Results 41 to 50 of about 267 (157)

Fracture activation in the overburden and aquiclude stability under the mining of close-distance coal seams

Meitian dizhi yu kantan
BackgroundIn the Jurassic coalfield of northern Shaanxi Province, the repeated mining of close-distance coal seams exacerbates the activation of fractures in the overburden.
Jian CAO, Haitao SU, Chao WANG, Jianwei LI, Liang LI, Xuwei MAO   +5 more
doaj   +1 more source

Application of unmanned aerial vehicle in the investigation of hidden disasters on coal mine surface

Meikuang Anquan, 2021
In view of the problems of slow speed, long cycle and terrain limitation in the investigation of hidden disasters on the surface of traditional coal mines, taking the shallow coal seam production coal mine in Shenbei Mining Area of Jurassic coalfield in
WU Minjie
doaj   +1 more source

Biomarker signatures of the Middle Jurassic coals from the Zhangjialiang mine in Dongsheng coalfield, North China: Implications for palaeoenvironment and palaeovegetation

Energy Exploration & Exploitation, 2022
The study on the Zhangjialiang No. 2 coal of Middle Jurassic Yan'an Formation in the northeastern Ordos Basin has been analyzed by gas chromatography-mass spectrometry (GC-MS) to determine geochemical characteristics and reconstruct palaeovegetation and palaeoclimate changes. The distribution of n-alkanes is mainly unimodal, with a
Ke Zhang, Lin Xiao, Zhixiang Shi, Wenwu Zhao, Zeqi Tian, Zhiyong Wang, Xu Guo, Jianguo Yao, Jialiang Ma, Maksim G Blokhin, Cunliang Zhao   +10 more
openaire   +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   +1 more source

Experimental and Theoretical Investigation on the Progressive Breaking Law of Thick and Hard Rock Strata in Deep Mining

Energy Science &Engineering, Volume 14, Issue 4, Page 1881-1902, April 2026.
This work reveals the “C‐Y,” double “Y,” “π,” and “Y” fracture modes of thick, hard strata and their progressive breaking process (O‐F‐R/S mode), providing a theoretical basis for controlling strong ground pressure in deep mining. ABSTRACT In response to the dynamic hazards caused by the fracture of thick‐hard strata in deep mining, this study ...
Meilu Yu, Jianping Zuo
wiley   +1 more source

Water‐Inrush Risk Assessment of Roof‐Confined Aquifer Strata Based on FAHP–RF Model in the Arid–Semiarid Ecotone: A Case Study of Zhuanlongwan Coal Mine

Geofluids, Volume 2026, Issue 1, 2026.
Water inrush poses a serious threat to the safety and sustainability of coal mining operations, particularly in arid–semiarid regions where confined aquifers overlie coal seams. Therefore, an accurate assessment of roof water inrush risk is essential to prevent water hazards on the roof.
Sen Xue, Qichen Guo, Qiqing Wang, Yun Wu, Menglong Zhang, Zhen Song, Wenping Li, He Yongliang   +7 more
wiley   +1 more source

groundwater, drainage experiment, evolution of flow field, hydrogeological parameters, steady flow,

Meikuang Anquan, 2020
The first mining face 122106 in Caojiatan Coal Mine was taken as the research object. The main water filling sources and water filling channels during the mining period of the working face are determined.
HUANG Hao, FANG Gang, LIANG Xiangyang, LIU Yang, HUA Zhaolai, LYU Yang
doaj   +1 more source

Deformation and Fracture Behavior of Argillaceous Weakly Cemented Rock Under Hydromechanical Interaction: Experimental Study and UDEC‐Trigon Simulation

Geofluids, Volume 2026, Issue 1, 2026.
This study investigates innovative methods to address the stability issues of roadways with argillaceous weakly cemented surrounding rock (AWCR) in western China′s coal mining regions. The research focuses on the hydromechanical properties of AWCR, analyzing its mineral composition, pore structure, and microstructure, which reveal high porosity and ...
Zhijiang Lun, Zizheng Zhang, Weiguang Zhang, Honglei Wei, Shuaigang Liu, Tianshou Ma   +5 more
wiley   +1 more source

Distribution and controlled geological factors of oil-rich coal in shaanxi province

Meitan kexue jishu, 2023
The green, clean and efficient utilization of coal is an important way for the sustainable development of coal industry. Shaanxi province is rich in coal resources, which are mainly distributed in the five coal fields in the north of Shaanxi province ...
YANG Fu, DUAN Zhonghui, MA Li, FU Deliang, TIAN Tao, HE Dan, YUE Mingjuan   +6 more
doaj   +1 more source

Constraints on Magma Pressure Distribution During Long Range Lateral Propagation of Giant Radial Dyke Swarms

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract Giant dyke swarms are important but enigmatic components of magma transport in the Earth and terrestrial planets. Although widely documented on Earth, Venus, and Mars as extending laterally for 100–1,000 s of kilometers from their magma sources, the reasons for this extraordinary lateral propagation are not known.
M. Foschi, J. A. Cartwright
wiley   +1 more source