| Based on engineering conditions of deep rock roadway of Wangfenggang Mine in Huainan Mining Industry, comprehensive research techniques including of theoretical analysis, in-situ measurement and three-dimension numerical simulation are carried out to investigate into stress laws and displacement laws of roadway in deep mine.In theory from the viewpoint of creep damage, creep damage model is established to reveal the regularity of deep roadway deformation and destruction. With the measured displacement is calculated by theory of undetermined parameters in the model. At the same time, using numerical simulation of rheological model by the deep roadway is set up, analyzed, finally compared with the engineering practice, and reveals the deep surrounding rock mechanics features of bolt-grouting soft rock tunnel, the stability of the roadway and its engineering countermeasure and so on. Research results not only provide theoretical guidance for the mine deep roadway stability, but also for the similar conditions of deep soft rock roadways support provided the scientific basis. |
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