Abstract

In the Republic of Korea (ROK), photovoltaic power stations (PPSs) are typically installed in mountainous areas because of the low levelized cost of electricity values. However, intensified precipitation due to climate change has increased landslide occurrence, threatening PPSs installed in mountainous areas. Previous studies have focussed on the possibility of landslide occurrence considering specific years, which could not generate general landslide susceptibility areas (LSAs). Therefore, this study aimed to analyze the general LSAs and compare it with PPS-installed areas to identify the potential landslide damages to the PPSs. Gangwon-do was selected as the study site and maximum entropy model was used to evaluate LSAs in multiple target years (2006, 2013, 2019, and 2020). The results showed that 3.2–10.6% of PPSs are located in LSAs during 2013–2020. Considering the government PPS installation regulations, 45% of installable areas were identified as LSAs, suggesting that new criteria are required for future PPS installation. We propose that PPS installation should be prohibited in very shallow soil, very deep soil area, areas with good drainage capacity, a slope between 10 and 30°, north aspect, and coniferous forest area. Our results can help in improving the regulatory plans and prevent reckless development of PPSs in susceptible regions.

摘要

在大韩民国 (ROK)，光伏发电站 (PPS) 通常安装在山区，因为电力价值的平准化成本较低。然而，气候变化导致的降水加剧增加了山体滑坡的发生，威胁到山区安装的 PPS。以前的研究集中在考虑特定年份的滑坡发生的可能性上，这不能产生一般的滑坡易感区（LSA）。因此，本研究旨在分析一般 LSA 并将其与 PPS 安装区域进行比较，以确定 PPS 的潜在滑坡损害。选择江原道作为研究地点，并使用最大熵模型对多个目标年（2006、2013、2019和2020）的LSA进行评估。结果表明，3.2-10。2013-2020 年期间，6% 的 PPS 位于 LSA。考虑到政府的 PPS 安装规定，45% 的可安装区域被确定为 LSA，这表明未来 PPS 安装需要新的标准。我们建议禁止在土壤很浅、土壤很深的地区、排水能力好的地区、10°到30°之间的坡度、北向和针叶林地区安装PPS。我们的结果可以帮助改进监管计划并防止 PPS 在易感地区的鲁莽发展。排水能力良好的地区，坡度在 10 到 30°之间，北向和针叶林区。我们的结果可以帮助改进监管计划并防止 PPS 在易感地区的鲁莽发展。排水能力良好的地区，坡度在 10 到 30°之间，北向和针叶林区。我们的结果可以帮助改进监管计划并防止 PPS 在易感地区的鲁莽发展。