The. Southern Slope Of Copper Shrinkage Stoping Method Stope Risk Factors Analysis And Research

With the growing demand soared surface of mineral resource exhaustion in recent years of China, and shallow open-pit mine due to the increasing mining depth, the underground mining and deep mining is becoming more and more important. If only uses a single method, only from a single Angle to analysis and research, and its results will be biased.Based on the MengLaXian MoHan light acquisition of yunnan copper, for example, south slope of shallow holes left all kinds of dangerous stope mining method factors were discussed and analyzed the stope.And in the paper according to the building of the coupled action of stope risk evaluation modelreveals its security implications major controlling factors. At last according to the influence of the stope four major controlling factors:safety stope mining rock quality, secondary stress distribution, blasting shock and time effect from four aspects.This paper research content as follows:①The risk analysis on stability of stope and simplified the harmful factors for the rock quality, secondary stress distribution, blasting effect three major controlling factors;②For all of the influence factors of the dimensionless processing, and establish the stability of stope quantitatively the effect is a function;③On each affecting factor method of fuzzy hierarchy weight distribution;④The factor of quality of rock mass is widely used by geological CSIR classification method to evaluate, and concluded that the effect is a function of stope;⑤Using ANSYS software analyses the distribution of stress around the stope, and will stress distribution or displacement distribution into effect coefficient distribution;⑥Use of blasting factors engineering analogy method, damage theory analysis, and draw the conclusion that the effect is a function of stope;⑦Using exponential synthetic evaluation method to establish the southern slope copper mine stope comprehensive effect is a function, and from the three elements of stope stability influence presents the underground mine stope disaster warning preventive measures.