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Journal of Rock Mechanics and Geotechnical Engineering, 2015 Generally, longwall mining-induced stress results from the stress relaxation due to destressed zone that occurs above the mined panel. Knowledge of induced stress is very important for accurate design of adjacent gateroads and intervening pillars which ...
Mohammad Rezaei +2 more
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Analysis of Longwall Salvage Operations in JSC SUEK-Kuzbass Underground Mines [PDF]
E3S Web of Conferences, 2019 The longwall coal mining method is the most productive mining method. However, the salvage operations which include the formation of the salvage chamber and the salvage of longwall face equipment require improvement.
Yermakova Inna, Fedusov Vyacheslav
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Записки Горного института, 2021 The reasons for the lag of the indicators of the leading Russian coal mines engaged in the longwall mining of the flat-lying coal seams from similar foreign mines are considered.
Аndrey A. Meshkov +2 more
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, 1995 As part of EIA`s program to provide information on coal, this report, Longwall-Mining, describes longwall mining and compares it with other underground mining methods. Using data from EIA and private sector surveys, the report describes major changes in the geologic, technological, and operating characteristics of longwall mining over the past decade ...
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An FDM-Based Dynamic Zoning Method for Disturbed Rock Masses above a Longwall Mining Panel
Applied Sciences, 2023 Underground longwall mining can seriously disturb the surrounding rock masses above the panel. A surface cracking zone, continuous deformation zone, fractured zone, and caved zone can be formed in the overlying strata (termed the “four zones”), which may
Kunyang Zhao, Suizi Jia
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Review of an Improved Longwall Panel Layout for Ground Control in Longwall Mining
Shock and Vibration, 2022 Conventional longwall layout (CLL) for mining coal, trona, etc. is still fraught with problems including low resource recovery, wavy ground surface subsidence, bumps or rockbursts, gateroad support and maintenance, poisonous air hazard, spontaneous combustion in coal mines, instability of equipment at inclined, or steeply inclined working face, etc. In
Zhoufeng Cui +3 more
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Research progress on key technologies of long-distance, heavy-duty scraper conveyors
矿业科学学报As fully-mechanized coal mining faces advance toward long-distance and high-throughput operations, long-distance, heavy-duty scraper conveyors are increasingly challenged by amplified self-weight, accumulated running resistance and insufficient ...
HUANG Lei +5 more
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ON THE INFLUENCE OF LONGWALL MINING ON THE DEFORMATION OF THE OPERATIONAL EXCAVATIONS
Mechanics of Machines, Mechanisms and Materials, 2023 The paper presents the results of numerical modeling of the geomechanical behavior of the system “lava — operational excavation — enclosing potash rock mass” during mining operations. Numerical modeling includes a forecast of the mechanical behavior of the system at all stages of the system existence: from the natural stress-strain state (SSS) of the ...
Andrey L. Polyakov +3 more
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Записки Горного института, 2023 The results of the analysis of practical experience in the development of potash seams using longwall mining systems at the mines of OAO “Belaruskali” are presented.
Vladimir P. Zubov, Denis G. Sokol
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International Journal of Coal Science & Technology, 2019 A new approach for prediction of face advance rete (FAR) prior to mining operation and determination of the operation efficiency after mining operation in retreat longwall mining panel is presented based upon the concepts of rock engineering system (RES).
Sajjad Aghababaei +2 more
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