Showing 721 - 740 results of 750 for search '"coal mines"', query time: 0.08s Refine Results
  1. 721
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  3. 723

    Application of Clustering and Stepwise Discriminant Analysis Based on Hydrochemical Characteristics in Determining the Source of Mine Water Inrush by Weitao Liu, Jie Yu, Jianjun Shen, Qiushuang Zheng, Mengke Han, Yingying Hu, Xiangxi Meng

    Published 2021-01-01
    “…In order to explore the law of groundwater evolution, the water source connection between faults and aquifers and the main sources of mine water inrush in the deep mining area of Yangcheng Coal Mine in Jining City, 40 groups of hydrochemical samples were collected and analyzed by Piper Diagram and Durov Diagram. …”
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  4. 724

    Mechanical Properties and Control Rockburst Mechanism of Coal and Rock Mass with Bursting Liability in Deep Mining by Ming-tao Gao, Zhen-qi Song, Hui-qiang Duan, Heng-qi Xin, Jian-quan Tang

    Published 2020-01-01
    “…In order to study the mechanism of the dynamic disaster of rockburst in a deep coal mine and the prevention and control measures of weakening shock, the MTS815.03 servocontrolled rock mechanics test system is used to test the coal, rock, and combined specimens with the buried depth of nearly 1200 m in Xinwen Mining Area. …”
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  5. 725

    Analysis on the Influence Degree of Deformation Control Factors of Deep-Buried Roadway’s Fractured Surrounding Rock Using Orthogonal Design by Ke Li, Weijian Yu, Youlin Xu, Ze Zhou, Mengtang Xu, Wei Liang

    Published 2021-01-01
    “…The deformation of deep-buried roadway’s fractured surrounding rock development was investigated using multi-index orthoplan in this paper. According to the coal mine field investigation, support structure’s failure often occurs, and some need to be repaired many times. …”
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  6. 726
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    Uniaxial Compression Creep Relaxation and Grading of Coal Samples via Tests on the Progressive Failure Characteristics by Zuqiang Xiong, Changsheng Song, Chengdong Su, Xiaolei Wang, Cheng Wang, Yu Hao

    Published 2019-01-01
    “…The entire coal samples were divided into many thin-sheet debris via gradual collapse and shedding, and the number of cracks increased significantly, showing evident lateral expansion characteristics that are similar to the rib spalling characteristics in high coal mining working faces.…”
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  8. 728
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    Attribution analysis of water-sediment variation under the influence of climate change and human activities in the Kuye River Basin by Jiankang ZHANG, Jiping WANG, Jiansheng SHI

    Published 2024-11-01
    “…It is necessary to pay more attention to the combined effects of ecological restoration and coal mining activities on water resources change.…”
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    Article
  10. 730

    Advances and trends of modern and contemporary research on the geology of coal-measure minerals in China by Yong QIN

    Published 2025-01-01
    “…It is recommended to focus on four aspects in future geological study: the precise exploration and exploitation of coal resources, the exploration and orderly production of coal-measure gas, the exploration and exploitation of critical metals, and the geological guarantee for in situ fluidized coal mining. Additionally, it is necessary to pay attention to the accumulation mechanisms and resource prediction methods for helium in coal measures.…”
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  11. 731

    Determining the Height of Water-Flowing Fractured Zone in Bedrock-Soil Layer in a Jurassic Coalfield in Northern Shaanxi, China by Jie Feng, Sujian Wang, Enke Hou, Xiang Ding, Huijun Duan

    Published 2021-01-01
    “…The height of the water-flowing fractured zone is the most important technical parameter for water prevention and control in a coal mine. Due to the numerous factors affecting the water-flowing fractured zone, it is difficult to accurately identify the zone. …”
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    Article
  12. 732

    Reclaiming Subsidized Land: An Evaluation of Coal Gangue Interlayers by Yuling Gong, Zhenqi Hu, Kevin McSweeney

    Published 2020-01-01
    “…Rehabilitation of areas impacted by subsidence following coal mining is a pressing need in eastern China, especially where availability of suitable soil material is limited. …”
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  13. 733

    Experimental Investigations on Charge Induction and Microseismic Characteristics of the Coal and Rock under Different Loading Rates by Yuchun Liu, Ling Ding, Yangfeng Zhao, Yi Fan, Hongfei Li

    Published 2021-01-01
    “…In this study, the coal and sandstone samples from the No. 11 mine of Pingdingshan Coal Mine are prepared. The charge induction and microseismic synchronous comprehensive monitoring system is built. …”
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    Spatiotemporal variability of groundwater chemistry, source identification and health risks in the southern Chinese Loess Plateau by Zijun Li, Qingchun Yang, Chuan Xie, Hongyun Ma, Bin Wu, Yanli Wang

    Published 2025-01-01
    “…The anthropogenic sources including agricultural activities (20.7 % and 21.8 % in JH-U and ML) and coal mining activities (20.1 % and 29.5 % in JH-U and ML) also played a role in affecting groundwater quality. …”
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    Study on the mechanism and control of strong ground pressure in the mining of shallow buried close-distance coal seam passing through the loess hilly region by Yanpeng He, Qingxiang Huang, Li Ma

    Published 2025-01-01
    “…Taking the in the Zhangjiamao Coal Mine as the background, this study revealed the mechanism of high ground pressure when the working face of lower coal seam passes through the surface loess hilly region. …”
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  20. 740

    Field Study on the Law of Surface Subsidence in the High-Intensity Fully Mechanized Caving Mining Working Face with Shallow Thick Bedrock and Thin Epipedon in Hilly Areas by Yi Tan, Hao Cheng, Shuang Gong, Erhu Bai, Minchao Shao, Bingyuan Hao, Xiaoshuang Li, Han Xu

    Published 2021-01-01
    “…The measured surface stabilization time of the P2 working face is only 20% of the calculated value in the Specification for Coal Pillar Reservation and Coal Mining under Buildings, Water Bodies, Railways, and Main Shafts (hereinafter referred to as the Specification), indicating that the specification's empirical formula is inapplicable to the calculation of surface stabilization time of the P2 working face.…”
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