The vunerable people to disaster are increasing in remote area. Furthermore, it is difficult to expect prompt external support. Therefore, In these areas, the importance of mutual assistance is high, and efforts such as voluntary disaster prevention organizations are important. In this study, a disaster prevention workshop was conducted for 11 communities in Kunigami village, Okinawa. Workshop conversation was converted to text data. This data was analyzed using a topic model. The analysis results in this model can clarify the concerns of each community. The differences in the interests of each community were clarified. Furthermore, the topic on evacuation is common, and the topic on support for vunerable people is large regional differences.

 This study aims to grasp the change of evacuation awareness at the time of disaster due to TFP difference.This research uses consciouseness data collected in Toshima, Tokyo and Minami, Tokushima. The simple TFP responds to the number of communication quetionnaires and affects the number of participants in disaster prevention traning and usual evacuation awarence. It has been confirmed that the length of the one-shot TFP implementation interval affects participation in evacuation training. The simple TFP has raised awareness of evacuation behavior during disasters. The one-shot TFP has shown that the length of the implementation interval may affect disaster preparedness.

 From the experiences of natural disasters in the past, in order to reduce the damage caused by large-scale disasters, it is becoming more important to improve the disaster prevention awareness of each resident. So, in this research, in order to examine the factor which raises disaster prevention awareness, a questionnaire survey was conducted for general students and students belonging to the disaster prevention activity group. As a result, it became clear that "the current sense of crisis" and "interest in disaster" in the disaster prevention awareness improve through participation in regional disaster prevention activities. In addition, it was suggested that the awareness of "other directionality" and "disaster imagination" could be improved by improving the evaluation and attachment to the are.

 In disasters, some areas are damaged hugely, but other areas are not damaged. However, some of them can have high disaster potential. We call such cases “Potential cases”. Continuous heavy rainfall in July in 2018 in Japan caused huge damages in various areas. We had a survey in this Potential case. The southern area of Kyoto city had damaged very little. However, this area had high disaster potential by some simulations. We had two kinds of surveys in this area; one is a questionnaire for residents in Shimotoba by the community and the other is WEB one for residents around the rivers in southern area of Kyoto which is influenced by the floods.

 We check disaster consciousness and evacuation situation in the disaster mentioned above. Moreover, if the residents are indicated that their areas had high disaster potential and you may had been damaged by the floods, we check how they consider their action against the floods and change their evacuation willingness. From results, some residents indicated the changes and they have some characteristics on “sensitivity of disasters” and “understanding of some disaster treatments” and so on.

 Disaster potential can efficiently work to change optimistic opinions against the disasters of some residents. We need to continue researching disaster potential in communities.

 In Japan, the flood hazard maps have been established and have been distributed to residents in order to reduce dameges due to severely floods by the regional governments. However, the inundation depth is utilized for the expression on present flood hazard maps mainly. Actualy, as the inundation has accompanied with flow velocity, these is a strong possibility that the evacuees can not walk in the inundation area even if small water depth. On the other hand, in the case of the inundation by slow degree, as it is considered that the evacuees by walking can not become aware of underwater objects which are a curbs steps, ditchs and so on in muddy flood water, the ambulation in muddy water will endanger evacuees. Therefore, it is considered that the expressions of present flood hazard maps in Japan are insufficient. In this study, the point of insufficient expression for present flood hazard maps is indicated. Also, the method of expression to improve present flood hazard maps is investigated.

 Ensuring the safety and relief of residents from potential tsunami damage caused by a Nankai Trough earthquake is a pressing issue for the national and local governments. As a solution to this problem, there is a way to designate disaster hazard areas and it is a necessary condition for a project system to promote group residential relocation for disaster prevention. We studied the designation of disaster hazard areas as a case study in Anan City, Tokushima Prefecture, where tsunami damage from a Nankai Trough Earthquake is expected.

 First, we conducted a literature survey on the disaster hazard areas that were designated after the Great East Japan Earthquake, and classify them. Next, we analyzed changes in disaster hazard areas by simulation of Level I and Level II tsunamis. Based on these results, we proposed measures to smoothly designate hazard areas according to the tsunami damage situation.

 Kobe City has designated the old trees that have been seen for a long time and forests that give grandeur and comfort as "Citizen's trees and citizens' forests". In this study, firstly, we conducted field surveys to understand the state of trees, and questionnaire surveys to know the ecosystem services of trees and disaster history. In addition, spatial information analysis was conducted to grasp natural disaster risk using national land information data. As a result, it was clarified that the characteristics of trees were utilized from the past disaster history and there were cases that led to disaster reduction. In addition, it was found that those trees mainly provide ecosystem services such as recreation sites, inhabiting and growing environments for living things.

 The probability of occurrence of Nankai Trough earthquake is said to be 70 to 80% in the next 30 years. In Shikoku region where massive damage is expected, appropriate disaster prevention measures are needed according to the regional characteristics. In many remote islands, population declines and aging progresses and there is concern about non-residentialization. Furthermore, the current situation is that disaster prevention measures are delayed due to the influence of geographical and social issues.

 In this research, with regard to the issues and countermeasures for disaster prevention measures in remote islands, we analyze cases of islands with no industrial foundation and islands with industrial foundation, and describe the ideal way of disaster prevention countermeasures in remote islands.

 In this paper, the research clarified utilization of community disaster management plan system in flood high risk area. At the heavy rain disaster on July 2018, flood depth recorded over 5 meters in Mabi-cyo Kurashiki city. Casualitys were 51, about 80%of people aged 70 years or older and 44 out of 51 died at their home.

 The unstructured interview survey revealed the rescue activities of users conducted by small-scale multi-functional offices in Mabi-cho.

 The goal of this paper is to propose utilization of community disaster management plan system in flood high risk area.

 In Japan, maintaining infrastructure by current way will be difficult due to the low birth rate and longevity and aging of infrastructure. In addition to that, risks for the natural disasters in several regions in Japan is also concerned in recent year. Therefore, protecting human life is expected to be impossible against natural disaster. However, there is not yet enough consideration of disaster prevention value in the current road evaluation. Infrastructure in rural or maintenance area is necessary without excess or deficiency by accurate evaluation method to existing roads. On the other hand, there is a case for which a forest road was used as evacuation route when the natural disaster occurred, however there are few studies which try to estimate the value of forest road as arterial road. If forest road is included to arterial road network in same data set, routes which should be connected and maintained with arterial road network can be identified. Procedure of this study is to first build a heterogeneous road network data. Then, the disaster, population and road information on the road network data is combined. after that, network is analyzed based on graph theory and created an preparation improvement plan. As a result, it was found that considering the forest road prevents the isolation of the village in the area when the disaster occurs, and the forest road has disaster prevention value. this study is considered the way of road improvement in the future by adding the forest road to the road network.

 The authors collected agreement documents (hereinafter, disaster agreement) on emergency work at the time of disaster that 47 prefectures and each construction industry association concluded, and analyzed the state of description of the disaster compensation regulations. As a result, there were 32 agreements with descriptions of provisions of damage compensation, including labor accidents, 4 agreements with descriptions of provisions of damage compensation to third parties and equipment etc., and 11 agreements without such descriptions. In other words, it was found that the disaster agreements concluded by many local governments and the Japan Construction Industry Association did not unify the handling of damage compensation for an accident etc., that occurred during an emergency relief operation at the time of a disaster.

 In addition, the authors conducted interview surveys with officials of the Ministry of Land, Infrastructure, Transport and Tourism, Shikoku Regional Development Bureau, the National General Contractors Association of Japan, and the General Contractors Association of Tokushima in order to understand labor compensation in a disaster emergency situation in detail. The following two points became clear as a result of hearing investigation. (1) The Tokyo Metropolitan Government recognizes specific issues concerning compensation amount, and (2) MLIT is making preparations to newly reflect workers' compensation premiums on the budget for ordering emergency relief operations.

 Based on the above results, this paper presents the ideal way of compensation for labor and disasters at the time of disaster emergency relief operation.

 We proposed Safeguarding Supportive System (SSS), which has been newly established in our laboratory for risk reduction measures for contact disaster etc. at Integrated Manufacturing System (IMS) in Japan. The SSS system was applied to a tunnel construction site in the present study. We examined effectiveness of the SSS in the tunnel construction site. The SSS is a novel safety management system containing a combination of the ICT equipment focused on residual risk after 3-step method, which is the risk reduction method scandalized by Safety of machinery-General principles for design-Risk assessment and risk reduction of International Scandalization Organization (ISO) 12100. ISO12100 In the present experiment, we used a location detection system with a 3D laser radar to the SSS and examined the ability of the system at a tunnel construction site. The results of the present study indicated that location of tunnel construction workers and construction machines was able to be measured by the behavior monitoring system used in the present study. However, the measurement was analyzed with recorded data. It is necessary to develop some kind of real-time measurement system in the further research.

 In recent years, large-scale natural disasters have frequently occurred in JAPAN, causing serious damage, so the role played by the construction companies in the region is becoming increasingly important for local communities to recover their daily lives after disasters occur. It is important to formulate BCP in advance and create the system that can exert its power in the recovery and reconstruction of the company operations and the local community when disaster will occur. Therefore, we conducted a BCP questionnaire survey for construction companies of the Hokkaido Construction Industry Association. As a result, it was found that the BCP formulation rate was 38%, slightly lower than the national average, and that there were differences due to regional differences and company size. We discuss issues and necessary measures for improving the formulation rate in the future and for expressing the functions in the event of disasters.

 The estimated tsunami inundation area in the coastal region was changed after the revision of Tsunami prevention region development law, 2012. By contrast, since aging society and population decline have been more serious in local cities, it is necessary to promote the concentration of urban facilities to maintain the efficiency of the city.

 The objective of this study was to discuss how to implement residential relocation measures on the basis of the survey of resident’s consciousness. A case study city is Kochi, where most of the central area is estimated to be a tsunami inundation area. First of all, resident’s consciousness of the revision of hazard-map from the perspective of disaster risk and city planning was analyzed. Then, the resident’s consciousness of disaster risk from the viewpoint of location and building condition was examined. Furthermore, the factor for choosing housing and the awareness of public project for disaster prevention were considered.

 Result clarified that it is urgent to implement a disaster prevention measure in the estimated tsunami inundation area as soon as possible to encourage citizens to live in the central city area.

 In the Urban Master Plan for Location of Residential and Urban Functions, the concrete designated standard of the house guidance area is not shown. The judgment materials and standard have a part entrusted to each local government. The area having concern in the disaster prevention is no exception, too, and it is entrusted to the judgment of the local government about the handling of the area having a disaster risk. Object of the study is the local government which appointed a residence guidance area. It arrange a regional handling method having the risk of the disaster in the area designation. And it was aimed for that it clarify the main point to appoint a residence guidance area. As a result of this study, need to determine the handling method of the inundation assumption area by law and a guideline was shown. In addition, in the local government, the need of the handling depending on an inundation area and inundation depth became clear.

 The Bridge maintenance plan is formulated taking into consideration the deterioration factors that affect the durability of the bridge and the environment and usage conditions. However, it is up to the local government to decide how much the natural disaster risk is considered. From the point of view of natural disaster risk, it is useful to refer the repair plan information of the local governments with similar environment and usage conditions among the local governments when improving the repair plan. In this study, it will be calculated unified natural disaster risk indicators that can be reflected in the bridge maintenance plan for each prefecture. Natural disaster risk indicators are expressed as a combination of exposure, vulnerability and resilience. By referring to this unified index, it is possible to compare the degree of impact of natural disaster risk in the bridge longevity repair plan of the concerned maintenance management organization with other local governments. And it is expected to be effective in the review of repair plans from a new perspective such as improvement of resilience.

 Recently, asset management systems have become the powerful tool that is able to lead to an effective maintenance strategy of civil infrastructures. In the system, it has been applied to estimate the deterioration of infrastructures. However, there are few studies of deterioration prediction considering event risk such as earthquakes. This paper proposes the method as the prediction model for event risk to simplified dynamic macro model predicting the natural deterioration of a set of tunnel lighting facilities.

 Firstly, it is expanded to apply the model to predict the deterioration for event risk using real seismic damage ratio in addition to natural deterioration. Then, it is calculated the ratio of the restoration health degree to the restoration cost using as the indicator of cost-effectiveness degree in the immediate restoration.

 Finally, it considered the applicability for the prediction model including the event risk to natural deterioration on risk management as new asset management.

 A large-scale sector collapse occurred on Anak Krakatau Island in Indonesia in December 2018. The tsunami caused by sector collapse caused a serious damage to the coastal area. In this study, the interpretation investigation of topographic change by volcanic activity and sector collapse and extraction of tsunami damaged area in the coastal area were evaluated using observation information by Sentinel-2 satellite, Landsat-8 satellite, and Sentinel-1 satellite. The topographic change of Anak Krakatau island was effectively evaluated by using optical and SAR satellite images together. The tsunami damage area of the surrounding coastal area was extracted from the NDVI values before and after the disaster where the cloud cover area was corrected. It was appropriately evaluated by referring to the visual interpretation results. In addition, the interpretation characteristics and availability to tsunami disasters were evaluated by MTC images. It was considered that this method was effectively used from these results to evaluate the schematic in large-scale disaster.

 In recent years, huge damage with human damage that were caused by abnormal weather phenomena has occurred and it is required to ensure safety. Based on this situation, The Ministry of Land, Infrastructure, Transport and Tourism is setting of sediment disaster warning area as one of the measures. It is required to streamline these works for continuous implementation, because these works are very time-consuming and labor-intensive.

 In this study, we aimed at automation and efficiency of setting of sediment disaster warning area using deep learning technology that has achieved high results in various fields of image processing. As a result, we were able to estimate with high accuracy the high risk area of damage from sediment disasters, and to show the effectiveness of the proposed method for automation and efficiency.

 In case of evacuation in an underground mall, evacuation routes originate in shops and halls and terminate in the access areas of stairs to walkways. In this research, shop layout and access area environments are considered and evacuation simulation was performed for an underground mall called ESCA located in the west region of Nagoya Station. It was found that by setting up regions where evacuees are not allowed to stand still and goal lines that early evacuees are encouraged to reach, smooth and trouble free evacuation can be realized.

 The plan to maintain green in the town is attractive plan from the viewpoint of landscape and the control of heat island phenomenon. In addition, green is said to have the effect of delaying and preventing the spread of fire. For example, burns due to green have been reported in numerous actual fires. In this study, based on the literature on the shielding power of trees, we developed an interface of the data input part of green such as evergreen trees, deciduous trees and hedges. Specifically, we classified the parameters that make up trees, and developed a data input creation system that takes into consideration tree species and tree shapes. Finally, using the developed system, we evaluated the effects of existing greenery, placement of hedges, setback, removal and planting of vacant houses, and tree planting around open spaces in Chigasaki City, Kanagawa Prefecture. As a result of them, it became clear that the existing greenery has a great effect of preventing the spread of fire. In addition, it was able to quantitatively and visually show that the fire spread delay prevention effect by the arrangement of hedges is also large.

 In order to take appropriate actions during a disaster, it is important to develop practical disaster response capabilities. We developed a training simulator aimed at developing practical disaster response capabilities.

 In this study, we analyze the behavior characteristics of the experimenter based on the training video recorded in the training. Specifically, we arrange the behavior and statement contents of the experimenter in training in a tabular form, and discuss characteristic behaviors. We also consider basic disaster compytencies for evacuation training method proposals tailored to individual characteristics.

 In order to decrease of inequalitie against insurance system between households, the insurance system from receive to collection was considered by the group division according to damage amount of the inundation inside levee. The distribution between annual average damage and the number of households was obtained by flood economic damage through flood analysis and flood control economic research, in Tokushima prefecture. This distribution quantifies such inequalitie, when the insurance system through receive and collection are determined. When the groups is divided according to the damage amount, the insurance system through the group division contributes to less inequalitie. This less inequalitie occurred both in determining the insurance maximum receive and in changing the insurance collection.

 In the Kanto and Tohoku heavy rain event in September 2015 and the heavy rain event in July 2018, serious flood damage occurred due to floods, and many medical institutions suffered flood damage. In these medical institutions, the medical service function was stopped, and there were cases in which inpatients had to be transferred to another hospital. Countermeasures for flood disasters in medical institutions are important issues for medical continuity.

 We conducted a questionnaire survey on the implementation status of disaster prevention measures for medical institutions in Tokushima prefecture. From the survey results, it was found that measures such as evacuation training and BCP formulation for inundation disasters were not advanced. We conducted interview surveys on the response from the initial response to the resumption of medical treatment for hospitals that were flooded and damaged by heavy rain. From this result, we considered measures and ideas to be tackled in order to realize an early recovery from flood damage.

 In this study, the operation situation of the Seiyo disaster relief volunteer center (Seiyo VC) was investigated in Nomura Town, Seiyo City, which was flooded by heavy rain in July 2018. We conducted an interview survey on the management of VC for staff of Seiyo City Council of Social Welfare. From this survey, we examined the characteristics of the operation method of VC and the problems in operation. It was found that the VC administration for three months worked well because the staff of the social welfare council and others did not lose the view point of the community welfare practiced as daily work and the cooperation of the external support group.

 Objective one of the refuge administration at the time of the large-scale disaster reduces the physical and mental damage of refuge inhabitants as much as possible and are that inhabitants enable the life rebuilding at early time. However, a start of restoration, the revival of local inhabitants became slow because various unexpected situations occur, and administration and the correspondence of inhabitants were late at the time of Kumamoto earthquake. In this study, we analyze problems in the refuge administration from past questionary survey and report and clarify the bottleneck that became the trouble. Furthermore, we clarify a problem of the refuge administration at the time of the unexpected disaster from the viewpoint of resilience engineering. The feature of resilience engineering is that it has four characteristics such as robustness and redundancy etc. before the occurrence of a disaster, and exhibits four kinds of abilities such as the coping skill and the foresight ability etc. in during / after a disaster. Proposals were made regarding effective shelter management such as Shelter facility robustness . We proposed effective shelter management for the robustness of shelter facilities and the understanding of technicians in the area etc..

 Recently, aeromedical services by helicopter have been coming into widespread use at scenes of emergency medical transportation in Japan. Previous research has examined rendezvous point placement planning for helicopters with traditional voronoi division and road network voronoi division in regions with high density road networks. In this study, to examine the usefulness and transfer possibility, we applied those methods to a region with a low density road network, and checked acceptable populations for rendezvous points. From the result of a two-analysis method in a region with a low density road network, it became clear that the acceptable population of rendezvous points differs. The coefficient of variation for acceptable populations in particular differed between the results in regions with high and low density road networks. We found that road network voronoi division is suitable for checking the acceptable population of rendezvous points in regions that include low density road networks. In addition, it is important to use those methods for disaster response facility placement plans depending on the condition of the region with consideration of the density of the road network.