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首页> 外文期刊>Acta Geophysica Polonica >A SEARCH FOR SEQUENCES OF MINING-INDUCED SEISMIC EVENTS AT THE RUDNA COPPER MINE IN POLAND
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A SEARCH FOR SEQUENCES OF MINING-INDUCED SEISMIC EVENTS AT THE RUDNA COPPER MINE IN POLAND

机译：波兰RUDNA铜矿矿山诱发地震事件序列的搜寻。

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摘要

A detailed analysis of the Rudna copper mine's seismic catalogue for 1980-2003, with a threshold local magnitude M_L ≥ 1.3, allowed to distinguish several types of event sequences related to 345 stronger mining events of magnitude greater than 3.0. Events without aftershocks and foreshocks were observed as well as those where the number of aftershocks numbered more than ten, while foreshocks - several. Foreshocks were recorded for 58 events, nearly all of them several tens of minutes before the main seismic event. Aftershocks accompanied the 190 strongest events; the greatest number of aftershocks was 10 for an event of magnitude just over 3.0. For the two strongest events, of magnitudes M_L = 4.1 and M_L = 4.2, the number of aftershocks was radically different, 9 and 1, respectively. Different numbers of aftershocks were observed depending on the location of the main event in various mining areas, which is related to the differences in the seismicity of individual zones within the mine. Non-parametric probability distribution functions of magnitude have been determined for the different seismogenic zones. In addition, the value of the b coefficient of the Gutenberg-Richter relation has been analyzed for each zone. These studies confirmed that seismicity varies within the mine.
机译：对Rudna铜矿1980-2003年地震目录的详细分析，阈值局部震级M_L≥1.3，可以区分与345个大于3.0的更强采矿事件相关的几种事件序列。观察到没有余震和前震的事件，以及余震数量超过十次而前震-数次的事件。记录了58次地震的前震，几乎所有地震都发生在主要地震事件发生前的几十分钟。 190次最强烈的事件带来余震；对于一次超过3.0级的事件，最大余震次数为10次。对于两个最强烈的事件（震级M_L = 4.1和M_L = 4.2），余震的数量根本不同，分别为9和1。根据主要事件在各个矿区的位置，观察到不同数量的余震，这与矿井中各个区域的地震活动性差异有关。已为不同的地震发生带确定了大小的非参数概率分布函数。另外，已经针对每个区域分析了古腾堡-里希特关系的b系数的值。这些研究证实了矿山内部的地震活动性有所不同。

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