Results 71 to 80 of about 199 (123)

Geological technological innovations and contributions in the exploration and development of the Shenfu coalfield [PDF]

BackgroundThe discovery and exploration of the Shenfu coalfield (i.e., a Jurassic coalfield in northern Shaanxi Province) represent the most significant achievement in China’s coal industry during the 6th Five-Year Plan of the country, marking the onset ...
Limin FAN
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Water filling intensity assessment of a coal seam roof in the Dahaize Coal Mine, northern Ordos Basin

Meitian dizhi yu kantan
BackgroundAssessing water filling intensity in coal seam floors lays a foundation for the prevention and control of water hazards in mines. However, in the Jurassic coalfield in the northern Ordos Basin, complex hydrogeological structures and sedimentary
Xi LIU, Xiang DING, Haiyu HUANG, Zhaoyang LI, Zhe LI, Sheng ZHENG   +5 more
doaj   +1 more source

From Deformation Monitoring to Mechanism Insight: Assessing Sudden Subsidence Risk via an Improved 2D SBAS-InSAR and Physical Modeling Approach

Sensors
Safe and efficient coal mining faces a global challenge in predicting sudden surface subsidence whose mechanisms remain unclear. This study, centered on deep coal seams in China’s Ordos Basin, examines the risk of abrupt subsidence controlled by high ...
Qiu Du, Guangli Guo, Huaizhan Li, Liangui Zhang, Fanzhen Meng, Zhenqi Hu, Jingchao Sun   +6 more
doaj   +1 more source

Multiple fractal characterization of medium-high rank coal integrating mercury intrusion porosimetry, N2 and CO2 adsorption experiments [PDF]

Multifractal features of the pore structures of coal reservoirs control the transport and sustainable production of coalbed methane (CBM), which directly determines the efficiency of CBM extraction and is of great importance for CBM extraction.
Miao ZHANG, Qinjie LIU, Xingzhen WANG, Zhiyong DONG   +3 more
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Groundwater renewal capacity of Jurassic coalfields in northern Ordos Basin

Meitan xuebao
With the westward shift of the focus of coal mining, the Jurassic coalfield in the northern Ordos Basin has become an important energy security base in China.
Jian YANG, Yue PU, Hui LI
doaj   +1 more source

Water-richness evaluation of Luohe Formation aquifer above coal seam based on combination weighting method [PDF]

Hetaoyu well field has large production capacity and stable distribution of coal seam， The thick sandstone aquifer of Luohe Formation in the roof of coal seam is the main water-filling aquifer which will result in coal seam roof water damage and ...
Bao WAN, Gelong LIANG, Jianjun JIAO, Laihong FENG, Leiyu GU, Lili HOU, Rui ZHANG, Yuan LI   +7 more
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Study on dynamic sand collapse mechanism of weakly consolidated rock strata in thick bedrock stope in western China

Scientific Reports
The superimposed disaster of water and sand collapse and strong ore pressure appearance in the two coal bases of Huanglong and Ningdong mining areas in western China is a kind of dynamic sand collapse disaster of weakly consolidated rock strata in the ...
Liu Zhaoxing, Dong Shuning, Guo Xiaoming, Li Xiaolong, Liu Yingfeng, Guo Kang   +5 more
doaj   +1 more source

Epidemiology and microbiota of early childhood caries [PDF]

, 2017
Hintergrund: Die frühkindliche Karies (Milchzahnkaries) betrifft mehr als ein Drittel der Kinder in Deutschland mit Milchzähnen. Verlässliche Daten hinsichtlich der Verteilung in Deutschland oder auf kleinräumiger Stadtebene sind nicht verfügbar.
Meyer, Frederic Uwe
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Supporting early Carbon Capture Utilisation and Storage development in non-power industrial sectors, Shaanxi Province, China [PDF]

, 2012
Carbon capture and storage (CCS) is a technology that can prevent the release of large quantities of CO2 into the atmosphere from the use of fossil fuels in power generation and other industries by capturing CO2, transporting and then pumping it into ...
De Coninck, Heleen, Gao, Lin, Jansen, Daan, Jin, Hongguang, Li, Sheng, Mikunda, Tom, Porter, Richard, Van Sambeek, Emiel, Wilco Dijkstra, Jan   +8 more
core  

An intelligent lithology identification method for sandstone and mudstone strata and its applications: A case study of the Jurassic strata in the Lunnan area, Xinjiang, China [PDF]

ObjectiveLithology identification lays the foundation for fine-scale reservoir evaluation. However, traditional identification methods generally utilize the interactive relationships between only 2‒3 logging parameters, suffering from low utilization ...
Chengguang ZHANG, Cong YANG, Dong WU, Feng CHEN, Ming CAI, Qingwen ZHOU, Wang LIN, Yuanjun ZHANG, Yuxin MIAO   +8 more
core   +1 more source