Study On Spreading Simulation Of4.30Hannuohe Fire Of Daxinganling Heilongjiang Province

Improving simulation accuracy is an important goal of fire behavior modelling. The accuracy of the simulation of forest fires is affected by some factors, as follow, the accuracy of the model of the spread of forest fires, the information of fuel and environment (weather and terrain, etc.). This paper is take the4.30fire which occurred in Daxinganling Hannuohe as a example to study the situation of the simulation of forest fires spreading under the influence of different fuel and meteorological data, and focus on the information about the fuel. Three simulation experiments were designed, the simulation experiment of single fuel model and the change of single parameter; single fuel model and a combination change of parameter; three kind of fuel model and a combination change of parameter.3294simulations were conducted and the smallest simulation error was identified by two evaluations of analog precision to judgment error situation. The smallest simulation error is the best simulation results. The parameter values of the three fuel which were corresponding to the simulation results of minimum error were the optimal parameter values of the fuel model of the fire occurred in Hannuohe. The strike fire was added in this paper to simulate the simulation situation of fires spreading under the situation of anthropogenic strike fire, and the simulation situations of fires spreading under different meteorological data were compared. The meteorological data were interpolation that were downloaded from weather station and the meteorological data was generated MSM.The final simulation results show that:(1) The simulation of three fuel combination of parameters change, the minimum error of the Kappa coefficient is20.59%, the Sorensen coefficient is30.4%. The maximum error of the Kappa coefficient was2.78%, the Sorensen coefficient of13.78%. The fuel parameters which were correspond to the minimum error are:; grass load are1kg·m-2, forest load are0.5kg·m-2, shrub fuel depth are0.4m.(2)The strike fire belt has a very important influence on the shape of fire and the simulation of fire spreading, when strike fire belt was added, the Kappa coefficient and the S(?)rensen coefficient are much higher than these coefficients obtained from the nature simulation results of fires spreading.(3)The simulation accuracy of by adding the meteorological data generated by the MSM model is more accurate than the simulation accuracy of by adding the interpolation meteorological data downloaded from the weather station.