Mining 0ptimizing Study Of The Gentle-Dipping And Medium-Thickness Oxide Ore Body Of SongShuJiao's Tin Mine Of Tin Corporation Of YunNan

Three-dimensional finite element numerical analog analysis technique has been widely applied to geotechnical engineering. This paper has exactly discussed how to solve optimizing problem of mining engineering which is special underground engineering by means of this technique, for fully realizing the economic and social benefits, in condition of guaranteeing safety'.In consideration of the mining technological conditions of the gentle -dipping and medium-thickness oxide ore body of SongShuJiao's Tin Mine of Tin Corporation of YunNan and roof pre-cut, roof pre-support open stope method in the paper, non-linear three-dimensional finite element numerical analog analysis technique is used to optimize extractive sequence and the stope structure parameters and to simulate the measure of roof control, the influence of site-stress and ultimate exposed area. In this way, the stability analysis of rock wall is made systematically and completely, which has provided reliable basis of guiding mine production.