Results 171 to 180 of about 370,321 (357)
Study on Key Controlling Factors of Fracture Propagation by Shaped Charge Blasting in Coal Seams
Energy Science &Engineering, EarlyView.Gas drainage is the fundamental approach to controlling gas disasters in coal mines. For single low‐permeability coal seams, it should be supplemented by coal seam permeability enhancement technologies to improve gas drainage efficiency. This paper conducted a numerical simulation study on the key controlling factors affecting the fracturing effect of ...
Xin Yang +4 more
wiley +1 more source
Risk Distribution in Coal Mining: Fighting for Environmental Justice in East Kalimantan, Indonesia
, 2019 Muhamad Muhdar +2 more
openalex +2 more sources
Effects of surface coal mining on suspended-sediment discharge in a small mountain watershed, Fayette County, Pennsylvania [PDF]
, 1986 Thomas M. Mastrilli, Donald E. Stump
openalex +1 more source
Energy Science &Engineering, EarlyView.Based on entropy theory, this study presents a comparative numerical analysis of the flow energy dissipation (FED) in a VTSP under two distinct operating conditions: pump condition and turbine condition, both characterized by relatively high hydraulic efficiencies of 88.9% and 87.4%, respectively. In pump condition, the highest FED production occurs in
S. Liu +5 more
wiley +1 more source
Energy Science &Engineering, EarlyView.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
Failure Mechanism of Asymmetric Large Deformations Under Repeated Mining in Roadways
Energy Science &Engineering, EarlyView.Principal stress‐evolution diagram at different advance positions of 42205 working face. ABSTRACT To address the challenge of controlling severe asymmetrical deformation in roadways subjected to repeated mining, this study (i.e., based on the engineering context of the Buertai Coal Mine) investigated the characteristics of the regional stress field in ...
Ai‐Rong Wang +3 more
wiley +1 more source
Raiding as a Treat to Economic Security of Kuzbass Coal Mining Enterprises [PDF]
, 2018 Tatyana Tuleneva
openalex +1 more source
Reclamation Laws and Costs of Strip Mined Land in North Dakota [PDF]
Coal is becoming more important as a source of energy. There are16 billion tons of economically surface minable coal in North Dakota underlying 700,000 acres.
Gronhovd, Duane E., Scott, Donald F.
core +1 more source
Energy Storage System in Microgrids: Challenges and Opportunities
Energy Science &Engineering, EarlyView.Hybrid integration of multiple Energy Storage Systems (ESSs) within renewable‐powered microgrids enhances reliability, flexibility, and economic sustainability. Lithium‐ion batteries, flow batteries, hydrogen storage, and thermal systems complement each other through coordinated control via Energy Management Systems.
Mohamed G. Moh Almihat, Josiah L. Munda
wiley +1 more source
Underground coal mining section data [PDF]
A set of tables which display the allocation of time for ten personnel and eight pieces of underground coal mining equipment to ten function categories is provided.
Gabrill, C. P., Urie, J. T.
core +1 more source