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HYDROSEEDING, BIOENGINEERING TECHNIQUE FOR THE RESTORATION OF SOILS RESULTING FROM MINING ACTIVITIES: MIRADOR MINING PROJECT CA

By: Eng. Armando Rivera and Eng. Ángel Cueva, Environmental Coordinator of the Safety, Health and Environment Department, and Manager of the Mine Engineering Department of EcuaCorriente.


Summary

Mirador project's mineral extraction will be carried out using open-pit mining and requires the construction of a large number of major facilities such as: roads, accesses, camps, platforms, dikes, conveyor belts, water channels and more; this involves the removal of large quantities of soil and, subsequently, the adaptation of stabilized landfills with environmental restoration techniques. Mirador is located in a tropical area with an annual average rainfall of 2,500 mm, which in soils unprotected by vegetation generates erosion and sedimentation of water bodies. The project, which is developed from level 796 to 1657, presents two natural ecosystems: the piedmont rainforest and the lower montane rainforest, both representing dozens of species of flowers that grow by natural succession.

Controlling erosion using native flora species is a challenge that must be carefully analyzed. This, as well as the technology to be used, the selection of appropriate plants for each type of ecosystem and the type of soil are part of this paper's research.

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