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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Engineering geology model of the Crater Lake outlet, Mt. Ruapehu, New Zealand, to inform rim breakout hazard
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Engineering geology model of the Crater Lake outlet, Mt. Ruapehu, New Zealand, to inform rim breakout hazard

机译:火山口湖山的工程地质模型新西兰鲁阿佩胡,告知边缘突破危险

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摘要

Mt. Ruapehu, in the central North Island of New Zealand, hosts a hot acidic Crater Lake over the active volcanic vent with a surface elevation of c. 2530 m.a.s.l. Volcanic activity and other montane processes have previously resulted in catastrophic releases of some or all of the c. 10 Mm(3) of water retained in the lake, creating serious hazards downstream. A major lahar in March 2007 exposed a 10 m high face representative of the rock units impounding the lake, providing an opportunity to conduct both field and laboratory analysis to characterise the rock mass conditions at the outlet to assess the stability of the outlet area. This paper presents an engineering geology model of Crater Lake outlet. Our model shows three andesitic geological units at the outlet, each with different geological histories and physical and mechanical properties, which impact its stability.
机译:公吨。新西兰北岛中部的鲁阿佩胡(Ruapehu)在活跃的火山喷口上方拥有一个热酸性火山口湖,其表面高度为c。 2530上午火山活动和其他山地过程先前已导致部分或全部c的灾难性释放。湖中保留10 Mm(3)的水,对下游造成严重危害。 2007年3月的一次大型捕捞活动暴露了一个10 m高的代表湖面岩石单元的代表,这为进行野外和实验室分析提供了机会,以表征出口处的岩体状况,从而评估出口区域的稳定性。本文提出了火山口湖出口的工程地质模型。我们的模型显示了出口处的三个安山岩地质单元,每个具有不同的地质历史和物理机械特性,从而影响其稳定性。

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