scholarly journals Determination of geological strength index of jointed rock mass based on image processing

2017 ◽  
Vol 9 (4) ◽  
pp. 702-708 ◽  
Author(s):  
Kunui Hong ◽  
Eunchol Han ◽  
Kwangsong Kang
Keyword(s):  
Image Processing ◽  
Rock Mass ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Geological Strength Index ◽  
Strength Index

Estimation of Strength of Massive Jointed Rock Mass Based on Generalized Hoek-Brown Criterion

2012 ◽  
Vol 204-208 ◽  
pp. 259-262
Author(s):  
Feng Shan Han
Keyword(s):  
Regression Analysis ◽  
Rock Mass ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Geological Strength Index ◽  
Engineering Analysis ◽  
Strength Index ◽  
Practical Engineering ◽  
Coulomb Criterion

The strength of massive jointed rock mass can be estimated based on Mohr-Coulomb criterion and Hoek-Brown criterion without making expensive experiment of massive jointed rock mass in site. Only using regression analysis, through transformation，Mohr-Coulomb criterion is compared with Hoek-Brown criterion, the strength of jointed rock mass can be economically obtained. In this paper, based on Geological Strength Index GSI and parameter Jv(Joint/m3), the strength of massive jointed rock mass can be obtained. As an example of GSI 24 for massive jointed rock mass is taken, generalized Hoek-Brown criterion is analyzed linearly and approximately using regression analysis, strength of jointed rock mass can be economically obtained That provide economical and effective method for practical engineering analysis

scholarly journals Review of the Geological Strength Index (GSI) as an Empirical Classification and Rock Mass Property Estimation Tool: Origination, Modifications, Applications, and Limitations

2020 ◽  
Vol 2020 ◽  
pp. 1-18 ◽  
Author(s):  
Sajjad Hussian ◽  
Noor Mohammad ◽  
Zahid Ur Rehman ◽  
Naseer Muhammad Khan ◽  
Khan Shahzada ◽  
...  
Keyword(s):  
Rock Mass ◽  
Quantitative Estimation ◽  
Deformation Modulus ◽  
Evaluation Process ◽  
Jointed Rock ◽  
Strength Properties ◽  
Geological Strength Index ◽  
Strength Index ◽  
Engineering Structures ◽  
Geomechanical Properties

The geological strength index (GSI) is one of the most exceptional rock mass classification system which is used to evaluate very weak and highly jointed rock mass by different approaches and related to rock mass geomechanical properties including generalized Hoek & Brown constants, deformation modulus, strength properties, and Poisson’s ratio for an appropriate design of tunnels, caverns, and other engineering structures. The distinctiveness of this system over the rock mass rating (RMR), Q-system, and other empirical methods is as follows: it utilized field observations, blockiness of rock mass, and surface joint characteristics during the evaluation process of rock mass and efficiently espoused as an empirical tool for estimation of geomechanical properties of rock mass required for pre-post stability of engineering structures using numerical modeling. This study presents the review of the 19 years of research studies conducted by different researchers about the GSI in a systematic way, i.e., origination, modifications, applications, and limitations. Furthermore, this study will provide a better understanding to field professionals (geologists, mining and civil engineers) about the qualitative and quantitative estimation of the GSI and its application as an empirical estimating tool for an appropriate design of engineering structures in rock mass environments.

scholarly journals The Survey and the Analysis of Rock Joint and the Determination of Jointed Rock Mass Model.

1996 ◽  
pp. 145-157
Author(s):  
Chikaosa Tanimoto ◽  
Kiyoshi Kishida ◽  
Koji Tabata ◽  
Yoichi Yoshizu ◽  
Kimihiko Kunii
Keyword(s):  
Rock Mass ◽  
Rock Joint ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Mass Model

scholarly journals Estimation of serpentinite rock mass strength of Placetas - Cuba underground gold mine deposit

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Adeoluwa O Oluwaseyi ◽  
Olawale O Ajibola
Keyword(s):  
Rock Mass ◽  
Technical Information ◽  
Geological Strength Index ◽  
Drilling Process ◽  
Gold Mine ◽  
Well Log ◽  
Strength Index ◽  
Global Strength ◽  
Type Of Failure

This study estimated the strength of the serpentinite rock mass of the underground gold mine “Oro Descanso” Placetas, Cuba. The rock mass was classified into its lithological group of massive, sheared serpentinite rocks and gabbros. The geo-technical information from the well log data obtained during drilling process (geological logs). The structural analysis was carried out through field observation and quantified by Geological Strength Index (GSI) of average values for massive serpentinite 60, sheared serpentinite 38 and gabbros 78. The generalized Hoek-Brown criterion with software programme, Rocklab 1.0, 2004 version was employed for the analysis and the determination of the rock mass local compressive strength (massive serpentinite = 1.733Mpa; sheared serpentinite = 0.464Mpa; gabbros = 10.354Mpa) and the global strength (massive serpentinite = 6.561Mpa, sheared serpentinite = 5.657Mpa and gabbros = 22.547Mpa). These estimated values characterize brittle type of failure mode and thus supports are recommended.

scholarly journals THE USE OF GEOLOGICAL STRENGTH INDEX GSI. RECOMMENDATIONS, LIMITATIONS AND RANGES OF VALUES IN MOST COMMON ROCK TYPES

2004 ◽  
Vol 36 (4) ◽  
pp. 1767 ◽  
Author(s):  
Β. Μαρίνος ◽  
Π. Μαρίνος ◽  
E. Hoek
Keyword(s):  
Rock Mass ◽  
Structural Characteristics ◽  
Geological Strength Index ◽  
Rock Masses ◽  
Strength Index ◽  
Rock Types ◽  
Quantitative Characterisation ◽  
General Guidance

After one decade of application of the Geological Strength Index, GSI, and its extensions, in the quantitative characterisation of the rock mass, the present paper attempts to answer the questions that have been raised by the users about the determination of the GSI for various qualities of rock masses and various conditions. Recommendations are given and cases are discussed where GSI is not applicable. The paper also gives general guidance on the field of GSI values of rock masses for the most common rock types based on their pétrographie and their most usual structural characteristics.

scholarly journals Determination of Distance Required to Ensure Stope and Footwall-drift Non-interaction Zone based on Geological Strength Index

2019 ◽  
Vol 23 (1) ◽  
pp. 17-25
Author(s):  
Mehmet Volkan Ozdogan ◽  
Alper Gonen
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Rock Mass ◽  
Minimum Distance ◽  
Geological Strength Index ◽  
Interaction Zone ◽  
The Finite Element Method ◽  
Strength Index ◽  
Copper Ore

In the Bakibaba Copper Mine, the longhole stoping method is used in the production of copper ore. Stability problems have occurred at times on the footwall drift due to the interaction between the footwall drift and stope. In this study, we propose a method for estimating the minimum distance necessary to ensure a non-interaction zone between the footwall drift and stope. We used the finite element method and various distances between the footwall drift and stope and the displacements over drifts as parameters. We also performed analyses on various geological strength index values from low to high to determine the effect of the rock mass on the interaction between the footwall drift and stope

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