固体潮汐应力与矿震触发之间的相关性及其作用机理分析

发布时间：2018-05-21 10:02

本文选题：矿震 + 潮汐应力　；参考：《采矿与安全工程学报》2016年03期

【摘要】：矿震的发生与地球固体潮汐活动存在一定相关性,为进一步探明固体潮汐应力对矿震的触发作用,本文以国内典型冲击灾害频发的华亭煤田矿区为研究背景,采用Schuster检验方法对发生在顶板中的矿震进行了固体潮日潮变化的统计分析。结果显示:1)固体潮汐应力对矿震的发生存在显著触发作用,矿震发生的频次与潮汐应力垂直、东西、南北和水平剪应力分量的相位角之间都有显著的相关性,Schuster检验P值均小于触发阈值0.05;2)潮汐应力对不同级别矿震触发作用存在差异,随着震级的增大,矿震的发生由重力控制转为构造应力控制;3)对不同类型矿震的触发力学作用不同,对于重力控制的中小型矿震,潮汐应力垂直分量最大(受压)、水平分量最小(受拉)时矿震较易发生,而构造应力控制的大级别矿震则与之相反;4)矿震活动也会造成相关区域地层中的钻孔应变时序形态产生畸变。
[Abstract]:There is a certain correlation between the occurrence of ore shock and the earth's solid tide activity. In order to further explore the triggering effect of solid tide stress on the mine earthquake, this paper takes the Huating coalfield mining area with the typical impact disasters in China as the research background, and uses the Schuster test method to carry out the statistical analysis of the change of the solid tide tide of the solid tide in the roof. The results are as follows: 1) 1) solid tidal stress has a significant trigger effect on the occurrence of mineral earthquakes, the frequency of ore earthquakes is perpendicular to the tidal stress, and there is a significant correlation between the phase angles of the East and the north and the horizontal shear stress components, and the P values of the Schuster test are less than the trigger threshold 0.05; 2) the tidal stress triggers different levels of the ore shocks. In difference, with the increase of magnitude, the occurrence of mine earthquake is changed from gravity control to tectonic stress control; 3) different types of triggering mechanical action for different types of mine earthquakes are different. For medium and small mine earthquakes with gravity control, the vertical component of tidal stress is maximum (compression), and when the horizontal component is least (pulled), the mine earthquake is easier to occur, and the large grade mine is controlled by tectonic stress. Earthquake is the opposite; 4) mine seismic activity will also cause distortion of borehole strain pattern in the relevant area.
【作者单位】：北京科技大学金属矿山高效开采与安全教育部重点实验室;
【基金】：国家自然科学基金重点项目(51534002)
【分类号】：TD32

【参考文献】