西北某铅锌矿岩体质量评价研究

here is large number of mined-out area and security management is difficult.It is a serious impact on mine production in Northwest of a lead-zinc mine. In this paper, two kinds of mechanical loading and unloading state of the rocks the whole process of stress-strain test. Reveal the characteristics of rock deformation. Identified the stope rock mechanics parameters. On the rock strength, the quality factors are classified. To rock mass quality grading. Stability analysis for mined-out area and ground pressure activity patterns of the study provides an important analysis of data.