... ABSTRACT A rockburst is defined as a sudden and violent disruption of rock in underground excavation. Rockbursts have been regarded as the least understood and the most feared mining disasters. Excavation-induced stress redistribution may lead to slippage of some pre-existing faults or even...

... ABSTRACT Skin support provides resistance to the shearing and spalling of exposed rock layers/blocks, as well as protecting the surface from open atmospheric contact. Thin spray-on liner (TSL) is one such skin support that can be applied to the roof or sidewalls of an excavation to enhance...

... geology china government upstream oil & gas rock mass united states government reservoir geomechanics rock mechanic tunnel coefficient elastic model geological subdiscipline particle jointed rock mass boundary in-situ stress wave velocity excavation pressure coefficient...

... the sensitivity of contributing parameters to pressure responses observed in a piezometer sensor due to excavation of a mine slope. Site monitoring data showing HMC effects within a mine in Nevada are analyzed and reproduced using FLAC . This research aims to promote the understanding of HMC in pit slopes...

... geological subdiscipline diederich graph numerical modeling rockburst simulation geology chile government excavation rock mass equation gsi santiago chile advanced mining technology center strength strainburst mohr coulomb ARMA 23 0772 Comparison of constitutive models for numerical...

... scenario coal seam reservoir characterization university excavation loading condition convergence case study explosion resistance ABSTRACT Build-in-place (BIP) refuge alternatives (RAs) are used to provide safe havens for miners unable to escape their working area after an accident like...

... ABSTRACT Geological discontinuities have a large impact on the rock mass behavior in underground excavations. Under low stress conditions, structurally controlled wedge failure is one of the most critical types of rock instability. The stability analysis, in this case, is essential to consider...

... how the challenges associated with TBM excavation in mixed faced conditions could be efficiently dealt with using the finite element analysis. More specially detailed numerical analysis techniques for dealing with the construction of closed twin tunnels in mixed face conditions will be provided using...

... of a suitable TBM. tunnel rock type reservoir characterization asia government artificial intelligence structural geology rail transportation gokceoglu diameter excavation construction tbm high-speed railway construction project rkiye ankara-izmir high-speed railway construction project...

... geological subdiscipline reservoir geomechanics real time system seismic wave propagation configuration rock mechanic numerical modeling frequency wave velocity engineering geology elastic parameter wave propagation excavation attenuation different frequency granite cube velocity magnitude...

... ABSTRACT Rockbursts are the most serious and least understood hazard associated with deep underground excavations, typically involving violent energy release and the sudden ejection of rock fragments that may result in fatalities and damage to underground infrastructure. A M L 2.8 seismic...

... to plan better designs, and evaluate current designs, and improve the advancement at the mine. geology united states government upstream oil & gas europe government reservoir characterization geologist sensor excavation digital twin advancement metals & mining artificial...

... ABSTRACT In underground mining, stopes are excavated step by step, and each step has a certain length according to the mine planning. Displacements of the free surface of the stope sidewall are contributed by the excavation of stopes. Rockburst is caused by the exaction in underground stopes...

... ABSTRACT As mining operations pursue deeper and larger excavations, the accurate assessment of the risk of excessive rock deformations caused by brittle fracturing and dilation/bulking near excavation boundaries becomes increasingly important. To address this, the bonded-block modeling (BBM...

... ABSTRACT Detecting the damaged precursor of deep tunnel excavations using crack classification is essential for ensuring structural safety and durability since the cracking mode of a crack (tensile or shear) is connected to a rockburst. Acoustic emission (AE) is related to the mechanisms...

... government excavation operation phase storage cavern cavern underground space technology pressure distribution rock mechanic zhao reservoir characterization underground storage cavern oil storage cavern mpa hong kong polytechnic university ARMA 23 282 Numerical simulation of the underground...

..., the specific mechanisms that cause bumps may not be well understood. Faults, in general, are simulated as a single planar or nonplanar interface by numerical tools for safety or stability analyses of underground mining excavations. However, the real 3D structure of a fault is commonly very complex...

..., such as a concrete liner, is necessary for the long-term stability of the shaft. 1. INTRODUCTION Underground mines aim to reach deep orebodies by enhancing the advance rate of access developments while maintaining safe workplaces. Underground lateral (drifts) and vertical (shafts) developments are excavated...

... guide the design and construction of similar tunnel projects in weak rock mass configurations. 1. INTRODUCTION During the excavation progress in a rock tunnel under high in-situ stress, the problem of large squeezing deformation is often encountered in unfavoured geological conditions consisting of weak...

... tunnel excavation (Rutqvist, 2015). The excavation damaged zone (EDZ) could provide flow paths for radionuclides if they are released (Tsang et al., 2005). Hence, it is crucial to evaluate the stability of the EBS, EDZ, and surrounding formation for the long term in order to assess the safety...