Showing 521 - 540 results of 750 for search '"Coal mining"', query time: 0.08s Refine Results
  1. 521

    Failure Mechanism and Stability Control of Surrounding Rock of Docking Roadway under Multiple Dynamic Pressures in Extrathick Coal Seam by Xiangye Wu, Shuai Wang, Chen Tian, Changxing Ji, Jingya Wang

    Published 2020-01-01
    “…Under the geological environment of No. 16 extrathick coal seam in the Laoshidan coal mine and taking the working face 031604 as the research background, the reasonable docking position selection of the withdrawal roadway and the docking roadway in the middle mining period and the surrounding rock stability control problems of the withdrawal roadway and the docking roadway during the final mining period were studied by using the methods of field theoretical analysis, numerical simulation, and field measurement. …”
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    Article
  2. 522

    Mechanism of Fire Prevention with Liquid Carbon Dioxide and Application of Long-Distance Pressure-Holding Transportation Technology Based on Shallow Buried and Near-Horizontal Goaf... by Naifu Cao, Yuntao Liang

    Published 2021-01-01
    “…Taking the Huojitujing well of Daliuta Coal Mine in Shendong mining area as the industrial test site, an intelligent pressure-holding transportation of liquid CO2 in the 1000 m transportation pipeline was developed. …”
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    Article
  3. 523

    Characteristics of Stratum Structure and Fracture Evolution in Stratified Mining of Shallow Buried High-Gas-Thick Coal Seam by Similarity Simulation by Qin Guangpeng, Cao Jing, Wang Chao, Wu Shuo, Zhai Minghua

    Published 2021-01-01
    “…The main coal seam thickness of Rujigou Coal Mine exceeds 20 m, due to the high gas content of the coal seam, it is prone to spontaneous combustion, and the stratified mining method is adopted. …”
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    Article
  4. 524

    Study on Influence Laws of Strata Behaviors for Shallow Coal Seam Mining beneath Gully Terrain by Zhiqiang Wang, Jingkai Li, Chao Wu, Wenyu Lv, Jiao Zhang, Peng Wang, Zhen Li, Hengzhe Qu

    Published 2021-01-01
    “…Taking 3302 mining face of Zhujiamao Coal Mine as the engineering background, the laws of strata behaviors for shallow coal seam mining beneath gully terrain are studied by field detection, theoretical analysis, and numerical simulation. …”
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    Article
  5. 525

    Application of Functional Link Artificial Neural Network for Prediction of Machinery Noise in Opencast Mines by Santosh Kumar Nanda, Debi Prasad Tripathy

    Published 2011-01-01
    “…The case study is based on data collected from an opencast coal mine of Orissa, India. From the present investigations, it could be concluded that the FLANN model give better noise prediction than the PPN and LeNN model.…”
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    Article
  6. 526

    Theory and Application of Gob-Side Entry Retaining in Thick Three-Soft Coal Seam by Junchao Shen, Ying Zhang

    Published 2021-01-01
    “…In this paper, based on the geological conditions of a coal mine in China, we propose a novelty approach of GER in thick three-soft coal seam (it means a single seam with a soft roof and a soft floor). …”
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    Article
  7. 527

    Fracture Characteristics of Polyurethane Grouting Materials Based on Acoustic Emission Monitoring by Baihui Ren, Jianjun Shen, Weitao Liu, Yingying Hu, Qing Cao

    Published 2021-01-01
    “…In this study, 16 groups of tests were designed by the orthogonal test method, and a PU grouting material was prepared, which can be used for the construction of sealing wall in mined-out area of coal mine. The basic properties of the material were measured. …”
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    Article
  8. 528

    Stochastic Generation of Subsurface Profiles for Realistic Simulation of Through-the-Earth Communication Systems by Josua Daniel Pena Carreno, A. Judson De Barros Braga

    Published 2019-01-01
    “…This model can be used to estimate link budget for TTE communication in coal mines.…”
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    Article
  9. 529

    Geological Structure Exploration of Karst Collapse Column and Evaluation of Water Insulation Properties of the Mud Part by Shijian Yu, Jiyang Liu, Peng Bai, Hongtao Xu, Runshan He, Yongshen Wang, Dawei Yin

    Published 2021-01-01
    “…In this study, the X5 KCC in Shiquan Coal Mine was investigated by means of controlled source audio magnetotelluric exploration and borehole television. …”
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    Article
  10. 530

    Supporting Technology Research in Deep Well Based on Modified Terzaghi Formula by Wen-qing Peng, Wei-jun Wang, Chao Yuan

    Published 2018-01-01
    “…In order to solve the difficult problem of supporting roadway with large cross section and broken surrounding rock, the large-section inclined shaft of Pingdingshan Coal Mine is taken as the research instance. In this paper, a modified formula for the Terzaghi ultimate bearing capacity of a foundation is established based on rock mass strength criteria. …”
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    Article
  11. 531

    Control of Water Inrush from Longwall Floor Aquifers Using a Division Paste Backfilling Method by Qingliang Chang, Xingjie Yao, Shiguo Ge, Ying Xu, Yuantian Sun

    Published 2021-01-01
    “…Aiming at the problem of the safety mining problems of longwall paste filling working face under buildings on high confined water in the Daizhuang Coal Mine, the paste filling mining method was used. …”
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    Article
  12. 532

    A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams by Like Wei, Qingxin Qi, Hongyan Li, Bin Zhang, Yongren Wang, Linghai Kong

    Published 2015-01-01
    “…The field application showed that the early warning method had avoided miners suffering from all support crushing accidents in Shigetai coal mine.…”
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    Article
  13. 533

    Application of Distributed Optical Fiber Technology for Coal Bump Prevention by Han Liang, Jun Han, Zuoqing Bi

    Published 2021-01-01
    “…The 8939 working face in Xinzhouyao coal mine is a high coal bump proneness panel. For coal bump prevention, rib holes are drilled for pressure relief purpose. …”
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    Article
  14. 534

    Research on Mechanisms and Control Measures of Surrounding Rock Disaster in Large Section Roadway with Top Coal under the Influence of Tectonic Stress by Yang Yu, Jianfei Lu, Dingchao Chen, Yuxin Pan, Xiangqian Zhao, Cheng Chen

    Published 2021-01-01
    “…Based on the research background of large section roadway with top coal (LSRTC) in thick coal seam mining in Wangzhuang Coal Mine, Shanxi Province, China, catastrophe characteristics of the surrounding rock of the LSRTC were investigated and summarized. …”
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    Article
  15. 535

    Study on Deformation and Failure Characteristics of Surrounding Rock of Overlying Roadway under Upward Mining in the Deep Mine by Teng-Gen Xiong, Ju-Cai Chang, Kai He, Ya-Feng Su, Chao Qi

    Published 2021-01-01
    “…To study the impact of mining of the lower protective layer on the deformation and failure characteristics of the upper roadway, these characteristics of an 879 gas drainage roadway were studied and analyzed during the mining of the II 1051 working face of the Zhuxianzhuang coal mine using similar simulation experiments and numerical simulation methods. …”
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    Article
  16. 536

    Investigations of Coal-Rock Parting-Coal Structure (CRCS) Slip and Instability by Excavation by Guang-Jian Liu, Heng Zhang, Ya-Wei Zhu, Wen-Hao Cao, Xian-Jun Ji, Cai-Ping Lu, Yang Liu

    Published 2021-01-01
    “…Slip and instability of coal-rock parting-coal structure (CRCS) subjected to excavation disturbance can easily induce coal-rock dynamic phenomena in deep coal mines. In this paper, the failure characteristics and influencing factors of CRCS slip and instability were investigated by theoretical analysis, numerical simulations, and field observations. …”
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    Article
  17. 537

    Integrated Navigation Fusion Strategy of INS/UWB for Indoor Carrier Attitude Angle and Position Synchronous Tracking by Qigao Fan, Yaheng Wu, Jing Hui, Lei Wu, Zhenzhong Yu, Lijuan Zhou

    Published 2014-01-01
    “…Finally, an indoor experiment platform is established to verify the integrated navigation theory of INS/UWB, which is geared to the needs of coal mine working environment. Static and dynamic positioning results show that the INS/UWB integrated navigation system is stable and real-time, positioning precision meets the requirements of working condition and is better than any independent subsystem.…”
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  18. 538
  19. 539
  20. 540

    Failure Mechanism and Control Technology of Thick and Soft Coal Fully Mechanized Caving Roadway under Double Gobs in Close Coal Seams by Shengrong Xie, Xiaoyu Wu, Dongdong Chen, Yaohui Sun, En Wang, Xiaowei Wu, Xiaobo Duan, Zaisheng Jiang, Pengyu Qi, Songhao Shi

    Published 2020-01-01
    “…In view of the above problems, taking the close coal seam mining in the Zhengwen Coal Mine as the engineering background, a theoretical calculation is used to obtain the loading of the step coal pillars and the slip line field distribution of the floor depth. …”
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    Article