Optimization of gob ventilation boreholes design in longwall mining
نویسندگان
چکیده
منابع مشابه
Coal Bed Discontinuity Effects on the Production of Degasification Boreholes and on Emissions during Longwall Mining
Geological discontinues in the coalbed, such as faults, sandstone channels, permeability facies, lithotype changes, and large scale partings in the coal seam, can cause intermittent production problems or produce unexpected amounts of water or gas from degasification boreholes. These discontinuities not only can impact methane emissions into the mine workings, especially if they hinder proper a...
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In longwall mining, premining prediction of methane emission rate depends on a number of geological factors, geographical factors, and operational factors. These same factors also can impact the selection of a specific degasification system. This study proposes a principle component analysis (PCA) and artificial neural network (ANN) approach to predict the ventilation methane emission rates of ...
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Comprehensive assessments of the need for additional methane control capacity beyond ventilation often require both an empirical and theoretical approach for an adequate or timely control of increased methane emission levels. Thus, the prediction of methane emissions and optimization of methane control systems prior to starting a new mining operation will be a major improvement towards eliminat...
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Coal is an important fossil fuel and will also be for the next decades [1]. The only way to achieve the challenges faced by the coal industry is to reduce production costs by improving productivity. Improvement of productivity has become an important goal for today’s coal industry in the race to increase price competitiveness. In recent years, underground mining method is becoming popular becau...
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ژورنال
عنوان ژورنال: International Journal of Mining Science and Technology
سال: 2020
ISSN: 2095-2686
DOI: 10.1016/j.ijmst.2020.08.005