Results 81 to 90 of about 4,148 (210)
Application of an Integrated and Self-contained Electromagnetic Acoustic Recorder for Monitoring the Rock Mass Structure and Development of Geodynamic Processes in Ore Mines [PDF]
, 2016 The paper presents a block diagram of the recorder of electromagnetic and acoustic signals. The recorder provides monitoring of electromagnetic and acoustic signals under changing stress-strain state of heterogeneous materials and rocks.
Bespalko (Bespal'ko), Anatoly Alekseevich +4 more
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Review on Rockburst Theory and Types of Rock Support in Rockburst Prone Mines
Open Journal of Safety Science and Technology, 2015 As the depth of mining increases, the occurrence of seismic events is becoming a more common phenomenon causing serious problems regarding to the stability and safety of mines. However, seismicity and the accompanying rockburst phenomena are not a well-defined and well-understood in underground excavations in these times. Efforts to clearly explain the
Eugie Kabwe, Yiming Wang
openaire +2 more sources
Kinematic Limit Analysis of Roof Stability for Elliptical Tunnels in Rock Masses
International Journal for Numerical and Analytical Methods in Geomechanics, Volume 49, Issue 16, Page 3880-3896, November 2025.ABSTRACT Noncircular cross‐sections are commonly encountered in engineering practice; however, primary attempts to analyze roof stability have focused on circular and rectangular configurations. This study investigates the roof stability of elliptical tunnels with varying aspect ratios, employing two semi‐analytical approaches: piecewise linear and ...
Tae‐Won Seo, Dowon Park
wiley +1 more source
A New Theoretical View of Rockburst and Its Engineering Application
Advances in Civil Engineering, 2018 Traditionally, rockburst is considered as a dynamic phenomenon of sudden destruction of coal/rock mass. In this study, rockburst is treated as an event process rather than a phenomenon. This paper introduces typical rockburst process, its classification,
Junfeng Pan +3 more
doaj +1 more source
Energy Science &Engineering, Volume 13, Issue 9, Page 4586-4602, September 2025.The analytical model of severe ground pressure in JZGS: (a) Overlying rock strata structure above the stope and gob‐side entry; (b) in situ monitoring of advanced and lateral abutment pressures. Many studies have demonstrated that the overlying strata above the stope and gob‐side entry fracture and collapse at specific angles [28‐30], forming broken ...
Wenrui He, Fulian He, Wenli Zhai
wiley +1 more source
New Material of the Earliest Hominid from the Upper Miocene of Chad [PDF]
, 2010 Anthropolog
Brunet, Michel +8 more
core +1 more source
Log‐Periodic Power Law Singularities in Landslide Dynamics: Statistical Evidence From 52 Crises
Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.Abstract Landslide movements typically show a series of progressively shorter quiescent phases, punctuated by sudden bursts during an acceleration crisis. We propose that such intermittent rupture phenomena can be described by a log‐periodic power law singularity model. Amounting mathematically to a generalization of the power law exponent from real to
Qinghua Lei, Didier Sornette
wiley +1 more source
Stress reduction factor characterization for highly stressed jointed rock based on tunneling data from Pakistan [PDF]
, 2017 Stress Reduction Factor (SRF) which is the most difficult parameter to characterize in Q (Tunneling Quality Index) system is targeted in this study for highly stressed jointed rock in tunneling.
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A phase-field method for modeling cracks with frictional contact
, 2019 We introduce a phase-field method for continuous modeling of cracks with frictional contacts. Compared with standard discrete methods for frictional contacts, the phase-field method has two attractive features: (1) it can represent arbitrary crack ...
Choo, Jinhyun, Fei, Fan
core +2 more sources
Method of drilling of coal pillar [PDF]
, 2011 One of outputs of the research project of the Czech Mining Office “Protection of Employees against Consequences of Rock and Gas Outbursts” was the application of yet not used methods of coal mining in the conditions of the Czech Republic.
Hudeček, Vlastimil, Stoniš, Milan
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