Results 31 to 40 of about 63,148 (319)
Canaries in the coal mine [PDF]
European Respiratory Journal, 2013 Up until 30 years ago, coalminers relied on canaries as warning systems against harmful gases and pollutants underground. The miners listened for birdsong and if the birds fell silent, then they knew there was danger to their health and to take action. Today we have much more sophisticated information and reporting on the quality of air.
openaire +2 more sources
Meitan xuebaoTo obtain the activity patterns and response characteristics of the overburden strata under different fracturing degrees of the roof, and thereby provide a reference for preventing and controlling roof-dominated rock burst through regional fracturing ...
Jianhong WU +6 more
doaj +1 more source
Deep Underground Science and Engineering, 2023 Grouting is an effective method to improve the integrity and stability of fractured rocks that surround deep roadways. After years of research and practice, various theories and a complete set of grouting technologies for deep roadways with fractured ...
Hongpu Kang +3 more
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Geofluids, 2022 As the problems of serious bottom drum and roadway broken surrounding rock are influenced by repeated mining in multiple coal seams, the factors affecting the surrounding rock deformation of a +980 m roadway in Faer coal mine by analyzing the rock ...
Changzheng Zhao +4 more
doaj +1 more source
Electricity-gas integrated energy system optimal operation in typical scenario of coal district considering hydrogen heavy trucks [PDF]
arXiv, 2021 The coal industry contributes significantly to the social economy, but the emission of greenhouse gases puts huge pressure on the environment in the process of mining, transportation, and power generation. In the integrated energy system (IES), the current research about the power-to-gas (P2G) technology mainly focuses on the injection of hydrogen ...
arxiv
Coal mining and coal use: the European perspective [PDF]
The Lancet Planetary Health, 2019 n ...
Michele Emiliano +7 more
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Meitan kexue jishuThe reserves and production of thick coal seams account for half of the total reserves and production of raw coal in China. By combing the history of thick coal seam mining, we summarize the technology and equipment development practice of thick coal ...
Huijun HAN +5 more
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