Results 21 to 30 of about 4,379 (222)

Stability analysis of underground mine hard rock pillars via combination of finite difference methods, neural networks, and Monte Carlo simulation techniques

open access: yesUnderground Space, 2021
Pillar stability is always evaluated using the safety factor (SF), which is defined as the ratio of pillar strength to pillar stress. However, most researchers have estimated pillar stress using the pillar shape ratio (w/h), uniaxial compressive strength
Chuanqi Li   +3 more
doaj   +1 more source

Revisiting rock classification to estimate rock mass properties

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2019
This paper presents the results of ongoing research carried out by the author exploring methods to provide a more robust estimate of rock mass properties specifically for use in tunnel design.
Robert Bertuzzi
doaj   +1 more source

GROUND VIBRATIONS LEVEL CHARACTERIZATION THROUGH THE GEOLOGICAL STRENGTH INDEX (GSI)

open access: yesRudarsko-geološko-naftni Zbornik, 2017
This paper analyses the results of trial, construction and quarry blasting, carried out in sediment rock deposits, mainly limestone and dolomite, at diff erent locations in the Republic of Croatia.
Josip Mesec   +2 more
doaj   +1 more source

Calculating Bias-Free Volumetric Fracture Counts (VFCs) in Underground Works and Their Use in Estimating Rock Mass Strength and Deformability Parameters

open access: yesApplied Sciences, 2022
This paper initially provides a practical example on how to estimate a bias-free volumetric fracture count (VFC—fractures/m3) in a tunnel and incorporate it into a new and unified volumetric-based Geological Strength Index (V-GSI) chart. The quantified V-
Paul Schlotfeldt   +2 more
doaj   +1 more source

Implementation of probabilistic approach to rock mass strength estimation while excavating through fault zones [PDF]

open access: yes, 2019
Purpose. The paper addresses the rock mass state estimation while excavating a cross-heading through the area of regional fault “Bohdanivskyi” based on probabilistic approach to assessing the rock strength. Methods.
Babets, D   +4 more
core   +1 more source

GROUND VIBRATIONS LEVEL CHARACTERIZATION THROUGH THE GEOLOGICAL STRENGTH INDEX (GSI)

open access: yesRudarsko-geološko-naftni zbornik, 2016
This paper analyses results of trial, construction and quarry blasting, carried out in sediment rock deposits, mainly limestone and dolomite, at the different locations in Republic Croatia. The division of the three test groups was based on the lithology changes and GSI values of the rock units at these locations.
Mesec, Josip   +2 more
openaire   +4 more sources

Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia [PDF]

open access: yesE3S Web of Conferences, 2021
Empirical design of support system at the Tunnel 6 of the Jakarta – Bandung high-speed railway was based on the Basic Quality (BQ) system, which had not been adopted in Indonesia.
Malda Octavika   +2 more
doaj   +1 more source

Characterization and mechanical properties of the Eocene Buda Marl [PDF]

open access: yes, 2007
The mechanical behavior of the Buda Marl lies between those of rock and soil; it is therefore appropriate to define it as both weak rock and strong soil: some marl types behave like a weak rock and others like soil.
Görög, Péter
core   +1 more source

Strength of massive to moderately jointed hard rock masses

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2019
The Hoek-Brown (HB) failure criterion and the geological strength index (GSI) were developed for the estimation of rock mass strength in jointed and blocky ground where rock mass failure is dominated by sliding along open joints and rotation of rock ...
R.P. Bewick, P.K. Kaiser, F. Amann
doaj   +1 more source

EVALUASI FAKTOR KEAMANAN LERENG BERDASARKAN NILAI GEOLOGICAL STRENGTH INDEX (GSI) DAN UNIAXIAL COMPRESSIVE STRENGTH (UCS) DALAM PERENCANAAN LERENG

open access: yesJurnal Kacapuri : Jurnal Keilmuan Teknik Sipil, 2023
Suatu konstruksi yang memerlukan pekerjaan galian tanah (batuan) membutuhkan perencanaan yang baik karena sisi-sisi galian akan terbentuk lereng. Faktor Keamanan (FK) suatu lereng dipengaruhi oleh beberapa faktor, salah satunya adalah nilai Geological Strength Index (GSI) dan Uniaxial Compressive Strength (UCS).
Widarto Sutrisno   +4 more
openaire   +1 more source

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