Análisis de susceptibilidad por movimientos de masas de los taludes del km 28 vía perimetral a km 11 vía a la costa, provincia del Guayas, Ecuador.
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2021-03
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Facultad de Ciencias Naturales. Universidad de Guayaquil
Resumen
El presente estudio tuvo como objetivo el análisis de susceptibilidad por movimientos de masas de los taludes entre el Km 28 Vía Perimetral a Km 11 Vía a la Costa, ciudad de Guayaquil, provincia del Guayas. Mediante la recopilación de trabajos realizados en la zona e interpretación de imágenes satelitales, se realiza la selección de lugares para el trabajo de campo, con los que se define las características geológicas, estructurales y geomecánicas del área de estudio. Luego con la información obtenida se calcula en oficina la valoración RMR de Bieniawski (1989) de los taludes, y se determina su tipo de rotura mediante análisis cinemático en el software DIPS; además se confecciona una serie de mapas temáticos en el software ArcGIS referente a pendientes, tipos de cobertura, geología, valoración geomecánica y precipitación; cuyos rangos y ponderaciones están acorde a la modificación realizada del método Mora-Vahrson (1993). Al finalizar se obtiene como resultado un mapa de susceptibilidad de movimientos en masa clasificando a la zona de estudio en cinco clases: Muy alta, Alta, Media, Baja y Muy Baja, en la que predomina la susceptibilidad Alta en más de un 33% del área estudiada, seguida de un 30.4% y 16% correspondientes a rangos de susceptibilidad Muy Baja y Media.
This study had as objective the susceptibility analysis by mass movements of slopes from Km 28 Perimetral Road to Km 11 a la Costa Road, Guayaquil City, Guayas province. Through previous studies recompilation and satellite imagery interpretation, places for field works are made, which study area's geological, structural and geomechanical characteristics are defined. Later, with the information obtained the RMR Bieniawski (1989) valuation of slopes is calculated, and its rupture type is determined through DIPS software, then a thematic maps series from ArcGIS software is made, referent to slope, coverage type, geology, geomechanical valuation and precipitation; which ranges and weights are in accordance to Mora-Vahrson (1993) method modification. At the end the results are a susceptibility by mass movement’s maps that classifies the study area into five classes: Very High, High, Medium, Low and Very Low susceptibility, which High susceptibility predominates in more than 33% of the studied area, followed by a 30.4% and 16% corresponding from Very Low and Medium Susceptibility.
This study had as objective the susceptibility analysis by mass movements of slopes from Km 28 Perimetral Road to Km 11 a la Costa Road, Guayaquil City, Guayas province. Through previous studies recompilation and satellite imagery interpretation, places for field works are made, which study area's geological, structural and geomechanical characteristics are defined. Later, with the information obtained the RMR Bieniawski (1989) valuation of slopes is calculated, and its rupture type is determined through DIPS software, then a thematic maps series from ArcGIS software is made, referent to slope, coverage type, geology, geomechanical valuation and precipitation; which ranges and weights are in accordance to Mora-Vahrson (1993) method modification. At the end the results are a susceptibility by mass movement’s maps that classifies the study area into five classes: Very High, High, Medium, Low and Very Low susceptibility, which High susceptibility predominates in more than 33% of the studied area, followed by a 30.4% and 16% corresponding from Very Low and Medium Susceptibility.
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SUSCEPTIBILIDAD, MOVIMIENTOS DE MASAS, GEOMECÁNICA