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Non-coal mine safety In coaf is a important theoretical significance and application value of research topics.In this paper,Yanji City,Jilin Province and Helongchangren Gold goaf to analyze how goaf safety assessment and how to deal with goaf,mainly to complete the following tasks:After referring to a large amount of literature materials,it summarizes the history and the present state of the research on the theory of the mining subsidence,expounds in detail about two main types of research methods:Statistic method,Mechanical study method,and also points out the disadvantages of them.After the explosive substances, flammable substances,dangerous substances classified as major hazard installations have done a qualitative and quantitative analysis.In particular,mine hazards,there are two important aspects,on the one hand goaf roof caving large area,resulting in surface subsidence and cracking;on the other hand,in the mining process,the mined-out area, such as rock by blasting vibration caused by rock body fracture,and even surface,or connected through the old water hole,water inrush incidents occurred.This article revolves around gold Changren goaf the main line of the safety assessment of long-jen mine made a payment in this case after a brief introduction on the safety of goaf conducted its work in these areas,the long gold-jen goaf rock mechanics,fluid mechanics,elasticity stability analysis done on goaf probability disasters were qualitative and quantitative analysis of the affected body made the value of wealth accounting for goaf other hazards also analyzed,and the long gold-jen goaf done a safety assessment.Finally the long-jen goaf gold in the security assessment made based on the comparison,according to the basic situation of the mine,while in the security aspects of the economy has been optimized,and ultimately chose to approach filling method.It is also a safety assessment goaf a major application,with this article can be a comprehensive and deeper understanding of the safety assessment of mined-out area in the research and application.
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