Showing 941 - 954 results of 954 for search '"coal mines"', query time: 0.06s Refine Results
  1. 941

    The dynamic characteristics of the shearer cable drag system. by Bo Xie, Feida Wang, Jing Liu, Zhanjun Xu, Shuaishuai Gao, Lijuan Zhao

    Published 2024-01-01
    “…Based on the 5615 working face of Beisu Coal Mine, a virtual prototype of the shearer cable drag system was developed using the MG2×70/325-BWD electric traction shearer as the carrier, in combination with CERO and ADAMS software. …”
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  2. 942

    Study on the mechanism and control of strong ground pressure in the mining of shallow buried close-distance coal seam passing through the loess hilly region by Yanpeng He, Qingxiang Huang, Li Ma

    Published 2025-01-01
    “…Taking the in the Zhangjiamao Coal Mine as the background, this study revealed the mechanism of high ground pressure when the working face of lower coal seam passes through the surface loess hilly region. …”
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  3. 943
  4. 944

    Continuous underground observation of the geomagnetic field in Xuzhou City, North China, and its time-varying characteristics by Mei Han, Mei Han, Lianghui Guo, Lianghui Guo, Lianghui Guo, Yun Wang, Yun Wang, Xiang Wang, Xiang Wang

    Published 2025-01-01
    “…In order to evaluate the underground electromagnetic environment at the Longdong coal mine area (LCMA) in Xuzhou City and establish an underground geomagnetic observatory, we conducted a pilot experiment of continuous geomagnetic observations synchronously underground and on the ground during May 2023. …”
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  5. 945

    Analysis of PM10 trends in open-pit mining: Assessing emission controls and WHO guideline compliance by Roberto Rojano, Heli A. Arregocés, Gloria Restrepo

    Published 2025-02-01
    “…This study evaluated the concentrations, trends, and variability of PM10 particulate matter in two Air Quality Monitoring Systems (CorpoGuajira's_AQMS and Cerrejón's_AQMS) in an open-pit coal mine in northeastern Colombia from 2010 to 2020. …”
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  6. 946

    Mine Flooding History of a Regional Below-Drainage Coalfield Dominated by Barrier Leakage (1970–2014) by Joseph J. Donovan, Eric F. Perry

    Published 2019-01-01
    “…A 44-year record of water level fluctuations in a series of adjacent closed underground mines documents the history of closure and mine flooding in the Fairmont Coalfield, one of the oldest coal mining districts in the Pittsburgh coal basin, West Virginia, USA. …”
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  7. 947
  8. 948

    Study on mechanical properties of sandstone damaged by blasting load under triaxial cyclic loading and unloading by Haibo Wang, Genshuo Zhu, Ziyi Lu, Qi Zong, Hao Wang

    Published 2025-01-01
    “…An increase in the confining pressure enhanced the deformation and failure resistance characteristics of the specimens. (4) Compared with those under conventional triaxial loading, specimens under cyclic loading and unloading failed faster after reaching the ultimate volumetric strain, and specimens damaged by blasting were more likely to fail. During deep coal mining, the bearing capacity and deformation resistance of rock masses damaged by blasting after repeated disturbance loads were greatly reduced. …”
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  9. 949

    Breaking law of overburden rock and key mining technology for narrow coal pillar working face in isolated island by Du Feng, Li Zhenhua, Li Songtao, Li Xiaolei, Li Guodong, Fan Xuan, Ren Hao, Cao Zhengzheng

    Published 2024-06-01
    “…Through statistical analysis of the types of residual coal and the mining techniques, the current research status of residual coal mining system in China has been summarized. Based on the safety recovery technology system for multi-type residual coal pillar resources at Zhaogu No.2 Mine, this paper focuses on narrow coal pillar working faces in sections with fully mined-out areas on both sides. …”
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  10. 950

    Research on the evolution and prediction of the heights of water-conducting fracture zones in overlying rocks during layered mining of extremely thick coal seams by MENG Hailun, CHENG Xianggang, QIAO Wei

    Published 2024-12-01
    “…Based on the geological conditions of the extremely thick coal seams in the Jurassic coalfields of Xinjiang, this research selected the parameters of the typical working face 9-15 (08) in the Liuhuanggou Coal Mine of the Zhunnan Coalfield in Xinjiang, quantitatively evaluated the development characteristics and evolution patterns of the overlying rock fracture fields under layered full-mechanized mining of extremely thick coal seams through numerical simulations and fractal geometry theory analysis. …”
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  11. 951

    Influence of magma intrusion and contact distance onthermal effects of low-temperature oxidation processes in coal by Zhijin YU, Ce JIN, Xu TANG, Zhipeng ZHANG, Hu WEN

    Published 2024-12-01
    “…Taking the −350 working face in the second mining area of the Xin'an Coal Mine as the engineering background, the coal samples were collected at different distances from the magma intrusion on the spot. …”
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  12. 952

    The study of mechanical properties and fracture evolution of coal-rock masses under hard roof-soft floor conditions by Jiajun Li, Yin Zhang, Chenchen Yang, Jiaqi Liu, Yu Zhou, Chunlin Li

    Published 2025-01-01
    “…Abstract As the depth of coal mining in China continues to increase, the fracturing of coal rock masses has an increasingly complex impact on the surrounding rock roadways. …”
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