According to the Hoek-Brown criterion,the rock mechanics parameters of ore body and surrounding rock are ob-tained by using the software Roclab1.0 to calculate the experimental parameters of rock mechanics.On this basis,FLAC3D is applied to numerical simulation of the changes of the maximum principal stress,vertical displacement and plastic zone of surrounding rock and roadway in goaf area after mining of ore body in lead-zinc mine.To determine the influence of lead-zinc ore body mining on the existing roadway,and finally provide the corresponding theoretical basis for the field goaf treatment.
lead-zinc minegob areanumerical simulationmaximum principal stressplastic zone
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