Investigating steeply inclined abandoned mines for unlocking the secrets of water level recovery [PDF]
Scientific ReportsWith the growing emphasis on environmental protection, many coal mines in northern China were closed. However, the cessation of pumping operations in those closed mines has caused a rise in groundwater levels, giving rise to various safety and ...
Yarui Li +7 more
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Simulation experiment on the structural evolution and damage-deterioration mechanism of boundary coal pillars under immersion in abandoned mines [PDF]
Meitan xuebaoIn coal mine production, water-proof coal pillars are reserved to prevent water hazards from old goaf areas. However, under long-term pressurized immersion of aggressive mine water accumulated in abandoned goaf areas, both macroscopic and mesoscopic ...
Zhimin XU +6 more
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Gas drainage and optimal arrangement of boreholes based on permeability anisotropy
Geomatics, Natural Hazards & Risk, 2023 Based on the true triaxial dynamic anisotropic permeability model of coal and rock, a multi field coupling mathematical model of structurally anisotropic coal seams under true triaxial stress was established, and a numerical simulation experiment of ...
Minke Duan +6 more
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Study on Damage Law of Raw Coal Based on Different Characterization Methods
Advances in Civil Engineering, 2022 The different damage variables equation based on strain, energy dissipation, acoustic emission (AE), and permeability characteristics under tiered cyclic loading were defined.
Minke Duan +5 more
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Impact of water accumulation in abandoned mines on adjacent production mines
Gong-kuang zidonghua, 2022 The goaf water accumulation of abandoned mine will damage the strength of boundary coal pillar, cause coal pillar failure, and pose a threat to the safety of adjacent production mine.
HAO Hongjun +5 more
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Generation of Acid Mine Lakes Associated with Abandoned Coal Mines in Northwest Turkey [PDF]
Archives of Environmental Contamination and Toxicology, 2016 A total of five acid mine lakes (AMLs) located in northwest Turkey were investigated using combined isotope, molecular, and geochemical techniques to identify geochemical processes controlling and promoting acid formation. All of the investigated lakes showed typical characteristics of an AML with low pH (2.59-3.79) and high electrical conductivity ...
Yucel, Deniz Sanliyuksel +2 more
openaire +5 more sources
Evaluation and composition analysis of coal abandonment in abandoned mines
, 2022 Abstract The development and utilisation of gas resources in closed mines is based on statistics of coal reserves that have been abandoned for a variety of reasons, with the evaluation method and procedure playing a crucial role as the core technology.
Jinzhao Liu +3 more
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Microbial diversity and biogenic methane potential of a thermogenic-gas coal mine [PDF]
, 2014 The microbial communities and biogenic methane potential of a gas coal mine were investigated by cultivation-independent and cultivation-dependent approaches.
Wei, Min +3 more
core +1 more source
Vertical stress and stability of interburden over an abandoned pillar working before upward mining: a case study [PDF]
Royal Society Open Science, 2018 Upward mining of the residual coal seam over an abandoned pillar working is one of the effective measures to alleviate the contradiction between limited resources and increased consumption.
Jinwen Bai +10 more
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Study on application of integrated mining mode of “mining, selection, drainage, filling and mining”
Meikuang Anquan, 2021 Aiming at a series of mining problems in No.12 mine of Pingdingshan Tian’an Coal Mining Company, such as coal seam gas control, gangue emission pollution, high gas and low permeability without conventional protective layer, the integrated circulation ...
DENG Wuxian, DAI Zhixu
doaj +1 more source