Abstract: In order to optimize allocation of emergency disposal resources and manage the construction safety accidents caused by rainstorm disasters effectively,six factors including personnel, equipment, materials, command, environment, information and correlations between them were systematically studied by using the system dynamics method. A construction safety accident emergency disposal SD model was built. 18 typical projects were used to carry on the empirical analysis. And an optimization strategy was put forward for the disposal. The result shows that the most important measure to improve the emergency disposal efficiency is increasing the speed and quality of information transmission during the early stage, increasing the decision efficiency of emergency command institution during the middle stage, and ensuring the dynamic allocation of the emergency resources in the whole process.

Key words: rainstorm disasters, construction safety accident, emergency disposal, system dynamics(SD) model, empirical analysis