Results 21 to 30 of about 344 (181)

Exploration technology of integrated air leakage channel of shallow buried coal seam in northern Shaanxi Province

Meikuang Anquan, 2023
Taking the fire-threatened mines in the shallow buried coal seam of the Jurassic coalfield in northern Shaanxi Province as the research object, the high-resolution UAV visible light and thermal infrared dual-light low-altitude remote sensing, handheld ...
WANG Haijun, WU Yan, MA Liang, CHEN Chongfeng, SUN Baoping, WANG Xiangye, WU Minjie, LIU Shande
doaj   +2 more sources

Geochemical characteristics of Jurassic high-sodium coal in Tatuo Coal Mine, Qinghai Province, China

Energy Exploration & Exploitation, 2023
Sodium in the coals of West China has received persistent attention due to its high contents and severe pollutions’ problems during coal utilization.
Jun Wang, Zewei Wang, Zhi Yu, Panchal Balaji, Jie Shi, Yanli Yang   +5 more
doaj   +2 more sources

Petrographic Controls on Pore and Fissure Characteristics of Coals from the Southern Junggar Coalfield, Northwest China

Energies, 2018
The productive potential of coalbed methane projects is controlled by pore and fissure characteristics, which are intrinsically related to coal petrology. This work attempts to identify the influence of petrographic factors on the development of pore and
Sandong Zhou, Dameng Liu, Yidong Cai, Zuleima Karpyn, Yanbin Yao   +4 more
doaj   +2 more sources

Characteristics and prevention and control techniques of typical water hazards in coal mines in Shaanxi Province [PDF]

Meitan xuebao
Shaanxi province is rich in coal resources and is one of the main coal-producing provinces in China, with a coal production of 746 million tons in 2022. Due to the obvious differences in geological and hydrogeological conditions in the coal mining areas ...
Shuning DONG, Min FAN, Xiaoming GUO, Yingfeng LIU, Kang GUO, Zhongkui JI, Chaofeng LI, Xiaoyuan XUE   +7 more
doaj   +2 more sources

Study on characterization of sandstone pore structure and seepage mechanism based on NMR and CT technology. [PDF]

PLoS ONE
Coal-seam roof water disasters severely constrain safe and high-efficiency coal production. Integrating NMR, X-CT, Avizo, Netfabb, and Comsol, we systematically characterized pore architecture and flow behavior for the coarse, medium, and fine sandstones
Songxin Zhao, Kaide Liu, Chaowei Sun, Wenping Yue, Qiyu Wang, Yu Xia, Xinping Wang   +6 more
doaj   +2 more sources

Water abundance evaluation of weathered bedrock aquifers based on FAHP and coefficient of variance method

Meikuang Anquan, 2023
The weathering at the top of bedrock in Jurassic coalfield in northern Shaanxi is strong, and the formed weathered bedrock aquifer is the main water filling source of the mine, which poses a serious threat to the safe mining of the mine.
BAI Yang, NIU Chao, LI Fan, XIANG Min, ZHAO Shuhui
doaj   +2 more sources

Hydrochemistry characteristics and connection of aquifers in deep karst mine

Meikuang Anquan, 2023
In recent years, mine water inrush accidents occurred several times in North China type coalfield during the mining process of the upper group of coal, and possessed great threat.
XU Kaiqing, QIAO Wei, LI Wenping, FENG Lushun, LIU Mengnan, CHENG Xianggang
doaj   +2 more sources

The Hydrogeochemical Characteristics and Formation Mechanisms of the High-Salinity Groundwater in Yuheng Mining Area of the Jurassic Coalfield, Northern Shaanxi, China

Water
In the Yuheng mining area (Jurassic coalfield, northern Shaanxi, China), the Yan’an Formation groundwater is characterized by elevated salinity, posing challenges for mine water pollution control and regional water resource management. However, the spatial distribution patterns and formation mechanisms of this high-salinity groundwater remain poorly ...
Yuanhong Han, Hongchao Zhao, Yongtao Ji, Yue Wang, Liwei Zhang   +4 more
openaire   +2 more sources

Significant enrichment of Ga, Rb, Cs, REEs and Y in the Jurassic No. 6 coal in the Iqe Coalfield, northern Qaidam Basin, China—A hidden gem

Ore Geology Reviews, 2017
Abstract This paper presents new data concerning the mineralogy and trace element geochemistry of the enriched rare metals in the Jurassic No. 6 coal from the Iqe Coalfield, Qaidam Basin, China. The conclusions of this study are based on new data and evidence that suggest the considerable enrichment of Ga-Rb-Cs-REEs and Y in the No. 6 coal of the Iqe
Bangjun Liu, Zhongsheng Li, Yuzhuang Sun   +2 more
exaly   +2 more sources

Organic geochemistry of Middle Jurassic coal seam in the Sandaoling Coalfield, Northwest China: Insights into the depositional environment

Energy Exploration & Exploitation
The study of coal seams provides valuable insights into the environmental changes that have occurred throughout Earth's geological history. Coal formation was notably widespread during the Jurassic period in mid-latitude East Asia.
Yan Meng, Ning Zhang, Dan Tian, Weixu Li, Vivek Mishra, Yun Xu   +5 more
doaj   +2 more sources