Showing 821 - 840 results of 4,780 for search '"mining"', query time: 0.12s Refine Results
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    Research of the Backfill Body Compaction Ratio Based on Upward Backfill Safety Mining of the Close-Distance Coal Seam Group by Xingping Lai, Leiming Zhang, Yun Zhang, Pengfei Shan, Peifeng Wan, Kaiwen Mu

    Published 2022-01-01
    “…The lower coal seam engineering safety BBCR of upward backfill mining in the Dafosi Coal Mine was 87.2%, and the close-distance coal seam group safe upward mining was realized.…”
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    Article
  3. 823

    Order Batching in Warehouses by Minimizing Total Tardiness: A Hybrid Approach of Weighted Association Rule Mining and Genetic Algorithms by Amir Hossein Azadnia, Shahrooz Taheri, Pezhman Ghadimi, Muhamad Zameri Mat Saman, Kuan Yew Wong

    Published 2013-01-01
    “…First of all, weighted association rule mining has been used to calculate associations between orders with respect to their due date. …”
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    Article
  4. 824
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    Parameter Acquisition Study of Mining-Induced Surface Subsidence Probability Integral Method Based on RF-AGA-ENN Model by Jinman Zhang, Liangji Xu, Jiewei Li, Yueguan Yan, Ruirui Xu

    Published 2022-01-01
    “…The mining of underground coal resources can trigger geological hazards such as subsidence basins, cave-in pits, and step cracks. …”
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    Article
  7. 827
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    Failure Characteristics and Stability Control of Bolt Support in Thick-Coal-Seam Roadway of Three Typical Coal Mines in China by Zhe Xiang, Nong Zhang, Deyu Qian, Zhengzheng Xie, Chenghao Zhang, Feng Guo, Sujian Wang

    Published 2021-01-01
    “…Based on field observations, the failure mechanism of selected roadway failures under distinct conditions at three representative coal mines in eastern and western China was analyzed. …”
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  9. 829
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    Dynamic Influence of Near-Source Seismic Ground Motion on Underground Mine Working Stability Using Time-Frequency Analysis by Adam Lurka, Grzegorz Mutke, Piotr Małkowski

    Published 2021-01-01
    “…Peak particle velocity parameter is very useful in assessing underground mine working stability. Its application is widespread and requires additional analysis of the dominant frequency of the seismic signal. …”
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    Article
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    The Interactions among the Heavy Metals in Soils and in Weeds and Their Antioxidant Capacity under the Mining Activities in Thai Nguyen Province, Vietnam by Ngoc-Lien Nguyen, Cam-Tu Vu, Hien-Minh To, Hoang-Nam Pham, Hai-Dang Nguyen, Tien-Dat Nguyen, Kieu-Oanh Nguyen Thi

    Published 2020-01-01
    “…In this study, the relationship between heavy metals (HMs) concentrations in soils and several weeds including Cyclosorus parasiticus, Dicranopteris linearis, Pityrogramma calomelanos, and Pteris vittata in three mining sites (Cam Gia (Thai Nguyen city), Tan Long (Dong Hy district), and Ha Thuong (Dai Tu district)) in Thai Nguyen province, Vietnam, have been investigated. …”
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  16. 836

    Similar Material Simulation Study on Protection Effect of Steeply Inclined Upper Protective Layer Mining with Varying Interlayer Distances by Zhigang Yuan, Yaohua Shao, Zhuohui Zhu

    Published 2019-01-01
    “…Protective layer mining, as a dominating regional prevention measure, is generally adopted to prevent and control gas disasters in highly gassy or outburst mines of China. …”
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    Experimental Investigation on Atomization and Dustfall Characteristics of Combined Nozzles for Shearer External Spray in Fully Mechanized Coal Mining Face by Qian Wang, Ruixin Song, Junpeng Wang, Cuicui Xu, Gang Zhou, Jiayuan Wang

    Published 2021-01-01
    “…To explore the dustfall effect of combined nozzles used in a fully mechanized mining face, Phase Doppler Interferometry (PDI) system was used to test 6 types of high-efficiency atomizer under 8 MPa. …”
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