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Geotechnical Mapping: Susceptibility to Collapsible Soils, Expansive Soils, Erosive Soils, Dispersive Soils and Soft Soils, Based on the Sedology of the City of Caruaru- Pernambuco/Brazil
Amanda Evelyn Barbosa de Aquino, Raiza Silva Bezerra, Silvio Romero de Melo Ferreira
Planning tools for land use and occupation of the soil use in cities are of the utmost importance, and correct urban planning can reduce soil, water, vegetation and fauna degradation, as well as prevent the population of accidents from misuse or improper land management. The use of tools such as geotechnical cartography, geared to assist this type of planning of cities should be increasingly developed. There are conditioning such as pedology, geology, climate, geomorphology and hydrology that help to evaluate geotechnical risk processes. This work aims to analyze five geotechnical processes taking into account the pedology of the city of Caruaru-PE, located in Brazil. Based on the pedological map of the soils of the State of Pernambuco and the City of Caruaru, made by Silvia et.al [1] the analysis of the main properties and characteristics of the soils present in the city was carried out. Susceptibility of occurrence between low, medium and high from the pedological point of view, and from these verifications letters were generated. During the preparation of the letters, it was observed a predominance of low susceptibilities, where: for Soil Collapsible with an area of 920.6 km2 (100%), Expansive Soils 820.5 km2 (89.12%), Erosion 604.36 km2 (65.65%) and 618.6 Soft Soil km2 (67.19%) – and had a higher concentration of areas with high susceptibility to Erosion and Dispersive soils, both with 218.5 km2 (23.73%).
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