Results 11 to 20 of about 670,391 (188)
Meikuang Anquan, 2020 To study the waterproof coal pillar design for mining in the outcrop area of thick coal seam in Shanxi Formation under the large Jurassic red stratum in the seventh mining area planned and designed by Dongtan Coal Mine, the systematic analysis is ...
XIE Huadong
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Failure characteristics of extra-thick coal seam under goaf based on double yield model
Meikuang Anquan, 2022 This paper aims to study the influence of the goaf in the upper coal seam on the overlying ultra-thick coal seam and determine the dislocation distance in the roadway layout of the lower coal seam. Based on finite difference method, this research, takig
XUE Jisheng, ZHAO Tielin, PAN Liming
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Meikuang Anquan, 2021 To explore the evolution law of overburden strata during the mining of huge thick coal seams, an experimental study on the distribution characteristics of the overburden three zones with large mining height was carried out.
MENG Xiangjun +9 more
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Meikuang Anquan, 2020 The mining of thick coal seam is different from the mining of general thick coal seam. The thickness of the first mining is increased, which makes the space of overlying strata rotary movement increase, and it is easy to induce more intense mine pressure.
ZHANG Xizhai, WANG Wenlin
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Study on the Failure Characteristics of Coal Wall Spalling in Thick Coal Seam with Gangue
Advances in Civil Engineering, 2020 Coal wall spalling is one of the main factors restricting the safe and efficient mining of thick coal seam, and the gangue has an important impact on the coal wall spalling.
Guosheng Li +3 more
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Supporting optimization of thick seam roadway with top coal based on orthogonal matrix analysis
Scientific Reports, 2023 Aiming at the problem of large deformation and difficulty in surrounding rock control of the top coal roadway in thick seam, theoretical analysis, theoretical analysis, numerical simulation, orthogonal matrix analysis and other methods were used to study
Ce Jia +6 more
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Cross-Section Shape and Asymmetric Support Technology of Steeply Inclined Thick Coal Seam Roadway
Applied SciencesThe dip angle and thickness of coal seams are key geological determinants in mine system engineering. Roadways excavated in steeply inclined or thick coal seams typically exhibit significant deformation, with the combined geological configuration of ...
Fan Li +6 more
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Meikuang AnquanAiming at the large deformation and difficult control of the thick coal seam roadway under water-drenched conditions, the zoning damage characteristics of thick coal seam water-drenched roadway and the synergistic control mechanism of double arch zoning ...
Hong GAO
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Meitan kexue jishuThe roof breaking movement of steeply inclined and ultra-thick coal seam mining is complex, and the evolution law of stress and energy is special. Under the influence of deep ‘three highs and one disturbance’, the prevention and control of rock burst is ...
Linming DOU +5 more
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Mining technology and practice of full-solid waste cemented backfilling in narrow strip of extra-thick coal seam under buildings [PDF]
Meitan kexue jishuThere is a great amount of coal pressed under buildings in our country, while the discharge of coal-based industrial solid wastes such as coal gangue and fly ash are increasing, which has severely restricted the local economic and social development ...
Lang LIU +6 more
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