关键词: 可燃气体, 点火源, 爆炸, 火灾调查

Abstract: Against a gas leakage and explosion occurred in a Japanese restaurant in Shenzhen, the fire investigation was conducted. Based on the analysis of the explosion cause, explosion process and shock wave release of the accident, combined with the experimental research data of others, this thesis summarizes the general law of gas leakage and explosion in confined space, and provides reference for the prevention, rescue and investigation of such accidents.

Key words: combustible gas, ignition source, explosion, fire investigation