高位硬岩运动诱导矿震活动规律与传播响应特征

发布时间：2018-03-22 03:22

本文选题：高位硬岩　切入点：矿震　出处：《中国安全科学学报》2017年03期 　论文类型：期刊论文

【摘要】：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。
[Abstract]:In order to make the study of ore earthquake occurrence, propagation, response and induced shock more systematic under the influence of high hard rock, taking the No. 13 face of No. 43 Dongtan Mine as an example, theoretical analysis and field monitoring are adopted. Numerical simulation is carried out to study the regularity of ore earthquake activity induced by the movement of high hard rock, the law of mine earthquake propagation response and the mechanism of induced shock type disaster, and the method of describing the law of seismic energy transmission and dissipation considering the scale of earthquake source area is proposed. The results show that, The high position hard rock movement is the main power source of strong earthquake, and the source is distributed along the fault. Before and after the strong earthquake, the amplitude of support resistance increases and the frequency increases. The periodic characteristic of strong earthquake is that there is a small period of 50 m in the large period of 100 m. There will be about 4 strong earthquakes in large period, multi-parameter field monitoring can be used to detect the response of transient mineral vibration force, the mechanism of mine earthquake induced shock type disaster is the increase of "differential energy" of energy accumulation and energy consumption of deformation and destruction caused by mine earthquake. When the stiffness requirement is satisfied, the impact disaster will occur.
【作者单位】：辽宁工程技术大学矿业学院;
【基金】：国家自然科学基金资助(51304110) 辽宁省高等学校优秀人才支持计划项目(LJQ2013039)
【分类号】：TD324

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