ABSTRACT Disaster management requires the coordinated provision of multiple service facilities. Road networks play an important role in facilitating access paths to such services from settlements, particularly during flood disasters. The importance of a road depends on its utility along with its geospatial characteristics. In this article, we propose road importance measures that consider spatial properties, the serving utility and nature of interaction of the services. A multilayer graph-based approach is proposed for this purpose. The methodology includes different proposed metrics that are utilized to grade and identify optimal links of network access paths even in severe conditions. A case study is presented for a flood scenario with the associated services being relief shelters, relief storage centres and hospitals. It has been shown that the multi-layered approach provides a more realistic assessment of the road importance as compared to conventional link analysis. The identification of optimal road links helps in several mitigation and rescue strategies for disaster management.

中文翻译：

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用于洪水灾害管理的基于多设施的道路网络分析

摘要 灾害管理需要协调提供多种服务设施。道路网络在促进从定居点获得此类服务的通路方面发挥着重要作用，尤其是在洪水灾害期间。道路的重要性取决于其实用性及其地理空间特征。在本文中，我们提出了考虑空间属性、服务效用和服务交互性质的道路重要性度量。为此，提出了一种基于多层图的方法。该方法包括不同的建议指标，即使在恶劣条件下，这些指标也可用于对网络访问路径的最佳链接进行分级和识别。提供了一个针对洪水情景的案例研究，相关服务包括救济避难所、救济储存中心和医院。已经表明，与传统的链路分析相比，多层方法提供了对道路重要性的更现实的评估。确定最佳道路连接有助于灾害管理的多种缓解和救援策略。