Study On Disposal Optimizing Project Of Underground Gob Area Of Metal Mine

Stoping pillars and disposing gobs is an important technical process of underground mine,the quality of Stoping pillars and disposing gobs not only directly influences tne mine's economic returns and the reclamation of underground useful resources but also in connection with the safety in production and ecological environment of the mine.The methods selection of Stoping pillars and disposing gobs are in relation to the mechanical property of the rock,the existent time of pillars and the exchange disciplinarian of ground pressure. Generally,we should Stope pillars and dispose gobs in time after the rooms are mined,but because of the high cost and difficulty of gobs disposing,many mines have lots of pillars left after the rooms are mined and gobs are not disposed.Against this existing state,the paper based on the blowing up of the adjacent rock and gob disposing,regarding Jianlong iron stope as research object,establishes three-dimensional finite element models, through the study of engineering geology and parameter of stope and the field of original rock stress,applying ANSYS numerical modelling analysed the process of underground stope and the pillar stoping and substep dynamic disposing roof of the gob,at the same time,it gives the whole process a stability analysis step by step and models the caving process of the wall rock.and confirms the figure and field of caving arch of the roof wall rock,whatsmore,the paper finds the physical model and experiential formula,and it puts forward the project of the disposing gob that is based on foreknowledge shope and scope of the caving arch to arrange engineering.The achievement of the paper has important instruction significance for underground mines formd by sedimentary rock to dispose gob.Especially in the circs that our country hasn't enough mineral resources at the present time, the study is important to make full use of resources and get rid of safety incipient fault in time and reduce cost at the most . The achievement is worth expanding and its developing foreground is wide.