Results 161 to 170 of about 353,530 (338)
Tri‐axial compressive behavior of high‐water material for deep underground spaces
Deep Underground Science and Engineering, EarlyView.The relationship between the mechanical behavior and microstructures of the laterally confined high‐water material associated with water bleeding was established. Abstract Attributed to its superior water‐to‐solid ratio and quick setting time, the high‐water material is widely adopted in underground spaces as a cost‐effective and environmentally ...
Honglin Liu +5 more
wiley +1 more source
Frontiers in Earth ScienceIntroductionThis study aims to investigate the fractal characteristics of acoustic emission (AE) signals during coal-rock rupture and their predictive significance for impact dynamic hazards.MethodsTrue triaxial loading/unloading tests were conducted on ...
Fuquan Gao +10 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.Stability analysis of compressed air energy storage caverns transformed from horseshoe‐shapes roadways in an abandoned coal mine is carried out. Both initial damage areas and two cavern shapes are numerically simulated using a one‐way coupling iteration algorithm of an improved generalization α method.
Rui Sun +4 more
wiley +1 more source
Meitan xuebaoSummarizing the current development status of intelligent and digital technologies in the coal industry, analyzing the new situations and requirements for research and application of intelligent technologies and complete sets of equipment for efficient ...
Guofa WANG +6 more
doaj +1 more source
Overview of geothermal resource exploration and development in North Africa
Deep Underground Science and Engineering, EarlyView.This article reviews geothermal exploration in North Africa, highlighting key activities, government policies, and exploration findings across Mauritania, Morocco, Algeria, Tunisia, Libya, and Egypt. The region's substantial geothermal potential, driven by tectonic activity, positions it to play a significant role in the global geothermal energy ...
Meryem Redouane
wiley +1 more source
Meitan xuebaoAiming at the problems of super-large mining space, strong ore pressure and ultra-high coal wall stability control faced by full-mechanized mining face with ultra-large mining height and thick hard roof, this paper takes the 122104 working face of ...
Yajun LEI +11 more
doaj +1 more source
TRADE-OFFS BETWEEN SEVERANCE TAX REVENUES AND COAL MINING EMPLOYMENT [PDF]
A severance tax can provide local jurisdictions with additional revenues to finance economic development, yet the imposition of a tax may create coal industry employment losses.
Findeis, Jill L., Shortle, James S.
core +1 more source
What Lies Beneath: Treatment of Canvas-backed Pennsylvania Coal Mining Maps for Digitization [PDF]
, 2008 An ongoing program to preserve approximately seven hundred oversized, canvas-backed, coal mining maps from the CONSOL Energy Mining Map Collection was initiated by the University of Pittsburgh (Pitt) in 2007, supported by funding from the United States ...
Baker, Amy +3 more
core +1 more source