in this study, a hybrid intelligent model has been designed to predict groundwater inflow to a mine pit during its advance. novel hybrid method coupling artificial neural network (ann) with genetic algorithm (ga) called ann-ga, was utilised. ratios of pit depth to aquifer thickness, pit bottom radius to its top radius, inverse of pit advance time and the hydraulic head (hh) in the observation w...

Abstract Small lakes provide substantial ecosystem services to society, particularly recreational services. These are rarely quantified. It is also unclear whether expectations about desired lake attributes by various user groups and the public at large align. In many landscapes most small artificially originate from sand gravel mining along highways close cities. Using a choice experiment, in ...

abandoned surface mine excavations can be a major environmental, social and/or human healthproblem for the mining industry as well as for the community living nearby. this problem is exacerbated by therapidly growing population encroaching on areas of historic mined lands. the aim of this studywas to assess thesafety status of the historic nyala mine excavation with the purpose of coming up wit...

Almost all post-exploitation open pit mines in the world are shaped as a final water reservoir. One of main hazards is slope stability lake banks. To develop reliability methodology for assessing long-term flooded open-pit lake, back analysis was conducted using 2D and 3D large-scale numerical models Lake Most, which one largest mining lakes Europe (Czech Republic). The model built, based on si...

To meet human food and fiber needs in an environmentally economically sustainable way, we must improve the efficiency of waste, water, nutrient use by converting vast quantities agricultural waste to renewable bioproducts. This work converts cherry pits, abundant Great Lakes region, biochars activated via slow pyrolysis. Biochars produced have surface areas between 206 274 m2/g increased bioava...

the determination of the ultimate pit limit (upl) is the first step in the open pit mine planning process. in this stage that parts of the mineral deposit that are economic to mine are determined. there are several mathematical, heuristic and meta-heuristic algorithms to determine upl. the optimization criterion in these algorithms is maximization of the total profit whilst satisfying the...

Abstract Large-scale open-pit mining activities have profound impacts on the surrounding landscape and environment. At cessation of mining, rehabilitation large void spaces can be achieved by pit-lake filling, where water body provides a confining pressure mine surfaces, reducing both likelihood slope failure need for ongoing maintenance. Although pit-lakes present range long-term benefits, geo...

Lava lakes are a fascinating but somewhat rare form of volcanic activity. large free surfaces hot lava that discharge continuously, and almost quietly, heat gases into the atmosphere. They thought to be fed by convection processes bring gas-rich magma surface back downward, after its cooling outgassing. A lake represents latent threat for populations living nearby, as it can drain suddenly thro...