Showing 521 - 540 results of 750 for search '"coal mines"', query time: 0.05s Refine Results
  1. 521

    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
  2. 522

    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
  3. 523

    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
  4. 524

    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
  5. 525

    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
  6. 526

    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
  7. 527

    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
  8. 528

    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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    Article
  9. 529
  10. 530

    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
  11. 531
  12. 532

    Mechanism of Coal Bump among Mine Group under the Control of Large Geological Body: A Case Study of Yima Mining Area, China by Yizhe Li, Shankun Zhao, Qingxin Qi, Pengzhi Pan, Xiangzhi Wei, Yin Wang, Ningbo Zhang, Yang Zhao, Haitao Chai, Qilin Hao

    Published 2021-01-01
    “…Coal bump often occurs in coal mining among many working faces in mine group under the control of large geological bodies. …”
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    Article
  13. 533

    The Research of the Influence on Stress below the Roadway Floor of the Coal Seam Becoming Thin by Liang Chen, Qi Liu

    Published 2022-01-01
    “…Stress is the important factor of dynamic disaster in the coal mine. Stress is closely related with surrounding geological conditions. …”
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    Article
  14. 534

    Coal Gangue Utilization: Applications, Challenges, and Sustainable Development Strategies by Yinghui Sun, Bohao Bai, Xu Yang, Shujun Zhu, Jilin Tian, Zhuozhi Wang, Li Xu, Lianfei Xu, Boxiong Shen

    Published 2025-01-01
    “…Coal gangue is a kind of typical by-product emitted during the coal mining and washing process. With the increase in coal resource utilization, a large amount of coal gangue was not reasonably utilized, causing environmental pollution and resource waste. …”
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    Article
  15. 535

    Mechanism of Coal Seam Permeability Enhancement and Gas Outburst Prevention under Hydraulic Fracturing Technology by Xinhua Wu, Tao Zhu, Yufei Liu, Guoyu Zhang, Guanghui Zheng, Fengnian Wang

    Published 2022-01-01
    “…In view of the high gas pressure and low permeability of deep coal seam, it is difficult to control gas, which affects the safety production of coal mine. The technical scheme of hydraulic fracturing to improve the permeability of coal seam is put forward, and the gas drainage technology is used to control the gas emission of coal seam. …”
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    Article
  16. 536

    Zonal Disintegration Mechanism of Deep Rock Masses under Coupled High Axial Geostress and Blasting Load by Pu Yuan, Ying Xu

    Published 2018-01-01
    “…Taking the deep tunnel of Dingji coal mine in China as engineering background, the number and width of fracture zones are determined by deduced elastic stress field and modified Hoek-Brown criterion. …”
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    Article
  17. 537

    Presplit Blasting Technique in Treating Hard Overlying Strata: From Numerical Simulation to Field Practice by Baisheng Zhang, Zhiping Yang, Xuming Yang, Shuai Zhang

    Published 2021-01-01
    “…Then, the field practice in accordance with the determined parameters was carried out in Yuwu coal mine. The effectiveness of the presplit blasting technique was well verified when the microstructures of the surrounding rock were investigated. …”
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    Article
  18. 538

    Numerical Analysis of the Effect of Heterogeneity on Underground Roadway Stability under Dynamic Loads by Tao Guo, Hao Feng, Zequan Sun, Yang Zhao, Xingyu Wu, Xinggang Xu, Lishuai Jiang

    Published 2021-01-01
    “…With the increasing depth of coal mining and expanding mining scale, the rocks surrounding deep roadways are in a complex mechanical condition of frequent dynamic disturbance. …”
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    Article
  19. 539

    Study on Monitoring Rock Burst through Drill Pipe Torque by Zhonghua Li, Liyuan Zhu, Wanlei Yin, Yanfang Song

    Published 2015-01-01
    “…The results are important for the forecast of rock burst in coal mine.…”
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    Article
  20. 540

    The Stability Analysis of Roadway near Faults under Complex High Stress by Biao Zhang, Huaqiang Zhou, Qingliang Chang, Xu Zhao, Yuantian Sun

    Published 2020-01-01
    “…Based on geological conditions of 3318 working face haulage roadway in Xuchang Coal Mine, as well as the space-time relationship with surrounding gob, theoretical analysis and numerical simulation were used to study the influence of fault structure on the original rock stress of 3318 working face transport roadway. …”
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    Article