Results 71 to 80 of about 6,281 (245)
Study on sub-regional control of fully mechanized top-coal caving roadway under close irregular goa
Meikuang Anquan, 2023 In order to solve the control problems of large deformation of roadway surrounding rock in close coal seams, taking the fully mechanized top-coal caving roadway in close thick coal seams under irregular goaf of Xiaoyu Coal Mine as the engineering ...
LIU Huabo +3 more
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Meikuang Anquan, 2020 Aiming at the problem of large dust concentration during the mining operation of the 81308 fully mechanized caving face, based on the principles of wet coal dust reduction and spray dust reduction, utilizing “static pressure + a group of porous” large ...
WANG Huifeng, CHEN Dianfu
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Meikuang Anquan, 2021 In order to study the technical problems in the mining of irregular working face and the law of underground pressure in the mining process, take the 81308 fully mechanized caving face of Baode Coal Mine as the background, this paper uses theoretical analysis, numerical simulation, and field tests to study the technology of end equipment lapping, mining
YANG Xiaodong, LI Cunzhou
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Technology Diffusion in the Coal Mining Industry of the USSR: An Interim Assessment [PDF]
, 1989 Over many years IIASA has been involved in energy studies, coal was always an important research topic at all levels from resource assessment, study of potential future coal supply to the analysis of environmental impacts resulting from expanded coal ...
Astakhov, A., Grubler, A., Mookhin, A.
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Dynamic Random Arching in the Flow Field of Top-Coal Caving Mining
Energies, 2018 The large mining height fully mechanized top-coal caving mining technique has developed rapidly and become the most extensively used mining method for ultra-thick coal seams. The arching of coal/gangue and the drawing out of gangue are peculiar phenomena
Ningbo Zhang +3 more
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Applied Sciences, 2022 To study the caving of thick hard overburdens and evolution of water-conducting fracture zones in fully mechanized top-coal caving faces of gently inclined extra-thick coal seams, we comprehensively analyzed the 8103 working face of the Beixinyao Coal ...
Yang Zhou, Xueyi Yu
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Application of 3D laser scanner, optical transducers and digital image processing techniques in physical modelling of mining-related strata movement [PDF]
, 2015 A physical testing protocol for modelling mining-related problems has been presented. • A new method for monitoring fracture propagation pattern has been introduced. • Laser based and optical devices have been used for physical modelling of subsidence. •
Ghabraie, B, Holden, L, Ren, G, Smith, J
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IOP Conference Series: Earth and Environmental Science, 2019 Abstract According to the data monitored by the top pressure gauge of the I0128204 fully mechanized caving face in Yannan Mine, the statistical analysis method is used to analyze the adaptability of the hydraulic support. The results show that the ZFS6400-15.7/31 bracket support strength is suitable for soft rock fully mechanized caving.
Li Wang, Zhao Guibin, Song Baichao
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Energy Science & EngineeringTo investigate the ground pressure control in gob‐side roadways with small coal pillars in deep and high fully mechanized caving faces, a study was conducted based on the return airway of the 2‐2 coal seam in the 130203 face of Zao Quan Coal Mine of Guo ...
Linjun Peng +6 more
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河南理工大学学报. 自然科学版ObjectivesFully mechanized top-coal caving is a safe and efficient mining method for extra-thick coal seams. However， the complexity of the caving environment， the challenges in coordinating mining and caving， and the numerous factors influencing caving ...
LI Dongyin +7 more
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