Results 81 to 90 of about 877,348 (312)
Dust Control Practices For Underground Coal Mining [PDF]
Underground coal mining operations in the United States continue to increase productivity as mining equipment and practices are improved. Unfortunately, increased production also results in the potential for increased respirable dust generation and ...
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Deep Underground Science and Engineering, EarlyView.This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley +1 more source
Analysis Of Highwall Mining Stability - The Effect Of Multiple Seams And Prior Auger Mining On Design [PDF]
The objective of this is paper is to review the current state of knowledge and practice in highwall mining (HWM). HWM has become a widely-applied method in surface mining, commonly used alone or in conjunction with contour or slot mining. It provides 800-
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Serbian underground coal mining: Current state and possibilities for further development [PDF]
, 2016 The underground coal mining in Serbia is faced with numerous problems and difficulties for quite a long time. The outputs decrease, the equipment and technologies are obsolete, the investments in development projects are minimal, while the business ...
Denić Miodrag +3 more
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Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Behavior of noncircular tunnels excavated in stratified rock masses – Case of underground coal mines
Journal of Rock Mechanics and Geotechnical Engineering, 2019 The amount of tunnels excavated along stratified/sedimentary rock masses in Quangninh coal mine area, Vietnam, is gradually increasing. Rock mass in Quangninh is characterized by beddings between rock layers.
Ngoc Anh Do +6 more
doaj +1 more source
Underground mining and water management
, 2011 All mines face water management challenges. Adopting leading practice water management strategies can help reduce both operational and strategic risks.
Greig, G. +3 more
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Deep Underground Science and Engineering, EarlyView.In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu +6 more
wiley +1 more source
Energies, 2019 Gob-side entry retaining (GER) is a hot issue with regard to saving resources and reducing the drivage ratio in longwall mining. This paper investigates an innovative approach of roof presplitting for gob-side entry retaining (RPGER).
Xingyu Zhang +5 more
doaj +1 more source
RFID in Underground-Mining Service Applications
, 2014 This overview of RFID in underground-mining service applications is set against the backdrop of the major challenges that this technology must overcome for successful implementation in rugged environments.
Mishra, P.K.
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