Wu Copper Goaf Processing Technology Research,

With the rapid development of national economy,mineral resource has become the guarantee of it.How to improve mining technology and production efficiency,then to prevent security incidents occurred become pressing problems.Combining with"the study on emptied stope processing technology of Liwu copper mine",adopting manifold research methods such as in-site investigation,theoretical analysis,indoor mechanical testing and numerical simulation, the stability of the ground pressure and the processing methods of caved area is researched.The basis of production safety in mine is offered.The following are the main researches.(1)The information about engineering geology,hydrologic(al) geology,ore body occurrence characteristics,mining methods and mining situation is investigated in Liwu copper mine.(2)The activities of historical extensive rock move and appearance of ground pressure is investigated,then the reason is analyzed in Liwu copper mine.(3)On the basis of the three-dimensional elasticity theoty and 3D-σsoftware,Four models about analysis the stability of the wall rock,calculate the exposed area of mined-out areas,numerical simulate the avalanche-distance of the roof rock,the stability of multi-excavation and pillar are established.(4)On the basis of the consequences of numerical simulate,the models'stess and strain is grasp,then some conclusions and suggestions are proposed.(5)The acceptable methods in process mined-out area,construction of mined-out area and interrelated measures are advanced.