scholarly journals AVALIAÇÃO DA SUSCEPTIBILIDADE À EROSÃO E AOS MOVIMENTOS DE MASSA NO MUNICÍPIO DE IBIRITÉ

2014 ◽  
Author(s):  
Patrícia Mara Lage Simões ◽  
Cristiane Valéria Oliveira

O processo de urbanização e as alterações do meio físico decorrentes do uso do solo constituem um fator gerador de problemasambientais. A concentração populacional aliada à falta de um planejamento de ocupação tem motivado o uso inadequado do espaçourbano, provocando a ocorrência de sérios desequilíbrios ambientais. Esses desequilíbrios quando ocorrem em áreas com característicasfísicas impróprias à ocupação, como aquelas cujas condições ambientais, resultantes da combinação de fatores geológicos,geomorfológicos, pedológicos e topográficos, dentre outros, favorecem a ocorrência de processos erosivos e movimentos de massa. Estetrabalho tem como objetivo avaliar os fatores que interferem na definição da susceptibilidade a erosão e movimentos de massa nomunicípio de Ibirité/MG. Foram analisados os seguintes fatores condicionantes: características geológicas, morfologia; e também os fatoresdeflagradores provocados pela ação antrópica. Por meio dessa análise foi produzido um mapa identificando as áreas de maior e menorsusceptibilidade á erosão e movimentos de massa. O município apresenta a maior parte de seu terreno com moderada susceptibilidade,sendo assim, o uso do solo deve ser planejado para que a ocupação seja adequada de forma a minimizar o risco de ocorrência de processoserosivos e movimento de massa. O poder público deve fiscalizar essa ocupação, verificando se existe a presença da infra-estruturanecessária nos loteamentos.Palavras-chave: SUSCEPTIBILIDADE A EROSÃO, MOVIMENTO DE MASSA, PROBLEMAS AMBIENTAIS ABSTRACTEVALUATION OF SUSCEPTIBILITY TO EROSION AND MASS MOVEMENTS IN THE MUNICIPALITY OF IBIRITE. The process ofurbanization and changes in the physical environment resulting from land use are a key driver of environmental problems. The populationdensity and lack of planning occupancy has motivated the inappropriate use of urban land, causing the occurrence of seriousenvironmental problems. These problem when occur in areas with physical characteristics inappropriate for occupation, as those whoseenvironmental conditions come from the combination of geological, geomorphological, pedological and topographical factors, amongothers, favor the occurrence of erosion and mass movements . This study aims to assess the factors affecting the definition of susceptibilityto erosion and mass movements in the municipality Ibirité / MG. The following conditioning factors were analyzed: geological,morphological characteristics; and also the trigger factors caused by human action. Through this analysis was produced a map identifyingareas of high and low susceptibility to erosion and mass movements. The city has most of its terrain with moderate susceptibility, thus theland use should be planned so that the occupation need to be adequate to minimize the risk of erosion and mass movement. Thegovernment should monitor this occupation, checking if there is presence of the necessary infrastructure.Keywords: SUSCEPTIBILITY THE EROSION, MASS MOVEMENTS, ENVIRONMENTAL PROBLEMS

2021 ◽  
Vol 13 (6) ◽  
pp. 3272
Author(s):  
Paúl Carrión-Mero ◽  
Maribel Aguilar-Aguilar ◽  
Fernando Morante-Carballo ◽  
María José Domínguez-Cuesta ◽  
Cristhian Sánchez-Padilla ◽  
...  

In the last decade, in the mining district of Zaruma-Portovelo, there has been significant land subsidence related to uncontrolled mining activity. The purpose of this work was to carry out a surface and underground geomechanical characterization of a mining sector north of the city of Zaruma that allows the definition of potentially unstable areas susceptible to the mass movement. The methodology used consists of the following stages: (i) compilation of previous studies; (ii) surface and underground characterization of rocky material to establish its susceptibility to mass movement; (iii) interpretation of results; and (iv) proposal of action measures. Among the most relevant results, it stands out that 26.1% of the 23 stations characterized on the surface present conditions that vary from potentially unstable to unstable. In underground galleries, the studied mean values of the 17 stations indicate that the rock has a medium to good quality, representing a medium susceptibility to gallery destabilization. The results obtained for the surface areas (depths up to 50 m, where altered materials predominate) and the underground areas (depths > 50 m, where the alterations are specific) can be used to identify the areas with a more significant potential for instability. For both cases, it has been possible to define specific monitoring, control, and planning actions for sensitive areas.


2016 ◽  
Vol 9 (2) ◽  
pp. 456
Author(s):  
Eduardo Samuel Riffel ◽  
Laurindo Antonio Guasselli

Este trabalho consiste em um estudo realizado no município de Três Coroas - RS. Foram analisadas as ocorrências recentes de movimentos de massa e sua relação com as zonas de risco estabelecidas pela CPRM. A partir de parâmetros morfométricos, buscaram-se identificar os padrões de ocorrência de deslizamentos. Também buscou-se analisar a contribuição da ocupação para tais ocorrências, incluindo outros fatores que estão relacionados a movimentos de massa. A partir do padrão de ocorrência de movimentos de massa identificados no município, foi feito um mapa de áreas suscetíveis a movimentos de massa, dividido em 3 classes: alta, média e baixa suscetibilidade, e foi relacionado com as áreas de risco do município. Observou-se que algumas das ocorrências estão localizadas em áreas de vertentes côncavas e encostas íngremes, com exceção das que têm influências antropogênicas, que estão localizados em encostas convexas. Um fato que pode ser explicado pelo tipo de ocupação de área, que ocorre principalmente em pistas convexas e encostas íngremes, influenciada pela topografia da região. Pode-se também ver uma lista de ocorrências de deslizamentos de terra que resulta em áreas sensíveis para as áreas de risco estabelecidas pela CPRM, explicado pelo fato de que as ocupações geralmente se dão em áreas de alta declividade.   Abstract This work consists of a study conducted in the municipality of Três Coroas – RS. Recent occurrences of mass movements and their relationship to the risk areas established by CPRM were analyzed. From modeled geomorphological maps, geomorphological units, slope and altimetry, we sought to identify patterns in the occurrence of landslides. Also aimed to analyze the relationship of the occupation to the occurrence of such disasters, including other factors that are related to mass movements. From the pattern of occurrence of mass movements identified in the county, was made a map of susceptible to mass movement areas, divided into 3 classes: high, medium and low susceptibility, and it was related to the risk areas of the municipality. It was observed that some of the occurrences of mass movements are located in areas of concave slopes, and steep slopes, except for occurrences that have large anthropogenic influences, which are located on convex slopes. A fact that can be explained by the type of occupation of the area, which occurs mainly in convex slopes and steep slopes, influenced by the topography of the region. One can also see a list of occurrences of landslides and results areas as susceptible to the risk areas established by CPRM, explained by the fact that the occupations will generally give in areas of high slope. Keywords: Risk Areas. Mass Movements. Remote Sensing.     


Author(s):  
P. Redweik ◽  
R. Matildes ◽  
F. Marques

<p><strong>Abstract.</strong> Due to their relevance to the environment and economy, coastal areas are considered national strategic segments that should be preserved. Since erosion phenomena occur intensively in those areas, it is capital to monitor them in order to identify risk zones. In addition to national and regional studies, it is also necessary to conduct local monitoring of erosion prone areas, especially those which are often frequented by people, such as beaches limited by high cliffs. Large scale vertical mapping is necessary to model their susceptibility to mass movements, in order to provide adequate prevention, protection and assistance.</p> <p>Recent techniques like laser scanning or aerial photogrammetry using UAVs allow the definition of the status quo of a cliff wall and its situation a few years back. But to assess the susceptibility to rock mass movements in such cliff segments, inventories of past events are of primordial importance. These inventories allow applying several statistic models to better understand susceptibility together with a set of variables of internal and external nature regarding the cliff site.</p> <p>We present a case study focused on the beach of Ribeira d’Ilhas (Mafra, Portugal), where a workflow of terrestrial photogrammetry for present day situation and recovery of old analogue stereoscopic pairs (1999, 2000, 2003) was implemented. A mass movement inventory (1999-2014) was compiled by multitemporal comparison followed by a detailed characterization of the cliff using a GIS software. Finally, the application of the logistic regression method allowed the definition of a susceptibility map of the cliff wall towards the occurrence of mass movements.</p>


2016 ◽  
Vol 42 (1) ◽  
pp. 70-79 ◽  
Author(s):  
Ramón PICO

Spring 1935. After twenty-five years of fascination for heights and six of flying, stimulating experiences, Le Corbusier published Aircraft, a real “Manifesto for a New Era”, according to his own words. Even though Vers une architecture had limited the aeronaoutic model validity to the framework of housing and easthetics ten years before, the reference then was expanded to the city and its fitting within the natural framework, to the definition of a new global habitat in which public space became the focus.The flying experience allowed him to look into the past and find the subtle balance of man and nature. Revelation and rebellion at the same time. Thanks to the new visual as well as mental perspective provided by height, he would drive his reflec-tions towards “geoarchitecture”, a definitive, Humboldtian approach to Earth.His aerial observation of the Algerian M’Zab valley or the layout of the settlements along the Paraná crystallised both into texts such as Sur les quattro routes, Aircraft or Les trois établissements humains, and a series of proposals for Rio, São Paulo, Montevideo, Buenos Aires and Algiers. Epic adventures through which, and connecting with the interest of those geographers worried about reclaiming human action on the writing on the Earth through his “establishments”, Le Corbusier tackled the configuration of a new public space beyond the limits of the traditional city, claiming for a new planetary order.


Author(s):  
Maria Gagliardi

The morphological approach in the reading of the Territorial City Maria Gagliardi Escuela Técnica Superior de Arquitectura de Barcelona, UPC. Av. Diagonal, 649. 08028 Barcelona E-mail: [email protected] Keywords (3-5): Territorial city, territorial grid, accumulation process, relief of innovative elements. Conference topics and scale: City transformations     The crisis of the traditional city, with its morphological characteristics, has been largely debated. The new urban phenomenon has almost always been described as antithetical; by contrary this article interrogates the possibility of reading a continuity between the traditional and the contemporary city. The article brings forth the concept that the territory can be described as an urban phenomenon result of a change of scale of the city, and offers the definition of the contemporary city as Territorial City (Città-Territorio). The article recovers this term introduced in the 70’s by the Italian morphological school, to emphasize the continuity with the European traditional morphological schools, taking advantage of its learnings, to compare the traditional city, with the contemporary city. The relevance of a morphological approach in the study of the contemporary Territorial City is discussed through an excursus of the main European schools’ contributions, with a particular schematization due to geographical areas. From the synthesis of these references emerges a basis for the definition of a Taxonomy organised around tree main elements that constitute the urban grid. Moreover, the article proposes a methodology for the analysis of the Territorial City that use the Taxonomy as reading tool; this method, illustrated through his experimentation on the Metropolitan Region of Barcelona, is of particular relevance towards the interpretation of the dynamics that have characterised the morphology of the current urban phenomenon, describing its aggregation logics and decomposing the historical-procedural continuum.     References Caniggia, G., &amp; Maffei, G. L. (1979). Composizione architettonica e tipologia edilizia - Lettura dell’edilizia di base. (Venezia: Marsilio). Conzen, M. R. G. (1960). Alnwick, Northumberland: A Study in Town Plan Analysis. (London: Institute of British Geographers). Hillier, B., &amp; Hanson, J. (1984). The Social logic of space. (Cambridge: Cambridge University Press). Gagliardi, M. (2016). La Nuova Trama Territoriale: morfogenesi e logiche aggregative. Il caso di Barcellona (settore della Regione Metropolitana tra Sant Martì e Matarò). (Doctoral dissertation) Universitat Politecnica de Catalunya - La Sapienza Università di Roma. Dir. Font Arellano, A.; Bianchi, G. 


2018 ◽  
Vol 21 (10) ◽  
pp. 105-112
Author(s):  
N. G. Komуkh

The article deals with the problems belonging to the scientific field of social ecology, which is the branch of sociological knowledge. In particular, issues of the state of the city environment and public opinion regarding ecological problems are considered, on the example of the city of Dnipro. The basic methodological principles of research: the principle of co-evolution and the key positions of structuralist constructivism. On the basis of a thorough analysis of scientific sources, the definition of the environment of the human being is operationalized as a space consisting of the components: the biosphere, technosphere and artificial space (physical) - a place (city, village), housing, as well as a society represented by three levels: socio-etal (culture , political power), institutional (institutions of society, unifying statuses and roles of individuals) status-role. It is established that public opinion is highly concerned about the environmental situation of the environment, however, environmental values are far from the first place in the status-hierarchical structure of social values, which impedes the ecologization of social practices and the institutionalization of environmental interests. According to the results of a sociological survey of residents of the city, it was established that among the existing environmental problems in the city leaders are: pollution of water bodies; atmospheric air pollution; deterioration of drinking water quality; the state of garbage dumps. It was clarified that the effects of the representation of the ecology of the spatial organization of the city are in a state of awareness both from the side of society and the authorities. The emphasis is on key principles and actors in solving environmental problems of the city.


2020 ◽  
Vol 99 (4) ◽  
pp. 405-411
Author(s):  
Elena Ju. Gorbatkova

Introduction. The important factors affecting health and performance of young people are the conditions of education, in particular, a comfortable microclimate in the classrooms of higher educational institutions. Materials and methods. In view of the urgency of this problem, an analysis was made of the microclimate parameters of educational organizations of different profiles (Ufa city, the Republic of Bashkortostan). 294 classrooms were studied in 22 buildings of 4 leading universities in Ufa. A total of 3,822 measurements were taken to determine the parameters of the microclimate. The analysis of ionizing radiation in the aerial environment of classrooms. There was performed determination of radon and its affiliated products content. In order to assess the conditions and lifestyle of students of 4 higher educational institutions of the city of Ufa, we conducted an anonymous survey of 1,820 students of I and IV years of education. Results. The average temperature in the classrooms of all universities studied was 23.9±0.09 C. The average relative humidity in all classrooms was 34.2 ± 0.42%. Analysis of ionizing radiation (radon and its daughter products decay) in the aerial environment of the classrooms and sports halls located in the basement determined that the average annual equivalent equilibrium volumetric activity of the radon daughter products (EROA ± Δ222Rn) ranged from 28 ± 14 to 69 ± 34.5 meter, which meets the requirements established by SanPiN. Conclusion. The hygienic assessment of the microclimate parameters of educational institutions of various profile revealed a number of deviations from the regulated norms. The results indicate the need to control the parameters of the microclimate, both from the administration of universities, and from the professors. According to the results of the study, recommendations were prepared for the management of higher educational institutions in Ufa.


Author(s):  
Oleksii Chepov ◽  

The qualitative and clear definition of the legal regime of the capital of Ukraine, the hero city of Kyiv, is influenced by its legislative enshrinement, however, it should be noted that discussions are ongoing and one of the reasons for the unclear legal status of the capital is the ambiguity of current legislation in this area. Separation of the functions of the city of Kyiv, which are carried out to ensure the rights of citizens of Ukraine and the functions that guarantee the rights of the territorial community of the city of Kyiv. In the modern world, in legal doctrine and practice, the capital is understood as the capital of the country, which at the legislative level received this status and, accordingly, is the administrative and political center of the state, which houses the main state bodies and diplomatic missions of other states. It is the identification of the boundaries of the relationship between the competencies of state administrations and local self-government, in practice, often raises questions about their delimitation and ways of regulatory solution. Peculiarities of local self-government in Kyiv city districts are defined in the provisions of the Law on the Capital, which reveal the norms of the Constitution in these legal relations, according to which the issue of organizing district management in cities belongs to city councils. Likewise, it is unregulated by law to lose the particularity of the legal status of the territory of the city. It should be emphasized that the subject of administrative-legal relations is not a certain administrative-territorial entity, but the social group is designated - the territorial community of the city of Kiev, kiyani. Thus, the provisions on the city of Kyiv partially ignore the potential of the territorial community.


2020 ◽  
Vol 24 (3) ◽  
pp. 64-71
Author(s):  
A. V. Sukalo ◽  
I. A. Kazyra

INTRODUCTION. Among systemic vasopathies in children, IgA vasculitis Henoch Schoenlein (HS) is the most common, according to various authors, kidney damage is noted in 25-80 % and usually determines the prognosis of the disease.THE AIM of the study was to analyze clinical, laboratory, immunological, morphological characteristics, features of the course and treatment of nephritis associated with IgA vasculitis HS in children, as well as factors affecting the prognosis.PATIENTS AND METHODS. The study included 31 patients with morphologically verified nephritis due to IgA vasculitis HS (18 – boys, 13 – girls) aged 3 to 17 years, who were monitored at the Nephrology Department of the "2nd Children's City Clinical Hospital" of the National Center for Pediatric Nephrology and Renal Replacement therapy in Minsk from 2010 to 2019 yrs.The following parameters were analyzed: the clinical variant of kidney damage, laboratory tests (including the study of BAFF, RANTES lymphocyte activation molecules, pro-inflammatory IL1β, caspase1, TNFα, growth factors VEGF, TGF), 24 hours monitoring and office blood pressure measurements, ECHO cardiography with indicescalculation, ultrasound of the carotid arteries with the thickness of intima-media complex, morphological changes in the renal tissue, as well as treatment regimens.RESULTS. The contribution of deGal-IgA1, markers of T and B lymphocytes activation, pro-inflammatory and profibrotic molecules in the development of the disease is shown. Arterial hypertension was registered in 42 % of children, signs of heart remodeling according to the calculated indices in 19,3 %. Decrease level of adiponectin, vitamin D, leptin, increase concentration of obestatin, Pro-BNP, hs-CRP, and TSAT indicator classify patients with nephritis due to IgA vasculitis HS at moderate risk for the developmentof cardio-vascular disorders, which suggests the need for timely correction.CONCLUSION. In most cases, nephritis with IgA vasculitis HS has a benign course with rare relapses and progression to the end stage of chronic kidney disease (6,5 %).


Author(s):  
С. Л. Подвальный ◽  
О. А. Сотникова ◽  
Я. А. Золотухина

Постановка задачи. В настоящее время формирование современной комфортной городской среды приобретает особое социально-экономическое значение и выдвигается в число приоритетных государственных масштабных программ. В связи с этим необходимо разработать концепцию благоустройства ключевого общественного пространства, а именно: определить основные и сопутствующие функции данной территории, создать эскизное предложение проекта благоустройства с учетом всех необходимых норм и стандартов, внедрить современные технологии. Результаты. Выполнен эскизный дизайн-проект «Аллеи архитекторов» по ул. Орджоникидзе г. Воронеж, включающий в себя основные элементы по зонированию территории, проектированию акцентных объектов и внедрению инновационных технологий «умного города», позволяющих повысить уровень комфорта горожан. Выводы. Благоустройство населенных мест приобретает особое значение в условиях дискомфорта среды. С выполнением комплекса мероприятий, направленных на благоустройство, и с внедрением современных технологий значительно улучшается экологическое состояние, внешний облик города. Оздоровление и модернизация среды, которая окружает человека в городе, благотворно влияет на психофизическое состояние, что особенно важно в период интенсивного роста городов. Statement of the problem. Currently the formation of the modern comfortable urban environment is gaining a special social and economic value and moving forward in the priorities of state large-scale programs. The purpose of development of the concept of improvement of public space is definition of the main and accompanying functions of this territory, design of the outline offer of the project of improvement considering all necessary norms and standards and implementation of modern technologies. Results. The conceptual project of “Alley of Architects” includes the basic elements of territory zoning, design of accent objects and implementation of technologies of a “smart-city”. These elements allow one to increase the level of comfort of inhabitants. Conclusions. Improvement of the inhabited places is of particular importance in the conditions of discomfort of the environment. Carrying out a complex of the actions directed to gardening and improvement, introducing modern technologies, the ecological condition, the physical appearance of the city considerably improves. Improvement and modernization of the environment which surrounds the person in the city influences a psychophysical state well that especially important during intensive growth of the cities.


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