Fire Experimental Study And Fire Risk Assessment In Wood Processing Industrial Park

Wood processing industry park is an important carrier of forestry industrial cluster.It integrates wood storage,processing,drying,transportation,sales and other links and many companies.Its development of industrial chain vigorously promotes the sustainable development of forestry industry and regional economic growth,but the high integration of enterprises,timber resources,equipment,personnel etc,can increase the risk of a fire in the industrial park.In particular,wood belongs to inflammable materials.Once a fire occurs in an enterprise,it is easy to cause a chain reaction in the park and heavy losses in social,economic and ecological aspects.But at present,the fire research in the wood processing industrial park is almost blank.Therefore,this paper takes the wood processing industrial park as the research object,and the related research is carried out from fire experiment and fire risk evaluation to reduce the fire occurrence.The fire experimental model and the FDS numerical simulation model of workshop fire in wood processing industrial park are build to analysis the development law of fire.At the same time,taking the interaction relations of the influence factor of wood processing industry park into consideration,wood processing industrial park fire risk evaluation model is set up based on the wood processing industry park fire danger index system.In the experimental study,two model proportions were used.A workshop model with a size of 4m×1.6m×0.4m was obtained according to the ratio of 1:37.5.in the combustion experiment,was carried out in a wind-free high frame house to simulate the outdoor environment,and the temperature field of the fire field,the radiation to the adjacent workshop,and the mass loss of the model were obtained under the two conditions of window opening and sealing of the model workshop.The other is to conduct full-size indoor combustion experiments model of the workshop with the size of 2m×0.8m×0.2m according to the ratio of 1:75,and mainly analyze the flue gas composition analysis and heat release rate under two conditions.In the numerical simulation of the fire in the wood processing industrial park,FDS software was used to simulate the workshop fire according to the ratio of 1:37.5,and analyze the smoke filling process,temperature field and heat release rate of the fire under different working conditions.In this paper,the feasibility of the model is verified by comparing the experimental measured value with the numerical simulation value,and it can be used as a reference for fire simulation in similar scene or larger scale.In the study of risk factors of wood processing industry park,based on the theory of the system theory,accident cause theory,by consulting experts and combining with actual production,fire factor index system of wood processing industry park was built in personnel,equipment,combustible,environment and management perspectives,including 16 factors:basic quality of personnel,fire protection safety awareness,personnel work ability,equipment operation load,equipment inspection and maintenance,wood products and storage conditions,processing residues,fire resistance of infrastructure,natural factors fire risk,construction plan and configuration for fire protection,park scale,fire safety atmosphere,fire control facilities management,fire emergency management,fire safety system,safety education and training.Further from the angle of interaction and coupling of fire risk factors,using the integrated DEMATEL/1SM method to establish the interaction relation model of fire risk influencing factors,judge the index properties and important degree of the factors and a 5 layer-3 order multilevel interpretation structure model of factor relation is constructed,which provides theoretical basis for the correct control of fire protection management direction in wood processing industry park;On the other hand,the fuzzy cross analysis is further used to predict the change trend of the fire risk factors under the interaction,which provides a theoretical basis for the safe production,and fire safety decision of the wood processing industrial park.In the study of fire risk grade evaluation of wood processing industrial park,the improved matter-element extension method is used to establish the prediction model of fire risk grade of wood processing industrial park based on the established fire risk index system of wood processing industry park.And the sensitive factors are clear by applying Sobol method.Then an example is analyzed to realize the evaluation of fire risk grade of wood processing industrial park.In the process of model application,the radar map is introduced to analyze the fire risk of single index,and the visualization is used to provide guidance for the safe production in the park.Research presented in this paper can provide beneficial reference for fire experiment and fire risk evaluation in the wood processing industry park,and provide improvement suggestions in many aspects for fire safety management of the wood processing industry park In the future research,the experimental subjects of the park will be expanded on the basis of this research to analyze the law of fire spreading in the wood processing industrial park under the coupling effect.