Crowd Flow Distribution Of Evacuation Path For Vertical Ship Lift Fire

As a kind of high dam project,the vertical ship lift is able to adapt to the large variation of navigable water level,and plays an important role in promoting the development of inland navigation in China.There are a lot of inflammables in the passing ship,and fire is the biggest challenge to the safe operation of the ship lift.Because of the closed structure and the narrow internal space of the ship lift,it is very difficult to evacuate people in the case of fire.This paper takes this as a research background,analyzes the fire situation of the shiplift,builds a flow distribution model,and uses Pathfinder software to carry out simulation experiments.From the perspective of improving the evacuation efficiency of personnel and shortening the evacuation time,the evacuation path of the vertical shiplift fire crowd In-depth study of traffic distribution.details as follows:Firstly,this paper analyzes the causes,characteristics,development process of vertical ship lift fire to show the importance of crowd flow distribution at the beginning of the fire.Two commonly used evacuation methods of elevators and stairs for vertical ship lift fire are analyzed to point out the necessity of using elevator to coordinate evacuation.And then three evacuation routes,including using elevator to evacuate to the nearest evacuation platform,using stairs to evacuate to the upstream evacuation platform and using stairs to evacuate to the downstream evacuation platform,as well as evacuation number and fire elevation are determined based on the structural characteristics of vertical ship lift.Subsequently,according to the structure and operating characteristics of the ship lift,the docking rules are determined,and the cooperative evacuation time model of stairs and elevators is constructed to clarify the evacuation time and vertical evacuation time of the evacuees using stairs and elevators.According to the relationship between the docking elevation and the evacuation platform,the route flow distribution is carried out and the shortest evacuation time is taken as the objective of simulation optimization.Finally,taking the Three Gorges shiplift as an example,Pathfinder software was used for modeling and simulation to carry out experimental analysis,and the evacuation time variation curves under different evacuation numbers and fire elevations respectively was constructed to calculate the optimal evacuation flow distribution in shortest evacuation time by using Matlab software,so as to provide a basis for vertical ship lift fire evacuation.This study can effectively shorten the evacuation time and improve the evacuation efficiency by reasonably distributing the crowd flow in the evacuation path,which has a strong application value.