Results 21 to 30 of about 4,335 (178)

Estimation of the rock deformation modulus and RMR based on data mining techniques [PDF]

open access: yes, 2012
In this work Data Mining tools are used to develop new and innovative models for the estimation of the rock deformation modulus and the Rock Mass Rating (RMR). A database published by Chun et al. (2008) was used to develop these models. The parameters of
Martins, Francisco F.   +1 more
core   +1 more source

Classification Method of Rock Structure and Rock Mass Quality of Surface Granite: Geological Disposal of High-Level Radioactive Waste in China

open access: yesAdsorption Science & Technology, 2022
The engineering quality of rock mass is a key factor to evaluate the long-term stability and safety of high-level radioactive waste (HLW) geological disposal engineering and is also the important basis for disposal site selection.
Wei Xiang, Hanlie Cheng, David Cadasse
doaj   +1 more source

Improving rock classification in terms of explosivity [PDF]

open access: yes, 2019
Purpose. To improve rock classification in terms of explosivity relying upon the detailed analysis of characteristics of rating classifications available in the Russian Federation and in the world. Methods.
Kirsanov, A   +5 more
core   +1 more source

Use of Rock Mass Rating (RMR) values for support designs of tunnels excavated in soft rocks without squeezing problem [PDF]

open access: yes, 2019
Effect of the rock material strength on the RMR value and tunnel support designs were investigated within this study including site works, analytical and numerical analyses.
Demir, Serhat, Komurlu, Eren
core   +1 more source

Rock Mass Characterizations and Kinematic Analysis for Construction Design Method of Diversion Tunnel of Dolok Dam, Central Java [PDF]

open access: yesE3S Web of Conferences, 2023
Investigation of slope stability in the design of the tunnel portal is important to minimize slope failure. This research aims to describe the rock mass characterizations and classifications using Geological Strength Index (GSI) and Rock Mass Rating (RMR)
Sandria Lutfie Arlan   +2 more
doaj   +1 more source

Application of rock mass classification methods for slope stability design in open pit of Otso Gold Oy (Laivan Kaivos) [PDF]

open access: yes, 2022
Rock Mass Classification systems are used in the mining industry to classify rock types based on their physical and mechanical properties. It is one of the basic requirements on which the development of the mine will be based.
Asiedu, Arnold
core   +3 more sources

Weightage Effect during Back-Calculation of Rock-Mass Quality from the Installed Tunnel Support in Rock-Mass Rating and Tunneling Quality Index System

open access: yesApplied Sciences, 2019
In extensively used empirical rock-mass classification systems, the rock-mass rating (RMR) and tunneling quality index (Q) system, rock-mass quality, and tunnel span are used for the selection of rock bolt length and spacing and shotcrete thickness.
Jonguk Kim   +4 more
doaj   +1 more source

ROCK MASS QUALITY EFFECTED BY LINEAMENT USING ROCK MASS RATING (RMR)– CASE STUDY FROM FORMER QUARRY SITE [PDF]

open access: yesEarth Science Malaysia, 2017
Lineament plays major role in stability and strength of rock mass. The presence of lineaments will decrease the strength of rock mass. Lineament can be identified or trace using topographic map, aerial photographs or satellite images. In this research,
Hamzah   +3 more
doaj   +1 more source

Recommendation of excavation method and support system based on engineering geology at Riam Kiwa Dam diversion tunnel, South Kalimantan, Indonesia [PDF]

open access: yesE3S Web of Conferences
River flow diversion is one of the most critical factors that must be considered for the success of dam construction. Soil and rock can support and load; therefore, understanding their strength and properties before tunnel construction is essential ...
Muhammad Fadel   +2 more
doaj   +1 more source

Alternative models for the calculation of the RMR and Q indexes for granite rock masses [PDF]

open access: yes, 2007
Empirical classification systems like the RMR and Q are often used in current practice of geotechnical structures design built in rock masses. They allow obtaining an overall description of the rock mass and the calculation, through analytical ...
Correia, A. Gomes   +5 more
core   +1 more source

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