Showing 421 - 440 results of 750 for search '"Coal mining"', query time: 0.06s Refine Results
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    Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey Strata by Hu He, Linming Dou, Anye Cao, Jun Fan

    Published 2015-01-01
    “…The dynamic disasters are aggravating with the increase of exploitation scale and intensity in Chinese coal mines, to further understand this problem, we studied the mechanisms of mining tremors induced by key strata movement and instability under large scale exploitation. …”
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    Article
  5. 425

    Numerical Study of Damage to Rock Surrounding an Underground Coal Roadway Excavation by Jiangbo Wei, Shuangming Wang, Zhou Zhao, Delu Li, Lipeng Guo

    Published 2020-01-01
    “…In coal mines, underground roadways are required to transport coal and personnel. …”
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    Article
  6. 426
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    Stability and Control of Retracement Channels in Thin Seam Working Faces with Soft Roof by Binbin Qin, Fulian He, Xiaobing Zhang, Xuhui Xu, Wei Wang, Liang Li, Chen Dou

    Published 2021-01-01
    “…The safe and efficient mining of the coal mine is ensured, and the research results can provide guidance for similar working faces.…”
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    Article
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  10. 430

    Roadway Deformation and Control under Multidisturbed Secondary High Stress by Xiaoguang Sun, Haibin Wang, Xiaofang Wo, Zhimeng Sun, Wenliang Sun, Chunge Li

    Published 2022-01-01
    “…Aiming at the serious deformation and failure of mining roadway under the condition of high secondary stress in Xuchang Coal Mine, Shandong Province, the deformation law of surrounding rock under the influence of high secondary stress in the original support belt transport roadway was analyzed by the method of field measurement and numerical simulation, and the control scheme of surrounding rock was put forward. …”
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    Influence of Mine Earthquake Disturbance on the Principal Stress of the Main Roadway near the Goaf and Its Prevention and Control Measures by Penghui Guo, Jiazhuo Li, Xiqing Hao, Heng Cui, Lihua Tian, Wenhao Xie, Jiaqi Chu

    Published 2021-01-01
    “…The research results can provide a certain reference basis for coal mine roadway pressure relief and reducing disaster conditions.…”
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    Article
  13. 433

    Study on Stress Relief of Hard Roof Based on Presplitting and Deep Hole Blasting by Peng Gong, Yongheng Chen, Zhanguo Ma, Shixing Cheng

    Published 2020-01-01
    “…With the combination of the two blasting methods, the end-mining coal pillar size of Luning Coal Mine can be reduced to 60 m. The method combining presplitting and deep hole blasting can effectively reduce the end-mining coal pillar size and reduce the impact of mining on the deformation of the dip roadway.…”
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    Article
  14. 434

    Modelling of P-wave velocity changes in coal seams with increased depth: a case study by Maciej Łapczyński, Zenon Pilecki, Krzysztof Krawiec, Artur Słomian, Elżbieta Pilecka, Tomasz Łątka

    Published 2025-01-01
    “…The research was performed at the Zofiówka Coal Mine in the geological and mining conditions of the Upper Silesian Coal Basin in Poland. …”
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    Article
  15. 435

    Numerical Simulation of Mining-Induced Damage in Adjacent Tunnels Based on FLAC3D by Guorui Wang, Peixian Li, Qiang Wu, Ximin Cui, Zhixiang Tan

    Published 2021-01-01
    “…The tunnels were established crossing over the old goafs of a coal mine. The tunnels have been damaged three times between 2014 and 2016. …”
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    Article
  16. 436

    Research on Structural Characteristics of Dynamic Nuclear Zone in Dynamic System of Coal and Rock by Hai Rong, Bing Liang, Hongwei Zhang, Feng Zhu

    Published 2019-01-01
    “…In order to calculate the concrete scale range of coal and rock mass in rockburst of different degrees of danger and to prevent and control rockburst in coal mines, the concept of dynamic system of coal and rock is put forward in this paper. …”
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    Article
  17. 437

    Deformation Caused by Dynamic Load and Support Requirements in a Deep Gob-Side Entry Rock Mass by Yandong Zhang, Yongjie Yang, Changhua Zhuge

    Published 2019-01-01
    “…Gob-side entries in deep coal mines can be subjected to dynamic loading when driving along the goaf. …”
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    Article
  18. 438

    Failure Mechanism of a Coal-Rock Combined Body with Inclinations of Structural Planes and a Calculation Model for Impact Energy by Yi-Chao Zhao, Ming-Shi Gao, Yong-Liang He, Dong Xu

    Published 2019-01-01
    “…The proposed calculation model for impact energy revealed the mechanical essence of energy accumulation and release of a CR combined body, providing a reference for investigating rock burst in coal mines.…”
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    Article
  19. 439

    Characterization and Identification of Coal and Carbonaceous Shale Using Visible and Near-Infrared Reflectance Spectroscopy by En Yang, Shirong Ge, Shibo Wang

    Published 2018-01-01
    “…Because of the high organic carbon concentration in carbonaceous shale, a large proportion of carbonaceous shales are often misclassified into coals using visible and near-infrared (VIS-NIR) reflectance spectroscopy in the field of coal-gangue identification of hyperspectral remote sensing of coal mine. In order to study spectral characterization of coal and carbonaceous shale, three bituminite samples and three carbonaceous shales were collected from a coal mine of China, and their spectral reflectance curves were obtained by a field spectrometer in the wavelength range of 350–2500 nm. …”
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