Abstract
The Nankai Trough earthquake is expected to occur with high probability in the near future. In the affected areas, urgent countermeasures are necessary. Furthermore, declining populations are prompting a re-evaluation of public facilities, leading to reductions in their overall quantity and relocations or reallocations in tsunami-prone zones. Municipalities expected to suffer significant damage in future disasters require urban development approaches that integrate urban planning, disaster prevention, and public facilities. This study focuses on Wakayama Prefecture, where damage from the Nankai Trough Earthquake is anticipated. Its objective is to clarify the processes for formulating administrative plans for urban development, disaster prevention, and public facilities; the processes related to the relocation or rebuilding of government buildings and the formulation of various plans; and the actual state of coordination and integration between these plans. Based on the planning status and new municipal building construction status of coastal municipalities in Wakayama Prefecture, we selected three municipalities: Kainan City, Gobo City, and Tanabe City. Through literature review and interviews with the municipalities, we examined the conditions of the urban areas and plan contents, the relationship between new municipal building construction and disaster prevention, and the interrelationships between the various planning documents. The results are as follows: We elucidated the relationship between urban development plans and disaster prevention plans. Future facility policies were determined based on utilization rates and the degree of deterioration. Within the plans for public facilities, policies considering disaster prevention were noted. Furthermore, for facilities serving as disaster response hubs, such as city halls and fire stations, there was a tendency to incorporate disaster prevention measures when reviewing building renewal plans.
