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The mechanism and simulation method of rock ore granular flow is an important research direction in mining theoretical research. Based on the physical experiment and the Kelvin rheological property of the ore rock, the mechanical constitutive equations of ground subsidence were established and reported in this paper. This model can not only solve the time-space problems involving caving loose body flow but also give the method of determining the time factor α and probability distribution of ground subsidence. Finally, this system was successfully used in the simulation experiment of ground subsidence caused by goaf in a certain iron ore mine, and some important results were obtained which contributes to future further research and development in this area.
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