Showing 681 - 700 results of 954 for search '"Coal mining"', query time: 0.06s Refine Results
  1. 681

    Gait and Stability Analysis of 3-PUU Wheel-legged Mobile Robot by Miao Zhiying, Li Ruiqin, Zhang Qisheng, Liang Jingjing, Meng Hongwei, Liang Shijie

    Published 2018-01-01
    “…The robot can be used in the rescue tasks such as underground coal mines and other dangerous environments.…”
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    Article
  2. 682

    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
  3. 683

    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
  4. 684

    Concept for evaluating the safety of a dynamically loaded gearbox reducer by Elizabeta Hristovska

    Published 2025-01-01
    “…This article presents a concept for evaluating the safety of a dynamically loaded reducer, specifically built into a rotating excavator used in surface coal mines for its working wheel. The presented concept offers three ways to evaluate safety: according to factors of safety, according to operating parameters, and according to load capacity and loads. …”
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    Article
  5. 685

    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
  6. 686

    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
  7. 687

    Constraining the Geochemical Fingerprints of Gases from the UK Carboniferous Coal Measures at the Glasgow Geoenergy Observatories Field Site, Scotland by Rebecca M. Chambers, Gareth Johnson, Adrian J. Boyce, Stuart M. V. Gilfillan

    Published 2023-12-01
    “…Usage of thermal energy contained in abandoned, flooded, coal mines has the potential to contribute to low carbon heating or cooling supply and assist in meeting net-zero carbon emission targets. …”
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    Article
  8. 688
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  10. 690
  11. 691

    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
  12. 692
  13. 693

    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. 694

    STUDY ON MECHANICAL CHARACTERISTICS AND VIBRATION CHARACTERISTICS OF TEMPORARY SUPPORT EQUIPMENT IN FULLY MECHANIZED MINING TUNNEL by LU JinNan, XIE Miao, MAO Jun

    Published 2016-01-01
    “…Using the Routh Hurwitz criterion as its dynamic stability judgment conditions,refer to the disturbance force mathematical model of commonly used in coal mine,combined with MATLAB and modern control theory,the vibration characteristics of the single support group of the advanced support equipment are simulated,and obtain the system dynamic response. …”
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    Article
  15. 695

    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. 696

    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. 697

    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. 698

    A Static Fracturing Technology to Enhance the Permeability of Coalbed: Mechanical Study by Long Wang, Baohua Guo, Zhaofeng Wang

    Published 2019-01-01
    “…Low permeability of coalbed has always been a main bottleneck impeding the safety production of coal mines and the high-efficient gas recovery. A static fracturing technology, relied on hydraulic-driving modules to expand outwards for producing artificial fissures in coalbed, is proposed here for coalbed reservoir stimulation. …”
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    Article
  19. 699

    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. 700

    Study on Seepage Simulation of High Pressure Grouting in Microfractured Rock Mass by Kai Wang, Lianguo Wang, Bo Ren, Hao Fan

    Published 2021-01-01
    “…In coal mines, under high in situ stress and strong mining activity, roadway surrounding rock commonly contains large amounts of larger fractures and microfractures. …”
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    Article