Dissertações em Gestão de Riscos e Desastres Naturais na Amazônia (Mestrado) - PPGGRD/IG
URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/9944
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Item Acesso aberto (Open Access) Análise de perdas econômicas geradas pela erosão em ambiente praiano: caso da praia de Ajuruteua – Bragança/PA(Universidade Federal do Pará, 2018) RODRIGUES, Hygson da Silva; LIMA, Aline Maria Meiguins de; http://lattes.cnpq.br/6572852379381594The beach of Ajuruteua-PA, 36 km from the municipality seat of Bragança-Pará, has undergone constant morphological transformations due to the process of marine erosion. Such erosions have been causing disasters during periods of full tide (equinox and syzygy). In addition, the lack of planning in the management of the use and occupation of the territory caused several environmental consequences and the quality of life of the population. The objective of this work was to estimate the economic losses directly and indirectly generated by water erosion, through the Cost of Replacement Method (MVCR), and to contribute to the actions of civil defense in dealing with natural disasters. It also aims to collaborate with the planning and actions of public policies in order to avoid further harm to the population at risk, as well as to propose improvements for environmental management, the issue of territorial reordering and the social confrontation related to natural disasters. A questionnaire and checklist applied to a random sample of housing units can assess the costs of losses and damages caused by the phenomenon, as well as the application of the MVRC to analyze the losses for recovery / reconstruction or the total loss of the property without the recovery of the damage. The results indicate that there are many attempts to contain erosion along the coastline of Ajuruteua Beach, but these do not provide definitive solutions to the problem. Therefore, it is necessary to consider measures that reduce the exposure to the risk of facing disasters and prevent losses or high costs with the recovery, reconstruction or reallocation of properties and families that are resident in the region. The average Replacement Cost (CR) of the 81 buildings located in the tidal range, considering the average Internal Unit Cost (CUi) of R$ 34.708,76 and the Average External Unit Cost (CUe) of R$ 43.388,63; was R$ 6.325.889,40. Indicating that socioeconomic losses can be significant, and should be rethought in the direction of the management of coastal space.Item Acesso aberto (Open Access) Análise do potencial de risco de rompimento em barragens de rejeito de mineração do Estado do Pará utilizando a metodologia Risk-Based Profiling System (RBPS).(Universidade Federal do Pará, 2018-05-30) CONCEIÇÃO, Raimundo Almir Costa; LIMA, Aline Maria Meiguins de; http://lattes.cnpq.br/6572852379381594The serious and very serious socioenvironmental disasters related to disruption in mining tailings dams have been exhibiting worldwide, a growing tendency since the 1960s and this is directly related to the increasing production of waste. In this context, there is a fundamental necessity for risk and safety analyzes of these dams, which can be done through methods that estimate the probability occurrence of disruption events, in order to make the decision to have a process more focused and safe. One of these analyzes is the so-called Risk-Based Profiling System (RPBS), which allows us to gauge, from qualitative data, the probability of a disruption and its probable consequences, which comes from the four most frequent scenarios (static, hydrological, seismic and operation and maintenance). This analysis was applied to six mining dams in the State of Pará, municipalities of Parauapebas, Paragominas and Canaã dos Carajás. The results showed, in the universe of analysis, dam B3 was the one with the highest failure rate (455.18), followed by the dam B1 (428.63) and the dam B2 (375,66). However, the dam with the highest risk for downstream areas was B2 with a Total Risk Index of 969.20 points, mainly due to the large number of possible people affected (12,900 people). This same dam is the one that would affect the greatest number of socioenvironmental components, defined then with possible cause of extreme damages. Compared with the risk analysis established in law, the RBPS analysis showed similarities, but more detailed in function of the four scenarios of analysis that will be generated, rather than just one. A risk analysis guide for dams was created as well, which came out from this present study.Item Acesso aberto (Open Access) Erosões urbanas para percepção de risco: o caso das voçorocas na cidade de Açailândia-MA(Universidade Federal do Pará, 2019-02-28) MIRANDA, Antonio Carlos da Silva; LIMA, Aline Maria Meiguins de; http://lattes.cnpq.br/6572852379381594The forms of land use and occupation without proper planning tend to generate several problems in the process of expansion of the cities, among them, mention is made of the emergence and acceleration of erosive processes, especially in places with natural vulnerability. This study aimed to characterize the urban erosions for the perception of the risks in the gullies in Açailândia-MA. The methodology used qualitative and quantitative analyzes to understand the origin of the urban erosion process (natural and / or anthropic); the evolution of these processes, by altering the natural landscape; the erosive effects resulting from natural phenomena, controlling factors and anthropic actions; the characterization of erosive features in the gully areas; and its classification as a disaster according to the Brazilian Code of Disasters - COBRADE. For the development of the methodology, two gullies were chosen, located in areas with distinct characteristics, one being located in the Barra Azul neighborhood, a transition zone from rural to urban (peri-urban) and the other in an urbanized area in the Açailândia-MA Center. According to the results found in the research it was possible to conclude that this voçoroca disaster is classified by the Brazilian Classification and Codification of Disaster - COBRADE in 1.1.4.3.3. When analyzing the origin, shape and size of the two gullies, historical data were considered for 12 years, relating the advance to each end of the rainy season. The origin of the craters is related to the interactions of the anthropic and natural factors. On the other hand, the shapes of the craters are different: the barrel of the Barra Azul neighborhood is branched and the one of the neighborhood of Centro has irregular shape, and the two gullies present their sizes classified as very large. The eroded volumes are above 40,000 m³. As a final product, a model of an Emergency or Contingency Plan for Geological Disaster Occurrences - PLANECON was prepared for the city of Açailândia (MA). The development of this allows during the crisis to develop the operationalization, the procedures and actions that should be taken, adapting them to objective planning, the hierarchy of response actions in the planning of decisions, the actual situation of the disaster during the occurrence, the use of Erosive Disaster Risk Management actions in the use of non-structural and structural measures by the responsible bodies.