Groundwater Flow Simulation at Mine Closure Time Scale with MODFLOW and Model Muse

This tutorial deals with the simulation of the groundwater flow regimen after the implementation of mine closure options as soil/geomembrane cover above a Tailings Storage Facility (TSF) over a period of 80 years with results every 4 years. The tutorial deal with a full steady flow model which have been implemented to transient conditions on the model configuration and boundary conditions. A discussion of the seepage with time and final conditions after closure is presented to analyse the efficiency of the closure techniques.

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Environmental flow determination by hidrological modeling

The world water legislation has a common challenge: distribute fresh water resources in a fair, efficient and sustainable way. Traditionally, agriculture, industry, mining and municipalities have competed for these limited resources.

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Climate change impact on watershed response

Mathematical models of global climate can reproduce many aspects of the physical climate system. General Circulation Models (GCMs) simulate physical processes in the atmosphere, ocean, cryosphere, and on land surface. Predictive scenarios on climate change will be applied to selected GCM models and their output will be used on the PRMS hydrologic simulations.

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Development of a watershed-based water balance

Water balance is known as the balance of water entering the system and the water that leaves within a specified time, but to understand it better we need to understand: what is a watershed? Unterstood as a whole, a unity, as a system, as the space bounded by the union of all the headers that form the main river through the territory drained by a single natural drainage system.

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Main predictive simulations for an EIA in mining

Impact assessment of mining projects on groundwater resources can be a challenging task due to uncertainty on groundwater flow regime, the complex numerical tools to successfully simulate stresses on groundwater resources posed by the mining projects, timeframe and budget of EIAs.

In this article, we will call EIA the document issued before the mine begins for regulatory official approval and social license.

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Bioremediation of tailings and waste dumps

Mining processes of mineral extraction are neither completely efficient nor able to recover all expended and reusable reagents and chemicals from them. The process effluents known as tailings are generally stored in surface reservoirs; in recent times of high volume related to the current extensive exploitation of low grade ores. Environmental regulations become harder due to the present and long-term risks involved in the storage of high quantities of heavy metals and chemicals. It is also important to consider that tailings do not provide any financial gain to the mining company, representing an external cost for the operation.

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Groundwater monitoring system implementation

A monitoring system is a platform where level and quality records that describe groundwater resources are generated, made available and evaluated. These records are consistent, representative and long lasting. Managing the aquifer to local or regional level is required in order to have environmental managers with easy access for comprehensive, representative and reliable information.

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Tutorial to evaluate water consumption on forested / deforested zones

Quick tutorial to assess the water consumption by vegetation depending on the vegetation type. The area of interest has an extension of 0.4° Degrees N-S and 0.6° Degrees E-W. The coordinates of the area of interest are: N:-8.4°,W:-75.2°,S:-8.8°,-74.6°.

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