Simulation analysis of leakage,diffusion and explosion of ships carrying dangerous goods while waiting for lock and mooring

In order to minimize the casualties and economic losses caused by dangerous goods leakage accidents caused by dangerous goods ships passing through the Three Gorges ship locks and waiting to be anchored,the article is based on the ALOHA software,which comprehensively considers the volume of dangerous goods passing through the Three Gorges locks,the form of dangerous goods,the form of packaging and Physical and chemical properties and other factors were used to determine the numerical simulation parameters,and numerical simulations were carried out for methanol,1,2-xylene,and oil and gas in the toxic area,flammable area,and explosion area of the vapor cloud.Combined with the MARPLOT software,the numerical simulation results were fitted to the Three Gorges Waiting Gate.The electronic river map of the anchorage is visualized.And through the analysis of the numerical simulation results,it is proposed that for the leakage accident of methanol,1,2 xylene and oil and gas,the emergency response warning range should be set at 3000m,781m and 6300m downwind of the leakage source,so as to effectively guide the danger.The anchoring of the ship before passing the lock is safe.