Showing 481 - 500 results of 954 for search '"Coal mining"', query time: 0.07s Refine Results
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    The Stability of Gob-Side Entry Retaining in a High-Gas-Risk Mine by Junwen Zhang, Yulin Li

    Published 2019-01-01
    “…There are series of problems faced by most of the coal mines in China, ranging from low-coal recovery rate and strained replacement of working faces to gas accumulation in the upper corner of coalfaces. …”
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    Article
  5. 485

    A GIS Based Unsteady Network Model and System Applications for Intelligent Mine Ventilation by Hui. Liu, Shanjun Mao, Mei. Li, Pingyang Lyu

    Published 2020-01-01
    “…The study is potential and is expected to guide the real-time coal mine safety production.…”
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    Article
  6. 486

    Variation Pattern of the Stress-Strain Curve of Concrete under Multifactor Coupling by Haijian Xie, Henglin Lv

    Published 2022-01-01
    “…The air shafts of coal mines contain solid, liquid, and gaseous substances that corrode concrete under conditions of relatively high temperature and humidity. …”
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    Article
  7. 487

    Experimental Study on Mechanical Properties and Acoustic Emission Characteristics of Water Bearing Sandstone under Stable Cyclic Loading and Unloading by Xinzhan Qin, Yu Zhou, Manchao He

    Published 2020-01-01
    “…Furthermore, considering the long-term effects of repeated pumping and drainage and hydrodynamic pressure on the surrounding rock in coal mines, a large amount of sandstone was collected from the Ruineng coal mine in Yan’an city to carry out a series of laboratory tests. …”
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    Multistage identification method for real-time abnormal events of streaming data by Hao Luo, Kexin Sun, Junlu Wang, Chengfeng Liu, Linlin Ding, Baoyan Song

    Published 2019-12-01
    “…Coal mine micro-seismic signal is of great importance in the investigation of vibration characteristic, attenuation law, and disaster assessment of coal mine disasters. …”
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    New type of hot spot cluster centered positioning algorithm and its application by Shao-wu ZHOU, Bo-wei HUANG, Zhao-fu ZENG, Ming-hui ZHOU, Jie ZHAN

    Published 2012-05-01
    “…Considering the facts that the personnel orientation in the coal mine was difficult,and the existing algorithm is of high fixed position error,a new algorithm of hot spot cluster centered positioning for terrain underground in the coal mine was designed.The locations of moving nodes in po ion area were classified by using the RSSI,and the blind spots problems of positioning,which was not explained by the locating method mentioned in the existing literatures,was solved efficiently by means of new algorithm.Besides,the algorithm improved the real time performance and the accuracy of positioning.The validity of new algorithm was verified by the result of numerical simulation and experiment.…”
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  16. 496

    Mechanical Behavior and Impact Resistance Tendency of Coal Mass with Different Water Content by Fei Liu, Yongsheng Han

    Published 2022-01-01
    “…As a major hidden danger of mine safety production, the impact resistance tendency of rock seriously restricts the safety and high yield of coal mine. At the same time, as one of the puzzles of rock mechanics, it has been perplexing many domestic and foreign scholars since the recorded rock burst in South Stafford coal mine in 1738. …”
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    Article
  17. 497

    Risk assessment of gas explosion based on fuzzy Bayesian network improved by entropy weight method by Wen HAN, Zhaoyang YU, Fei LIU, Haoyou ZHAO

    Published 2025-01-01
    “…In order to accurately and effectively evaluate the risk of gas explosion in coal mines, an improved fuzzy Bayesian network gas explosion risk assessment model based on entropy weight method is proposed. …”
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    Article
  18. 498

    New Insights into the Drill Cutting Characteristics and Fault Distribution in Gas-Containing Coal Seams by Xinghua Zhang, Haifeng Wang, Dan Zhao, Zheng Shang, Tianwei Ren, Shuaikang Geng, Xiaorui Hao, Chang Liu, Jinzhou Li

    Published 2022-01-01
    “…With coal seams of different buried depths in Luling Coal Mine, Yuenan Coal Mine, and Sihe Coal Mine with obvious difference in hardness and outburst hazards selected as the research objects, the morphological characteristics of a sample particle size such as the Rosin-Rammler distribution function, average particle size, cumulative mass distribution, and mechanical parameters such as particle strength and F value were statistically analyzed through drill cuttings related to sampling points at different positions of faults already known. …”
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  19. 499

    Study on the Support System Mechanism of Entry Roof with Roof Cutting Pressure Releasing Gob-Side Entry Retaining Technology by Xingen Ma, Guihe Li, Haitao Cao, Haijun Wang, Xiangyuan Shi, Qingquan Zhao, Zhengcan Han, Tianyi Zhang, Weiping Dai, Jiangling Zhang

    Published 2022-01-01
    “…Then, taking 8304 working face of Tashan Coal Mine as an example, the stress distribution characteristics of the surrounding rock in different entry retaining stages are simulated by numerical simulation, which provides an important reference for the field support design and puts forward an idea of hierarchical support. …”
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