Results 1 to 10 of about 1,342 (177)
Influence of longwall mining on the stability of gas wells in chain pillars [PDF]
International Journal of Mining Science and Technology, 2020 Longwall mining has a significant influence on gas wells located within longwall chain pillars. Subsurface subsidence and abutment pressure induced by longwall mining can cause excessive stresses and deformations in gas well casings.
Peter Zhang +4 more
doaj +4 more sources
Study of water-conducting fractured zone development law and assessment method in longwall mining of shallow coal seam [PDF]
Scientific Reports, 2022 Starting from the source of mining, scientific understanding of surface damage law and assessment method in longwall mining of shallow coal seam is conducive to solving the problems of geological hazards and deterioration of the ecological environment ...
Xiaobin Li +5 more
doaj +2 more sources
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
doaj +3 more sources
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
doaj +3 more sources
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
doaj +3 more sources
Selection of longwall shearers based on the results of research on the mechanical properties of coal [PDF]
Scientific ReportsThe proper selection of cutting longwall winning machines for specific mining and geological conditions requires the development of an appropriate algorithm.
Witold Biały +2 more
doaj +2 more sources
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
doaj +3 more sources
Energies, 2017 The key to the safe mining of thick coal seams under rivers is understanding the development patterns of fractured water-conducting zones (FWCZ) when various mining methods are used.
Feng Du, Rui Gao
doaj +3 more sources
Rock pressure relief is the basic alternative for sustainable underground mining [PDF]
E3S Web of Conferences, 2021 Retreat longwall mining is the most productive system for underground extraction of tabulated deposits. However, the steady growth of the mining depth dramatically increased the ground pressure in chain pillars protecting the longwall entries. Therefore,
Nazimko Victor +3 more
doaj +1 more source
FACTORS TO BE CONSIDERED FOR THE DESIGN OF FACE SUPPORTS IN LONGWALL MINING METHOD [PDF]
JES: Journal of Engineering Sciences, 2022 The main purpose of mine workings is the exploitation of ores and minerals that are used in different aspects of life. The most common underground method all over the world is the longwall mining method.
Peter Haroon +3 more
doaj +1 more source