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为使高位硬岩影响下矿震发生、传播、响应和诱发冲击的研究更具系统性,以东滩矿43上13工作面为例,采用理论分析、现场监测、数值模拟研究高位硬岩运动诱导矿震活动规律、矿震传播响应规律和诱发冲击型灾害机制,并提出考虑震源区尺度的震能传播耗散规律描述方法。结果表明,高位硬岩运动是强震发生的主要动力源,震源往往沿断层展布而分布,强震发生前后支架阻力振幅增大,频率增高,强震周期特性表现在100 m的大周期内存在50 m的小周期,大周期内会发生4次左右强震;多参量现场监测可瞬态捕捉矿震动力响应;矿震诱发冲击型灾害的机制是矿震使冲击源区聚集能量与变形破坏消耗能量的“差能”增大,当刚度要求被满足时将发生冲击型灾害。
In order to make the occurrence of mine earthquakes under the influence of high hard rock, the research on propagation, response and induced impact is more systematic. Taking the 43rd and 13th face of Dongtan Coal Mine as an example, theoretical analysis, on-site monitoring and numerical simulation are conducted to study the movement of high-level hard rock Induced the law of mine activity, the law of mine earthquake propagation and the mechanism of induced disaster, and proposed a method of describing the law of seismic energy dissipation considering the scale of the source area. The results show that the movement of high-level hard rock is the main source of strong earthquakes. The sources are often distributed along the fault. Before and after the strong earthquake, the amplitude of resistance increases and the frequency increases. The periodic characteristics of strong earthquakes are shown in the large-cycle memory of 100 m In the small period of 50 m, about 4 times strong earthquakes occur in the large period. Multi-parameter on-site monitoring can transiently capture the mine-induced dynamic response. The mechanism of mine-induced earthquake-induced disasters is that the earthquake energy concentrates energy and deformation Damage energy consumption of the “difference energy” increases, when the stiffness requirements will be met when the impact of disasters.