Results 51 to 60 of about 2,887,865 (118)

Hydrogeochemical processes of groundwater system and its mining-motivated effect in mining areas of Western China

Meitan xuebao
The exploitation of coal resources will destroy the aquifer structure, disturb the groundwater system and produce a new water cycle model. As the focus of coal supply and production, the western mining area is short of water resources and fragile in ...
Aoshuang MEI, Yifan ZENG, Qiang WU, Zhichao LIU, Yanping MIAO, Sitong WANG, Yashuai CUI, Huaming WEI, Shuaifeng REN, Lei YANG   +9 more
doaj   +1 more source

Research on the Risk Assessment of Water Inrush From the Roof of the Fully Mechanized Mining Face in Huanglong Jurassic Coalfield

Geofluids, Volume 2025, Issue 1, 2025.
The frequent occurrence of water inrush disasters from the fissured aquifer of the Lower Cretaceous Luohe Formation sandstone in the Jurassic coalfield of Huanglong, due to mining‐induced disturbances in the roof, poses a significant threat to the safe production of mines.
Yanbo Hu, Wenbo Feng, Gang Zheng, Xinmin Chen, Pramita Mishra   +4 more
wiley   +1 more source

Study on Overlying Rock Movement and Surface Highway Deformation Under Deep Mining–Induced Fluid–Solid Coupling Effects

Shock and Vibration, Volume 2025, Issue 1, 2025.
Current research on deep mining–induced overburden movement and highway deformation has neglected the amplification effect of fluid seepage‐rock mass deformation coupling interactions on differential settlement, while predominantly focusing on highway alignments parallel or orthogonal to underlying working faces.
Junyi Liu, Zhe Hao, Jie Sun, Le Liu, Yanfei Zhu, Qingle Cheng   +5 more
wiley   +1 more source

Le Transfert des apprentissages dans une démarche de formation sur mesure / [PDF]

, 1989
La couv. porte en outre: L'éducation des adultes, la maîtrise de son avenirBibliogr.: p.
Boutin, Nicole, Campeau, Daniel, 1939-, Archambault, Lorraine, Québec (Province). Service de la formation aux adultes   +3 more
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UFLI-Based Uranium Anomaly Layer Delineation and 3D Orebody Reconstruction of the Daying Uranium Deposit Within the Northern Ordos Basin, China

Geosciences
Sandstone uranium deposits exhibit stratabound mineralization and strong vertical heterogeneity in geological space, which complicates the identification of uranium anomaly layers and their integration into deposit-scale 3D models using borehole datasets.
Yulei Tan, Jianyu Huang, Liyuan Zhang, Laijun Lu, Baopeng Chen, Tongyuan Liang, Lin Pan   +6 more
doaj   +1 more source

Analysis of the Influence of Boundary Permeability Characteristics Under Fluid–Solid Coupling on Surface Subsidence in Deep Near‐Horizontal Coal Seam Mining

Shock and Vibration, Volume 2024, Issue 1, 2024.
The fluid–solid coupling effect is an important factor which cannot be ignored to study the surface subsidence of deep coal seam mining in the area with abundant underground water. To study the influence of boundary permeability characteristics on surface subsidence in deep near‐horizontal coal seam mining under the effect of fluid–solid coupling, the ...
Jie Sun, Zhe Hao, Le Liu, Yanfei Zhu, Cheng Shen, Zhipeng Zhao   +5 more
wiley   +1 more source

Secteur de formation 9 : électrotechnique [PDF]

, 2008
Titre de l'écran-titre (visionné le 21 août 2008)"Secteur de formation 9 ...
Huot, Benoit, Québec (Province). Formation professionnelle et technique et formation continue. Direction générale de la formation professionnelle et technique, Cloutier, Pierre,, Saint-Laurent, Denis, Deschênes, Gilles, Boutet, Yvon,   +5 more
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Analysis of coal seam water sources based on hydrochemistry and water isotopes

Meitian dizhi yu kantan
BackgroundThe northern Yuheng mining area exhibits the widespread occurrence of water-bearing coal seams. This unique hydrogeological phenomenon poses a serious challenge to efficient mine roadway construction and safe coal mining in the mining area. The
Dong WEI, Hao WANG, Chungang WANG, Xiaodong WANG, Wei LIU, Qiangmin WANG, Quanhui LIU, Zhenfang ZHOU, Yutong WANG   +8 more
doaj   +1 more source

Formation professionnelle [PDF]

, 1995
Publ. comme no 7, janv./avril 1996 de la revue Formation professionnelleL'évolution des fonctions de la formation -- Enseignement ouvert -- Modularisation : aspects du débat en Allemagne et au Royaume-Uni -- Développement de compétences et organisation ...
Centre européen pour le développement de la formation professionnelle
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Formation professionnelle [PDF]

, 1993
Publ.
Centre européen pour le développement de la formation professionnelle
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