Results 121 to 130 of about 346,667 (337)
Deep Underground Science and Engineering, EarlyView.The influence of gas on the instability and failure of rock–coal–rock combinations is considered. The damage characteristics of gas‐bearing rock–coal–rock combinations under different confining pressures, axial loading rates, and gas are revealed. A constitutive model for gas‐bearing rock–coal–rock damage considering gas is established.
Feng Du +8 more
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ELECTRIC MINING-MACHINERY, WITH SPECIAL REFERENCE TO THE APPLICATION OF ELECTRICITY TO COAL-CUTTING, PUMPING, AND ROCK-DRILLING. (INCLUDES PLATES AND APPENDIX). [PDF]
, 1891 L.B. Atkinson, C W ATKINSON
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Deep Underground Science and Engineering, EarlyView.In this study, the nonuniform distribution of the bearing pressure in front of the coal wall has been revealed based on in situ monitoring data and numerical simulation results. Therefore, an eccentric compression mechanical model of the coal wall was established to study the deformation and failure characteristics of a coal wall. The slenderness ratio
Maolin Tian +6 more
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Study on the effect of mining height on overburden strata movement in longwall mining
International Journal of Coal Science & TechnologyThe mining height of a coal seam is a critical factor influencing the detachment, collapse, and formation of the collapse angle of the strata during strata movement. To clarify the mechanism by which mining height affects strata movement characteristics,
Ying Ma +6 more
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Dynamic mechanical characteristics and engineering application of high elongation anchor cable
Meitan kexue jishuThe traditional anchor cable has low elongation, poor impact resistance, and is prone to brittle fracture failure under strong impact load, leading to roof fall, rock burst accidents and other problems in the roadway. Based on this, the anchor cable with
Yukai FU +4 more
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I.—Chart of Fossil Shells Found in Connection with the Seams of Coal and Ironstone of North Staffordshire. By Hind WheeltonM.D., F.R.C.S., F.G.S., and Stobbs JohnF.G.S., (Published by the North Staffordshire Institute of Mining and Mechanical Engineers, 1903. Price 5s.) [PDF]
, 1903 Walcot Gibson
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Hotspots, trends, and regional focus on oil or gas exploration: A bibliometric comparative study
Deep Underground Science and Engineering, EarlyView.This paper explores the research trends in global oil and gas exploration through the bibliometric analysis of 3460 articles collected from the Web of Science database on oil and gas exploration published from 2013 to 2023. The research hotspots, objects, regional distribution, methods, and evaluation methods of oil and gas exploration are analyzed and
Jihong Wang +3 more
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Meitan xuebaoIn response to the poor active support effect of the surface protection components in soft coal roadway and the continuous expansion of the broken range of local exposed surrounding rock, which leads to the failure of anchor rod and cables, a mesh ...
Guiyang YUAN +4 more
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International Journal of Mining Science and Technology, 2021 It is significant to research the impact resistance properties of hydraulic support due to its key support role in the fully mechanized mining face. However, it is difficult for the entire hydraulic support to implement the impact experiment underground ...
Huaiwei Ren +6 more
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