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Seismological Monitoring of Rockfalls as a Tool to Study Weathering Processes at the Geoheritage Site Žebračka Mine in Mining District of Zlaté Hory (Czech Republic)
Geoheritage ( IF 2.3 ) Pub Date : 2021-04-20 , DOI: 10.1007/s12371-021-00563-x
Markéta Lednická , Radovan Kukutsch

Mining cultural monuments are very popular in the Czech Republic, and after the period of the mining activity reduction in the 1990s, when tens of mines were permanently closed, mining monuments are the last witnesses to mining activities in the areas. These are monuments of types of mine buildings, mining towers, and galleries. However, a monument that is beyond this list is the Žebračka Mine—a local sinkhole located in the Moravian-Silesian Region in the cadastral area of the municipality of Heřmanovice, but historically belonging to Zlaté Hory. It is not an old monument, but since it is a local sinkhole, it is changing as a result of weathering when the rock falls from the overhang and the side of the mine. Since 2013, the mine has been monitored by 3D laser scanning, and since 2003 by seismological monitoring. This monitoring proves that it is still a living monument. The study evaluates a unique data series of registered seismic events related to the effect of the rockfalls covering the period of 16 years. The mutual confrontation of seismological data with atmospheric conditions, namely, outside air temperatures and precipitation, enabled to reveal the long-term development of the rockfall activity and to determine the influence of specific atmospheric parameters. The results show that the most extensive rockfall activity occurs at temperatures oscillating around the freezing point and is thus primarily related to the freezing and thawing of water in fissures of weathered parts of the rock mass. Understanding these processes is essential for forecasting the possible development of the sinkhole in the coming decades and for all other planned activities at the site related to its opening to tourists. In addition, the knowledge gained from the research will provide valuable information for educational purposes for visitors to the site, to understand the weathering processes taking place there, and to understand the behaviour of the geological environment in the given climatic conditions. Moreover, visitors will learn about current methods of monitoring the stability of the rock mass in situ. The planned opening of the sinkhole to tourists will be reflected in the increasing attractiveness of the region and will attract many enthusiasts in the field of mining history and geology, not only from the Czech Republic but also from nearby Poland.



中文翻译:

采石场的地震监测作为研究ZlatéHory矿区(捷克共和国)Žebračka矿山地质遗迹风化过程的工具

采矿文化古迹在捷克共和国非常受欢迎,在1990年代采矿活动减少之后,数十座矿场被永久关闭,采矿古迹是该地区采矿活动的最后见证者。这些是矿山建筑,矿塔和美术馆类型的纪念碑。但是,Žebračka矿山是这个列表之外的一座纪念碑,Žebračka矿山是位于Heřmanovice市地籍区摩拉维亚-西里西亚地区的一个局部下水道,但历史上属于ZlatéHory。它不是一个古老的纪念碑,但是由于它是一个局部的污水坑,当岩石从悬垂物和矿山的侧面掉落时,由于风化作用,它正在发生变化。自2013年以来,该矿井已通过3D激光扫描进行了监控,而自2003年以来,已通过地震监测进行了监控。这次监视证明它仍然是一座活的纪念碑。这项研究评估了与16年的崩塌影响有关的已记录地震事件的独特数据系列。地震数据与大气条件(即外部气温和降水)的相互对抗,使我们能够揭示出落石活动的长期发展并确定特定大气参数的影响。结果表明,最广泛的落石活动发生在冻结点附近振荡的温度下,因此主要与岩体风化部分的裂缝中水的冻结和解冻有关。了解这些过程对于预测未来几十年可能发生的塌陷坑以及该地点与游客开放有关的所有其他计划活动至关重要。此外,从研究中获得的知识将为参观者提供教育方面的有价值信息,以了解该场所发生的风化过程,并了解给定气候条件下地质环境的行为。此外,参观者还将了解有关现场监测岩体稳定性的最新方法。计划向游客开放的污水坑将反映在该地区日益增长的吸引力中,并将吸引许多采矿历史和地质领域的爱好者,不仅来自捷克共和国,而且来自附近的波兰。

更新日期:2021-04-20
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