Research On Evacuation Model Of The Stairs In Passenger Ship

Reviewing the history of maritime transport safety, every significant change of the maritime transport security policy is based on the lesson of the accidents at sea, especially for the passenger ships. Owing to the characteristics of itself, such as there is limited evacuation space, many people are concerned, and the accident occurred at sea in general, the threaten of the safety for the personnel on the passenger ship is distinct. Once the accident happened, it would threaten hundreds or even thousands of lives. Therefore, the study for passenger evacuation has practical significance.In most of the evacuation scenario, the stairs are the main factors that determine the evacuate time. Because its physical size is often smaller than the rest of the building, coupled with it will significantly reduce the walking speed, the staircase is usually considered the bottleneck in the evacuation process. However, a considerable part of the current research related to evacuation is based on the whole set of scenes, just like a building, subway or ship that form the region as a system, for the important and special staircase that connecting multiple plane regions, there is few research on the evacuation, Particularly with the research regard to passenger ships. Therefore, the evacuation study of stairs on passenger ships is very important.This thesis is based on the multi-grid model, combined with probability theory in the theoretical knowledge of the relevant interval estimation, and establish a lattice model which is about the evacuation of stairs on passenger ships that on the state of floating.The relevant data is disposed through the MATLAB, then obtained the relation schema about the cumulative number of evacuee and the time it takes along the particular stair. The relation schema between the evacuation time and D values is also raised. According to the two relation schema, a further research about the number of evacuee and the time it takes is put forward, then analysis the influence of the value of D to the time.