Hazard detection and comprehensive control technologies of the integrated resource coal mine goafs in China
Résumé
The problem of goafs disaster has become a major puzzle for the resources integrate coal mines in China. Based on the analysis of goafs disaster types and characteristics, the hazard detection and comprehensive control technologies were systematically put forward. The technologies including the goafs hazard detection technologies combined ground survey and undermine detection; the goafs risk classification and assessment technologies combined risk degree classification, qualitative and quantitative evaluation; the goafs disaster monitoring technologies combined local monitoring, regional monitoring, monitoring joint undermine and surface; the goafs comprehensive control technologies combined open stripe, grouting and roof caving on surface or undermine; the goaf safety guarantee technologies combined matching funds, policy support and administrative supervision. The results showed that the goaf disaster was divided into four types according to the disaster forms in resources integrates coal mines, that is, the abandoned old goafs or pit shaft permeable, goafs fire including coal combustion and gas explosion, the poisonous and harmful gas in goafs emission, the adverse abnormal geological disaster. The goafs have the characteristics of unknown distribution, different kinds of disaster types, concealment and happened suddenly, unpredictable, etc.. The control principles were summarized and put forward, including ground survey in advance, undermine detection follow up, hazard assessment and evaluation in time, monitoring and supervisory in place, comprehensive control for disaster reduction, safety measures for guarantee.Références
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