Results 11 to 20 of about 9,068 (173)
Systematic principles of surrounding rock control in longwall mining within thick coal seams
International Journal of Mining Science and Technology, 2019 Effective surrounding rock control is a prerequisite for realizing safe mining in underground coal mines. In the past three decades, longwall top-coal caving mining (LTCC) and single pass large height longwall mining (SPLL) found expanded usage in ...
Jiachen Wang, Zhaohui Wang
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Longwall automation: trends, challenges and opportunities
International Journal of Mining Science and Technology, 2017 This paper explores the ongoing development and implementation of longwall automation technology to achieve greater levels of underground coal mining performance.
Jonathon C. Ralston +2 more
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Impact of longwall mining on groundwater above the longwall panel in shallow coal seams
Journal of Rock Mechanics and Geotechnical Engineering, 2015 Since longwall mining causes subsidence through the overlying strata to the ground surface, the surface water and groundwater above the longwall panels may be affected and drained into the lower levels.
Yang Li, Syd S. Peng, Jinwang Zhang
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International Journal of Mining Science and Technology, 2020 Historically there have been a number of different hypotheses and empirical models developed in an attempt to describe the nature of fracturing above longwall panels in underground coal mining.
Bruce Hebblewhite
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Automation in U.S. longwall coal mining: A state-of-the-art review
International Journal of Mining Science and Technology, 2019 This paper reviews the development of U.S. longwall mining from an unknown to became the world standard in the past five decades with emphasis on automation.
Syd S. Peng +3 more
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Heavy rockbursts due to longwall mining near protective pillars: A case study
International Journal of Mining Science and Technology, 2018 Rockburst represents a very dangerous phenomenon in deep underground mining in unfavourable conditions such as great depth, high horizontal stress, proximity of important tectonic structures, and unmined pillars. The case study describes a recorded heavy
Petr Konicek, Jan Schreiber
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The model of surface subsidence process at subsidence through formation [PDF]
, 2003 The character of surface subsidence is different and has its peculiarities at different stages of mining operations. The process of surface subsidence is especially different in the initial period of mining lava comparing with other stages of mining ...
Кучин, Александр Сергеевич +2 more
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Energies, 2022 The main goal of the paper is numerical simulation for investigation of damage causes in the working of a longwall located under the unmined longwall panel. The paper presents the results of model-based research on the stability of the roof of a longwall
Sylwester Rajwa +4 more
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DETERMINATION OF WORKLOADS IN CUTTING HEAD OF LONGWALL TUMBLE HEADING MACHINE [PDF]
Management Systems in Production Engineering, 2016 The mining organ of the longwall heading machine KGS-320 with radial tools was the subject of the analysis. Cooperation of single knife with the mined solid rock was estimated in order to determine values of the forces and moments that might occur in the
Witold BIAŁY
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Analyzing kinetics of deformation of boundary rocks of mine workings [PDF]
, 2018 Purpose is to analyze nature of rock deformation and to estimate experimentally state of mine workings being supported under the conditions of areas disturbed by coal mining. Methods. The studies involved field instrumental observations within measuring
Nehrii, S +3 more
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