CONTRIBUIÇÕES DO PASSADO EM AUXILIO AO FUTURO: TÉCNICAS DE RECUPERAÇÃO DE ÁREAS AFETADAS POR RUPTURA DE BARRAGEM DE REJEITO – UM ESTUDO DE CASO

Abstract

The approach about procedures and edaphic conservation is utterly important, because there are many challanges that have to be faced considering the environmental balance and the use sustainable natural resources. In this context it is essential to analyze techniques of mitigation of impactes used after the dam break in Mirai (MG) in 2007. Considered the second largest environmental disaster of dam break in Brazil, it has affected the lives of many natural ecosystems, only overcome by the recent episode occurred in Mariana (MG) in November 2015, scenario analysis such analyses is essential for the development and monitoring of an effective restoration plan of Doce River s basin. Actions such as the rebuilding of the physical stock and the affected biological ecosystems were prioritized, in compliance with legal requirements and taking in consideration the environment and the population from the affected areas. This study aimed to analyze the actions and measures for the environmental recovery of the area directly affected by the rupture of the San Francisco dam, located in Mirai, MG and intended for containment of wastes arising from the bauxite beneficiation process. All this in order to provide technical inputs, coupled with the search for solutions to the biggest environmental accident of the recent history of Brazil, contamination of the Rio Doce through tailings dam break. Specifically, the following were analyzed: recovery of river runners and temporary dikes; stabilization of slopes; recovery of marginal areas of protection and hydrological monitoring in the region.