Experiment Research On Stability And Dynamic Displacement Characters Due To Slope Excavation In Open-pit Mine

There are many large-scale open-pit mine which occupies capacious space in our country, and its slope height will come to 300m - 500m ordinarily. With the advancement of excavation, the slope height increases taller and taller, and the difficulty of open-pit slope stability and the probability of breakage becomes bigger for serious conditions of production. So the determination of slope angle and the analysis of stability and slope reinforcement are very important, and the stability of open-pit slope turns into a special research problem.The research premises slope stability with getting dynamic displacement characters, geological mechanical model and its process of evolvement. However, Geological model of open-pit slope is associated, as by the rock mass structure and geological structure especially. The process of excavation and slope mining are simulated, the displacements of rock mass are observed ever and again in this thesis. The displacement laws of slope rock mass are gained. The engineering geologic and structure conditions, mechanical model, the mechanism of breakage are hold by and large. The model of idiographic engineering geology is put forwarded in the open-pit mine.At base of above-mentioned study, the excavation process and stability of slope are analysed with non-linear limit element method (Fast Lagrangian Analysis of Continua)and limit equation analysis method. The distribution of stress, creep displacement characters and development of plastic zone are acquired. Furthermore, the breakage mechanism of rock slope is talked, and the academic referenced value is provided for quantificational scientific forecast and engineering reinforcement observation of slope dynamic evolvement process by all mean.