Showing 581 - 600 results of 750 for search '"coal mines"', query time: 0.05s Refine Results
  1. 581

    Understanding the influence of stratification for mine water management: a comparative study by Elke Mugova, Christian Wolkersdorfer

    Published 2025-01-01
    “…The investigation of 29 ore and coal mine shafts and their corresponding physico-chemical depth profile measurements was aimed to compare the profiles with each other, while also taking into account the shaft geometry and the layout of the mine. …”
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    Article
  2. 582

    A Preliminary Study on the Design Method for Large-Diameter Deep-Hole Presplit Blasting and Its Vibration-Isolation Effect by Shuangshuang Xiao, Hongsheng Wang, Guowei Dong

    Published 2019-01-01
    “…Finally, the reasonable hole spacing for presplit blasting, distance from presplit blast hole to the cushion hole, and the charge mass in blast holes in the Heidaigou open-pit coal mine were determined, respectively.…”
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  3. 583

    Analysis of Failure Characteristics and Strength Criterion of Coal-Rock Combined Body with Different Height Ratios by Tuo Wang, Zhanguo Ma, Peng Gong, Ning Li, Shixing Cheng

    Published 2020-01-01
    “…In underground mining and roadway support engineering of coal mine, the coal and rock layers bear loads together; therefore, the deformation and mechanical characteristics of the coal-rock combined bodies are not the same as those of the pure coal or rock bodies. …”
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  4. 584

    Failure Mechanism of Anti-Inclined Karst Slope Induced by Underground Multiseam Mining by Nanyun Wang, Zuliang Zhong, Xinrong Liu, Guofu Gao

    Published 2022-01-01
    “…The DEM results are as follows: firstly, under the action of underground coal mining, the overlying strata of the mountain deform toward the goaf and the deformation of the stratum increase significantly with the caving of the roof stratum; and the deep karst fissures in the overlying stratum have an important influence on the deformation of the mountain; the upper strata form a subsidence zone along the fissures, expanding the range of tensile fissures. …”
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  5. 585

    Rational Boreholes Arrangement of Gas Extraction from Unloaded Coal Seam by Chaojun Fan, Sheng Li, Haohao Zhang, Zhenhua Yang

    Published 2018-01-01
    “…Based on the multiphysics field theory, the hydraulic-mechanical coupling model of gas extraction in the unloading coal seam was established, and the gas extraction process by drilling borehole in the floor roadway in the overburden of Panyi Coal Mine 1551 (1) panel was simulated. The influence of different drilling arrangements on the gas extraction effect was analyzed. …”
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    Article
  6. 586

    Les configurations de l'espace économique et la crise politique en Belgique by Christian Vandermotten

    Published 2011-04-01
    “…The economic crisis that affected Wallonia and many European early coal-mining and metallurgical areas after World War II generated in Flanders the feeling that Wallonia had become a burden for its own development, characterized in turn by strong manufacturing growth. …”
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  7. 587

    Rupture and Migration Law of Disturbed Overburden during Slicing Mining of Steeply Dipping Thick Coal Seam by Shuai Liu, Ke Yang, Chunan Tang, Xiaolou Chi

    Published 2020-01-01
    “…Steeply inclined and thick coal seams in Huainan Panbei Coal Mine in Anhui Province, China, were analyzed by physical analog modeling, acoustic emission (AE), and distributed fiber sensing (DBS). …”
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  8. 588

    Key Strata Inducing Dynamic Disasters Based on Energy Condition: Criterion and Application by Chao Xu, Gang Yang, Haoshi Sun, Liangliang Qin, Kai Wang, Bo Ren, Zhijie Wen

    Published 2021-01-01
    “…The disaster-inducing ability of the main THRS was analyzed, and the igneous sill was judged as KDIS, taking the Yangliu Coal Mine as project background. The breaking laws of the igneous sill were obtained by the methods of UDEC numerical simulation and microseismic monitoring, which verified the criterion of KDIS.…”
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  9. 589

    Stress Evolution Mechanism and Control Technology for Reversing Mining and Excavation under Mining-Induced Dynamic Pressure in Deep Mine by Jiyu Wang, Fangtian Wang, Xigui Zheng

    Published 2022-01-01
    “…In order to alleviate the relationship between mining and roadway, the 3204 working face and the 3206 roadway in Shanxi Taitou coal mine are taken as an example, and the width of mining and the support parameters of mining while reversing mining and excavation under dynamic pressure are optimized. …”
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    Article
  10. 590

    Numerical Simulation of Parameters Optimization for Goaf Gas Boreholes by Jiajia Liu, Jianliang Gao, Ming Yang, Dan Wang, Liang Wang

    Published 2019-01-01
    “…In view of the ground drilling of the N2206 working face in Shanxi Wangzhuang Coal Mine, the gas concentration is low and the extraction effect is not good. …”
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    Article
  11. 591

    Study on Reasonable Roadway Position of Working Face under Strip Coal Pillar in Rock Burst Mine by Hengze Yang, Zhongping Guo, Daozhi Chen, Chao Wang, Fuyu Zhang, Zhaowen Du

    Published 2020-01-01
    “…Based on the research background of the working face under the strip coal pillar in Jinqiao Coal Mine of Jining, Shandong Province, through theoretical analysis, similar material simulation experiment, and numerical simulation experiment, the stress distribution law, plastic failure range, and rationality of coal pillar setting in different width sections are systematically studied. …”
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  12. 592
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  14. 594

    Experimental Study of Gangue Layer Weakening with Deep-Hole Presplitting Blasting by Jianchi Hao, Lifeng Ren, Hu Wen, Duo Zhang

    Published 2021-01-01
    “…Advances in coal mining technology and an increase in coal output are resulting in increasingly challenging conditions being encountered at coal seams. …”
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    Article
  15. 595

    Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock by Yuezheng Zhang

    Published 2021-01-01
    “…Through the observation of pore water pressure during coal mining, it is found that the coseismic effect of pore water pressure is significant. …”
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  19. 599

    Experimental and Numerical Study of Rock Stratum Movement Characteristics in Longwall Mining by Wan-rong Liu

    Published 2019-01-01
    “…The roof fracture is the main cause of coal mine roof accidents. To analyze the law of movement and caving of the roof rock stratum, the roof subsidence displacement, rock stratum stress, and the rock stratum movement law were analyzed by using the methods of the particle discrete element and similar material simulation test. …”
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  20. 600

    The Effect of Hydraulic Coupling on Mechanical Deformation Characteristics of Shallow Coal Seam in Western Mining Area by Chunwei Ling, Xiaoshan Shi, Hao Wang, Kangning Zhang, Qingshan Ren, Yinghua Lv

    Published 2022-01-01
    “…During coal mining, the mechanical and deformation behavior of the overburden is affected by water and stress. …”
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