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Gannan , China and the world -famous mineral wolframite , will have been faced with the ongoing mining activities , unprocessed goaf increasing residual pillar growing problems . Space formed by the mining enterprises in the underground deposit mining process is called a gob, it destroyed the original static balance of the rock mass , gobs of rock stress changes and redistribution . The goaf disaster is one of the major disasters of mine common ground pressure lead to cause spalling , roof collapse , water inrush , earthquakes, rock blasting, rock burst , ground subsidence , ground subsidence , ground fissures and other forms of disaster . On the other hand security back the mining column with processing goaf is a major technical issue that must be addressed . For the security and stability of Gannan tungsten mine underground goaf system, in-depth study , specific study include: ( 1 ) First, through in-depth site survey , a detailed analysis of the system , the ground pressure characteristics of of Gannan tungsten ore . (2) collect , query a large number of documents and information about the impact goaf stability on the basis of the the goaf stability of the factors system analysis . ( 3 ) to establish a comprehensive evaluation method based on the relationship matrix and fuzzy theory goaf stability , (4 ) the stability of the goaf comprehensive evaluation method used in quarries , combined with numerical simulation software goaf stability comparison Authentication . ( 5) of the empty area instability , combined with the specific conditions of the mine , construct a new mechanical environment , science , fast and efficient reference for mine goaf treatment . The research topics of Gannan Tungsten Gob the lower mining operations lasting security has a certain significance .
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