摘要：自1927年以来，印度尼西亚苏拉威西中部就有地震和海啸的记录。2018年的最后一次海啸冲刷海岸线不超过五分钟。本研究的目的是通过三种不同的网络分析方法来确定疏散距离:现有的方法(现有的道路网络模型)，提出的联合虚拟网络模型，以及以真实世界的疏散路线作为标准参数。本研究包括四个步骤：构建三种类型的网络，确定起点和终点（O-D）点，运行解算器，最后比较每种方法确定的距离。所有的网络构建和分析都使用ArcGIS网络分析工具中的最接近设施求解器。在印度尼西亚帕鲁开展的这项研究具有不同的特点，表明使用组合虚拟网络模型的疏散距离方法更接近真实世界的疏散距离；与真实网络模型相比，分析的20条路由中只有一条没有显示出最佳性能。另一方面，现有的道路网络模型显示有两条路线偏离由组合网络模型确定的路线，这意味着该方法在测量疏散距离方面的性能较弱。
关键词：TES，网络分析，六边形截断法，疏散距离
Abstract:Earthquakes and tsunami affecting Central Sulawesi, Indonesia have been recorded since 1927. The last tsunami in 2018 washed the shoreline for not more than five minutes. The objective of this study is to determine evacuation distance by using three different methods of network analysis: the current method (existing road network model), the proposed combined virtual network model, and the real-world evacuation route which is used as the standard parameter. This research includes four steps which are: building the three types of networks, determining the Origin and Destination (O-D) points, running the solver, and finally comparing the distances determined by each method. All of the network builds and analyses use the closest facility solver within the ArcGIS network analysis tools. With different characteristics, this study, carried out in Palu, Indonesia, shows that the evacuation distance method using a combined virtual network model is more closely resembles real-world evacuation distance; only one out of 20 routes which were analysed did not show the maximum performance compared to the real-world network model. On the other hand, the existing road network model shows two routes deviating from the route determined by the combined network model, meaning a weak performance of the method in measuring the evacuation distance.
Key:TES, Network Analysis, Hexagon Tessellations, Evacuation Distance
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