1-20 of 415
Keywords: stability
Close
Sort by
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-293
... and the stability problem of the dressing plant by surface subsidence in the area of the mine's protective pillar. There are many mining space areas due to the production activities of more than 10 years in the area, which deteriorates mining conditions and causes deformation failure of rock mass around the stopes...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-317
...-and-fill mining method requires consideration of the mining sequence to mitigate the instability risk due to excessive stress concentration in stopes scheduled for production. This study covers the effects of production sequence on the crown pillar and the global mine stability using numerical modeling...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-289
... geologist united states government reservoir characterization safety geology reservoir geomechanics surface-altering optimization upstream oil & gas stability optimization indonesia government asia government geological subdiscipline scenario technology bishop accuracy dam...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-249
... segment. A numerical simulation was conducted for analyzing the structural stability. The reliability testing code was established and the testing specimen of jack and loading jigs were manufactured for the compression test of the jack. After the compression test was conducted, the testing results...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-304
... hydraulic failure mechanisms for excavation stability can be distinguished into seepage-force driven mechanical failures (so called plug failure and cracking) and erosion processes. For the former, the article describes a novel solution to assess tunnel face stability subject to seepage forces, based...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-319
... of inclined loads on the stability of rock pillars. The models were created using FLAC3D for various types of pillars, and the Hoek & Brown failure criterion was applied, employing equivalent parameters to simulate medium quality rock. Through these models, the influence of inclined loads on pillars...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-270
... states to loading intensities. Results showed that fragility curves offer a numerically developed tool for design engineers to predict different damage states based on variations in rock mass quality and in situ stress state. INTRODUCTION To ensure the stability of underground excavations...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-313
... are heterogeneous and hard to estimate accurately. In this regard, surrogate models are being increasingly used as tools to accelerate learning for both research and practical applications. In this paper, we describe the application of a surrogate model for the analysis of a slope stability problem using the limit...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-337
... ABSTRACT: Wallonia and Hauts-de-France regions encounter complex developments of multi-level mining cavities that may affect the stability of shallower ones. This work focusses on an abandoned room-and-pillar quarry that extracted phosphatic chalk. On the same site, coal was mined out...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-371
... the indeterministic nature of rock bridges: they become real only when we look at them. Before failure, there are no actual rock bridges, only potential rock bridges which exist everywhere at once. INTRODUCTION Rock bridges play a crucial role in supporting and maintaining the stability of slopes and underground...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-380
... and prediction of the consequences of climate change on the stability of abandoned subsurface cavities (Conil et al. 2022). According to climate changes, water level variations and changes in water saturation degree in the pillars of the mine should be observed because of the unpredictable modification...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-354
... ABSTRACT: Maintaining wellbore stability is a significant task during drilling. This study investigates time-dependent wellbore stability of a tight gas reservoir in central Sichuan Basin of China with a porochemothermoelastic model. The results show that breakout regions gradually enlarge...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-357
... earthquakes) have aroused extensive attentions. Hence it is necessary to study on the evolution rules of reservoir in-situ stress and fault stability during the water injection process of hydraulic fracturing. In this work, a three-dimensional geomechanical model of a shale gas reservoir which located...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-459
... scale underground. This paper studies the consequences of a rapid withdrawal of hydrogen on the mechanical stability of a salt cavern. Gaseous hydrogen cooling could generate rock salt dilation, cavern closure and tensile stresses at the cavern wall. Numerical computations using the finite element...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-048
... ABSTRACT: The study of rock pillar stability is a common concern in mining engineering. It is critical to enhance predictive research of the mining effect and improve design to avoid catastrophic failures in mines operating at great depths. This results in the creation of pillars that must...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-493
... on the excavation faces, to assess the variability of discontinuity spacing and to characterize the fractured bands. INTRODUCTION The stability of a potentially unstable rock mass is highly sensitive to the continuity of the fractures cutting it. Evaluation of the spacing and persistence of these fractures...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-476
... For stability analysis of rock slopes (wedges, plane failure, toppling, etc.), the data chosen for the calculation concerning the spatial orientation of each of the families (dip and dip direction) are decisive. Moreover, the orientation and characteristics of the families influence the stability of a slope...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-491
... ABSTRACT: Hoek & Brown introduced the disturbance factor, "D," to their failure criteria in order to account for the critical effect of blast-induced damage zone in the assessment of the rock mass parameters. Considering the vital effect of blast damage extent on the surficial stability...

Product(s) added to cart

Close Modal