| In this study, the problem which using open stoping mining led to instability ofmined out area of Eastern Hubei Hualing Group owned mines is research object. Thesolid medium will release the phenomenon of acoustic emission signal under theloading along with the deformation and failure of internal structures. Thus, using theacoustic emission technique monitor the underground pressure. However, before theacoustic emission monitoring work, using numerical analysis method ascertain the keymonitoring area and optimize the acoustic emission monitoring points. Researchesshow that the signal of acoustic emission can reflect the state of mined out area.Therefore, using acoustic emission parameters which is the big event, total event, andenergy rate set up a prediction model of three state variables, then, solve the mode andanalyse the ability of the model’s prediction and forecast. The results show that themodel has good and strong of prediction and feasibility and can be used as an effectivemean to analyse the stability of mined out area. |
