Field and numerical modelling on the stability of underground strata in longwall workings
Energy Geoscience, 2023 The longwall method is one of the feasible and efficient underground mining methods for greater depth of workings. Recently, Singareni Collieries Company Limited (SCCL), the largest coal-producing government company in the Southern part of India, has ...
G. Budi, K Nageswara Rao, Punit Mohanty
doaj +1 more source
Spatial non-linearity of methane release dynamics in underground boreholes for sustainable mining
Записки Горного института, 2020 The paper is devoted to the problem of increasing energy efficiency of coalmine methane utilization to provide sustainable development of geotechnologies in the context of transition to a clean resource-saving energy production.
Ada K. Dzhioeva, Vladimir S. Brigida
doaj +1 more source
Strata Caving and Gob Evolution Characteristic in Longwall Mining
Shock and Vibration, 2022 It is usually difficult to capture strata caving and gob evolution characteristic in longwall mining at engineering scales. This paper uses bonded block modelling (BBM) approach within a distinct element method (DEM) code to simulate strata behaviour in ...
Weidong Pan, Xinyuan Li, Zhining Zhao
doaj +1 more source
Methane emissions and airflow patterns on a longwall face: Potential influences from longwall gob permeability distributions on a bleederless longwall [PDF]
Transactions, 2017 Longwall face ventilation is an important component of the overall coal mine ventilation system. Increased production rates due to higher-capacity mining equipment tend to also increase methane emission rates from the coal face, which must be diluted by the face ventilation.
S J, Schatzel, R B, Krog, H, Dougherty
openaire +2 more sources
The Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation
Energies, 2021 In coal mines that are exploiting methane-saturated seams, high-level emission of methane is often the basic limitation for modern and high-efficiency longwall complexes.
Wacław Dziurzyński +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
Analysis of methane hazard in longwall working equipped with a powered longwall complex [PDF]
E3S Web of Conferences, 2020 Most of currently exploited hard coal seams has a very high degree of methane saturation. Consequently, the mining process of such deposits generates substantial amounts of methane. This in turn increases the risk of fire and/or explosion of this gas. Methane hazard is currently one of the most dangerous threats occurring in the process of underground ...
Sobik Leszek +3 more
openaire +2 more sources
Analysis of Possible Origination of Domes in Longwalls
Горные науки и технологии, 2019 The research is aimed at solving problems of assessing underground working stability in complicated mining and geological conditions to increase reliability and safety of mining operations.
R. I. Imranov +4 more
doaj +1 more source
Applied Sciences, 2021 Dust control is one of the most difficult challenges for underground coal mine operators, especially longwall mine operators. The most widely used dust control technologies at a longwall section are ventilation air and water sprays, whereas a continuous ...
Sampurna Arya +2 more
doaj +1 more source
A case study of the stability of a non-typical bleeder entry system at a U.S. longwall mine
International Journal of Mining Science and Technology, 2020 Longwall abutment loads are influenced by several factors, including depth of cover, pillar sizes, panel dimensions, geological setting, mining height, proximity to gob, intersection type, and size of the gob.
T.M. Klemetti +3 more
doaj +1 more source