The Mining Method Study Of Inclined And Fragmentary Middle Thickness Ore-Bodies Of Chagan Silver Deposit In Inner Mongolia

Mining methods are important conditions to insure a mine safely producing, raising labor productivity and getting better economy efficiency. It is this paper's prime purpose to find a safe, high efficient and low cost new mining method for Chagan silver deposit according to the mine's social surrounding, geological features and mining techniques etc elements. All the time, Chagan silver deposit used the mining method-advanced mining along the ore body and backed mining below stratification fill. This causes low capable mining productions and high ore cost at present, and greatly effects the mine future progress. This paper gives a new mining method-the blocks of ore-bodies dropping in the middle or deep boreholes. The method is fit and efficient to mine inclined and fragmentary middle thickness ore-bodies of Chagan silver deposit, with insuring safely mining and good labor conditions, raising production efficiency, getting larger amount of mining, and reducing the ore cost.This paper includes three sections. Firstly, analysing the whole geology, ores and rocks characters of the mining ore-body blocks, geological ore-amounts, water and engineering geology of Chagan silver deposit, the paper gives four technical designs about mining, simply analyses the various designs technicality and economy efficiency, it chooses and emphatically describes a mining design-the blocks of ore-bodies in the middle or deep bore holes. Secondly, according to the explosion similar regularity, choosing various explosion parameters, taking model test, explosion ore modeled in the middle deep boreholes under well. It gets good effect actually and directs the mine to produce. The last, analysing the ground pressure active regularity of the bottom of the ore-body blocks, this paper better designs the important mining works - mining bottom structure, and describes the protection methods and measures of electrical roads. It also gives the mining management system of the mining method on the basis of knowing the mining theory, and provides the theory base for the mine producing.