The site of the Ishigaki New Airport had several karstic caves, which crosses the runway at several locations. The bats in these caves were claimed to be precious species, the Okinawa Prefectural Government decided to construct the reinforced protection arch structures above the caves against their possible collapses. The authors carried out a series of computations using 2D and 3D numerical methods to check the static and dynamic stability assessment of natural underground openings with its protection arch structure. In this article, the authors would present the outcomes of the numerical studies and discuss their implications.
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机译：Ishigaki New Airport的网站有几个岩溶洞穴，在几个地点穿过跑道。这些洞穴中的蝙蝠被声称是珍贵物种，冲绳县政府决定在洞穴上方构建洞穴上方的加强保护拱结构，以防止其坍塌。作者使用2D和3D数值方法进行了一系列计算，以检查天然地下开口的静态和动态稳定性评估及其保护拱结构。在本文中，作者将展示数值研究的结果并讨论其影响。
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