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根据石圪台煤矿的地质资料,制作物理模型模拟2-2煤层的开挖过程,利用声发射仪器检测开采中的声发射信号,对声发射信号参数及其与之对应的微结构演化过程进行研究。从而揭示声发射信号参数(事件数、能率)与围岩损伤状况之间的内在联系。
According to the geological data of Shitutai Coal Mine, a physical model was made to simulate the excavation process of 2-2 coal seam. The acoustic emission signal of mining was detected by acoustic emission apparatus. The parameters of acoustic emission signal and its corresponding microstructure evolution process the study. Which reveals the intrinsic relationship between acoustic emission signal parameters (number of events, energy rate) and the damage status of the surrounding rock.