Author(s): Tetsuya Takeshita; Yoshimasa Morooka; Hideyuki Yamaji; Hisashi Kuronuma; Kanako Ozawa; Yuki Hamada

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Keywords: Digital twin; Testbed; River Basin; Resilience; Risk communication

Abstract: In view of the recent increase in the frequency and severity of water disasters, the policy "River Basin Disaster Resilience and Sustainability by All" is being promoted in Japan, in which various parties work together to reduce water disasters throughout river basins. In order to promote flood control throughout river basins, it is necessary to have smooth risk communication among parties involved in watersheds. For this, it is necessary for parties involved in watersheds to have bird's-eye views of entire watersheds, to intuitively understand the risk of water disasters and the effect of flood control measures, and to have a common understanding. From domestic and overseas cases, the utilization of digital twin technology that can reproduce vast watersheds on cyberspace is expected. However, for the development of technology that utilizes digital twin, it is necessary to compare and evaluate advanced elemental technologies of private companies and universities, integrate them as a system, and have a system that can be tested on site. In this study, we examined the development method of digital twin laboratories " Digital Testbeds for River Basin Disaster Resilience and Sustainability by All" that can reproduce the digital twin of river basins on cyberspace and develop visualization technology of the risk of water disasters and the effect of flood control measures in three dimensions. We summarized the development policy for each of the three components of basic data, analysis environment, and utilization of data. In addition, we conducted trial and consideration for the government officials, universities, private companies, and persons related to the watershed regarding the rainfall data utilization support program and the flood control evaluation index visualization program developed as part of the functions.

DOI: https://doi.org/10.64697/978-90-835589-7-4_41WC-P1807-cd

Year: 2025