Showing 521 - 540 results of 954 for search '"Coal mining"', query time: 0.07s Refine Results
  1. 521
  2. 522
  3. 523
  4. 524
  5. 525
  6. 526

    Microseismic Response Characteristics Induced by Mining Activities: A Case Study by Xuesong Bai, Zhi Tang, Tao Zhao, Xiaoyang Cheng, Kai Chen

    Published 2021-01-01
    “…For deep coal mines, geological disturbances or mining activities can cause damage to coal and rock masses, easily inducing dynamic disasters such as rock bursts or coal and gas outbursts, which seriously threaten the safety production of coal mine. …”
    Get full text
    Article
  7. 527

    Dynamics and Statics Analysis of Manipulator of Coalmine Detection Robot by Li Yang, Liu Sumei, Qu Dongdong, Shi Mingming

    Published 2017-01-01
    “…Aiming at the actual situation of coal mines unmanned area,a four wheels drives small space detecting robot system for collecting information and samples of the underground environment is designed and developed. …”
    Get full text
    Article
  8. 528
  9. 529

    Overlying strata movement law and rockburst prevention & control for fully mechanized top coal caving face in extra-thick coal seams by Hai Rong, Longyue He, Yadi Wang, Xiangzhi Wei, Shilong Wei, Suihan Yang, Jincheng Li, Linlin Chen

    Published 2025-02-01
    “…Taking the 12,240 working face of Gengcun Coal Mine as the engineering background, initially, the calculation formula for the collaborative deformation load of hard rock strata and the formula for the instability scale of hard rock strata are employed to precisely ascertain the position and instability scale of the key strata. …”
    Get full text
    Article
  10. 530

    Evolution characteristics of overburden structure in inclined fully mechanized caving under residual coal pillars of the upper layer by LIU Yong, WANG Hongwei, WU Xuesong, TIAN Chengpeng, GUAN Rongfu, NIE Yunxiao, FAN Zhiwei, CAO Peipei

    Published 2024-12-01
    “…Based on the 250203 lower fully mechanized caving face at Yanbei Coal Mine of Gansu Huating Coal Power Co., Ltd., methods of physical similarity simulation experiments, numerical modeling, and field measurements were applied to study the overburden movement and stress distribution evolution characteristics under residual coal pillars of the upper layer during inclined fully mechanized caving. …”
    Get full text
    Article
  11. 531
  12. 532

    Analysis on Rock Burst Risks and Prevention of a 54 m-Wide Coal Pillar for Roadway Protection in a Fully Mechanized Top-Coal Caving Face by Zhihua Li, Ke Yang, Jianshuai Ji, Biao Jiao, Xiaobing Tian

    Published 2021-01-01
    “…A case study based on the 401103 fully mechanized caving face in the Hujiahe Coal Mine was carried out in this research to analyze the rock burst risks in a 54 m-wide coal pillar for roadway protection. …”
    Get full text
    Article
  13. 533
  14. 534

    Optimization of turbidity and iron removal process for mine reuse water based on response surface methodology by LUO Jianying, ZHU Junzhao, YANG Zaijun, YANG Jianchao, WANG Jian, GUO Zhongquan

    Published 2024-12-01
    “…Response surface methodology(RSM) was used to optimize the turbidity and iron removal coagulation process for coal mine reuse water. On the basis of single-factor experiments, pH, coagulant dosage and aeration time were selected as influencing factors, turbidity removal efficiency and total iron removal efficiency were taken as the response values, three-factor three-level experimental design was carried out by using Box-Benhnken design(BBD), to study the effects of individual and interactive interactions between the respective variables on the response values. …”
    Get full text
    Article
  15. 535

    Analysis of the Occurrence Mechanism for Coal and Gas Outburst Based on Multiple Discriminant Indices by Hai Rong, Hongwei Zhang, Bing Liang, Weihua Song

    Published 2019-01-01
    “…In order to reveal the occurrence mechanism of coal and gas outburst and optimize the measures to prevent the disaster, a coal mine in Henan Province was undertaken as the research background. …”
    Get full text
    Article
  16. 536
  17. 537

    A Control Approach of the Roof in No-Pillar Roadway Formed by Roof Cutting and Pressure Releasing by Qingnan Lou, Tingchun Li, Qingwen Zhu, Shanyuan Wu, Ming Yun, Renle Zhao

    Published 2021-01-01
    “…Based on the Qiuji coal mine’s background, the numerical and field test study is conducted to verify the theoretical analysis, and the allowable variation range of roof cutting distance is obtained. …”
    Get full text
    Article
  18. 538
  19. 539

    Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes by Tong-qiang Xia, Jiao-fei He, Zi-long Li, Xiao-yan Sun, Dun-shuai Sun, Jian-hang Lu, Hao-jie Cui

    Published 2022-01-01
    “…Finally, Comsol With Matlab is used to solve the multiconstraint nonlinear optimization problem of gas drainage engineering parameters along coal seam in 18401 working face of Tunlan Coal Mine. The effect of actual gas extraction investigation is very remarkable, which provides a quantitative calculation basis for scientific gas extraction in coal mine.…”
    Get full text
    Article
  20. 540

    Comprehensive characterization of pore structure in coal seams with abnormal gas emission in deep close range coal seam clusters by Anying YUAN, Xiaolu YANG, Junling HOU, Guangsheng FU

    Published 2024-12-01
    “…Coal and gas outburst accidents have always been a major problem in coal mine safety production. Pores and fissures in coal are the main places for gas adsorption and migration. …”
    Get full text
    Article