نتایج جستجو برای: limestone mine
تعداد نتایج: 29281 فیلتر نتایج به سال:
two roadways in adjacent working face of Baode Mine may have the risk water inrush at same time, so it is necessary to construct long borehole cover roadway excavation. On basis hydrogeological conditions mine, safe insulation thickness and coefficient coal seam No .8 are calculated. The results show that 0.035-0.037 MPa/m, which less than critical value 0.06 MPa/m bottom plate has no sudden ha...
State and federal reclamation programs, mining operators, and citizen-based watershed organizations have constructed hundreds of passive systems in the eastern U.S. over the past 20 years to provide reliable, low cost, low maintenance mine water treatment in remote locations. While performance has been reported for individual systems, there has not been a comprehensive evaluation of the perform...
In order to reduce the large rocks produced by blasting of hillside open-pit mine with heterogeneous and complex rock mass in arid area, based on lithology characteristics Dabancheng Limestone Hillside Open-pit Mine Hongshun, Xinjiang, key technology for homogeneous is proposed this paper. We can conclude from experiment that (1) it preferable have a detonation network realizes multi-stage mill...
Measuring the quality parameters ofmaterials atmines is difficult and a costly job. In this paper, an image analysis-basedmethod is proposed efficiently and cost effectively that determines the quality parameters of material. The image features are extracted from the samples collected from amine and modeled using neural networks against the actual grade values of the samples generated by chemic...
Metalliferous mining activities generate a large amount of waste. This waste usually has high concentrations pollutants such as metal(oid)s associated with the extractive processes, which, if not properly treated and reclaimed, put ecosystem population at risk. One most used techniques for mine reclamation is aided phytostabilization, which based on use plants that immobilize metals in soil/roo...
Predicting post-mining water quality is a key task in managing mine drainage. The most scientifically-defensible approach would be to undertake thermodynamics-based modeling of coupled geochemical and hydrodynamic processes occurring in flooded and partly flooded underground workings. Most models currently in use make the fatal assumption of local equilibrium, or else do not include all importa...
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