DOI: 10.5593/SGEM2014/B21/S8.072


U. M. Hernandez, G. H. Juarez, M. D. Aguilera-Escobar, C. M. Albavera-Ayala, R.M. Rodriguez, I. A. Amador-Barajas
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-10-0 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 1, 563-570 pp

Mexico is located in one region, which is affected for several natural hazards. In many cases, these hazards had caused important economic losses and many deaths. Mexico is located in one of the seismic most active regions of the world, which is the result of the Cocos tectonic plate subducting beneath the North American plate. Such subduction in the Pacific coastal region is usually the cause of large destructive earthquakes, including the great Mexican Earthquake of 1985. On the other hand, Mexico has been devastated throughout its history by hurricanes, which are the worst events of the tropical cyclones, reaching the category of 5 (over 250 kph) in several occasions. However, there are another phenomena that affect the structural integrity of electrical facilities as corrosion. Corrosion of steel reinforcement is the main cause of damage and early failure of reinforced concrete and steel structures. Structures at the seashore of Mexico experience enhanced deterioration due to bad construction practices such as: the use of high water-to-cement (w/c) ratios, the use of aggregates that in most of the cases present an excess in fine particles, and the custom of making foundations in direct contact with the sedimentary layer of sand and seashell. In order to carry out risk studies, is necessary to know the type and intensity of the hazard, the structural integrity, and to apply the adequate methodology to relate both concepts. One of the most important stages of this work is collect structural information in situ. For this reason, 162 Electrical Substation of transmission were inspected applying nondestructive tests. The analysis of this information will allow to develop maps, which can be used in the risk studies. In this paper, a GIS application to manage the information of structures of electrical facilities is presented. The application shows the factors that affect the structural integrity. These factors are grouping in physicals (earthquakes, tropical cyclones, flooding, etc.), chemicals (carbonation, acid rain, drying, etc.) and organic (microorganism, seaweed, pollute waters). The application integrates a qualification methodology to assess the structural integrity, hazard maps, and restoration and reinforce procedures based on structural qualification. The application will be applied in the nine regions of the country.

Keywords: Natural Hazards, Structural integrity, Nondestructive test, GIS applications, electrical infrastructures

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