou high-speed railway as an example to verify the emergency capacity evaluation model.The calculation results show that the emergency capability of Guiyang-guangzhou high-speed railway is at "normal" level.(6)The emergency coordination degree model and emergency coordination decisionmaking model of high-speed railway perilous and mountainous areas are studied.Firstly,the mechanism and decision method of emergency coordination are studied and the index system of emergency coordination degree is proposed.Based on the triangle intuitionistic fuzzy numbers and the synergetics theory,the calculation model of emergency coordination degree is established.Secondly,the subject of emergency coordination decision-making and the steps of collaborative decision-making are studied.Based on the prospect theory,the emergency collaborative decision-making model is constructed.Taking the Guiyang-guangzhou highspeed railway as an example,the coordination degree values and the comprehensive prospect values of emergency coordination combination plans are calculated,the optimal emergency collaborative plans are selected,which verifies the emergency coordination models.