Early warning technology of regional security situation of gas disasters

In order to further improve the prevention and control capabilities of coal mine gas disasters in China and enhance efficiency of supervision, early warning technology of regional security situation of gas disasters was studied. According to coal mine supervision and management mode in China, early warning regions are divided into four regional levels: national region, provincial (city) level regions, coal supervision sub-bureau jurisdiction regions, and prefecture-level administrative regions. According to the needs of hierarchical control, the early warning is divided into four levels: blue, yellow, orange and red, and its risk level increases sequentially. The early warning index system of regional security situation of gas disasters has been established from five aspects: inherent natural attributes of regional coal mines, mine layout and mining conditions, temporal and spatial laws of accidents, acro technology and economic policies, and major hidden dangers in mines. The early warning model based on analytic hierarchy process has been constructed to realize the fusion analysis and decision-making of multiple indicators, and the regional early warning software system has been designed and developed to realize the dynamic data collection and storage, comprehensive analysis and real-time data early warning.