燃气爆炸事故中软管物证案例分析及数据库建立OA

The hose connecting the gas source and the stove is a kind of common material evidence in the scene of indoor gas explosion accident,which plays an important role in the accident investigation.Taking several real indoor gas explosion accidents as cases,this paper analyzes the role of hose physical evidence and trace evidence in accident investigation and back analysis.The results show that in two cases of gas explosion,by analyzing the morphology of the hose and testing the characteristic parameters of the hose,it is confirmed that the glass transition temperature of the hose is higher,and the on-site temperature is much lower than the embrittlement cracking caused by the glass transition temperature.In a fire accident case of gas explosion,the appearance of the hose is intact and can eliminate the gas explosion accident caused by the leakage of the LPG tank connected by the hose.The database of gas hose trace certificate in gas explosion accident is established,accident information and hose picture information can be added to the database,and the existing information in the database can be retrieved.The research results can provide reference for the investigation and inversion of gas explosion accidents.