Results 41 to 50 of about 1,438 (180)
Energy Science &Engineering, Volume 14, Issue 4, Page 1713-1724, April 2026.ABSTRACT The powered roof supports in the longwall complex are placed and interconnected next to one another, typically about 125–250 units in a longwall face. It is an essential component in the longwall complex, which also includes a shearer (or plow) and an armored face conveyor.
Dawid Szurgacz +3 more
wiley +1 more source
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
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
Energy Science &Engineering, Volume 14, Issue 4, Page 1808-1821, April 2026.Aiming at the difficulties in accurately calculating the movement and deformation of small‐sized, deep‐buried dams with a significant height‐to‐depth ratio in deep fully mechanized caving mining, this study proposes to separate the analysis of surface and dam deformation.
Zhang Feng +7 more
wiley +1 more source
Energy Science &Engineering, Volume 14, Issue 4, Page 1851-1863, April 2026.With the advancement of coal mining technology driving the development of working faces toward increased mining heights and extended lengths, the enlargement of face dimensions has led to expanded overlying strata failure zones and intensified ground pressure manifestations. Consequently, traditional methods for determining hydraulic support resistance
Chen Gong +5 more
wiley +1 more source
Energy Science &Engineering, Volume 14, Issue 4, Page 2137-2152, April 2026.A novel collaborative control technology of gob‐side entry retention with narrow roadside filling wall is proposed, wherein anchoring end of anchor cable must penetrate the boundary line of stress peak (plastic zone). ABSTRACT Gob‐side entry retention represents a major technological innovation in the history of coal mining, offering numerous ...
Wenxu Liang, Wei Fu, Ziwen Liu
wiley +1 more source
Energy Science &Engineering, Volume 14, Issue 4, Page 2225-2247, April 2026.Based on theoretical analysis, the energy‐evolution behavior of the surrounding rock at various depths on the solid‐coal side of the 221303 material roadway during the “advancing‐toward‐mining” process was first clarified. Numerical simulations were then performed to validate and elaborate on the theoretical results.
Wei Zhang +7 more
wiley +1 more source
An optimization approach for panel dimension design in underground coal mines
Kuwait Journal of Science, 2019 Global energy demand increases the coal production in the last decades. Productive and cost-effective production and work safety are important factors in terms of underground coal mine design and planning.
Tahir Mallı, Mustafa Emre Yetkin
doaj
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
doaj +1 more source
An investigation of longwall failure using 3D numerical modelling – A case study at a copper mine
Studia Geotechnica et Mechanica, 2021 It is well-known that the longwall mining method (with roof caving) is widely used in underground mining extraction for bedded deposits (e.g. coal) due to its numerous advantages.
Nguyen Phu Minh Vuong +2 more
doaj +1 more source