Results 51 to 60 of about 117,527 (204)

Landslide motion assessment including rate effects and thermal interactions: revisiting the Canelles landslide [PDF]

, 2019
The re-activation of a large (40 Mm3) landslide on the valley slopes of a reservoir motivated a research initiative to estimate the risk of a fast-sliding mass moving into the reservoir.
Alonso Pérez de Agreda, Eduardo, Alvarado Bueno, Mauricio, Pinyol Puigmartí, Núria Mercè   +2 more
core   +2 more sources

Stochastic assessment of hard rock pillar stability based on the geological strength index system

Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2021
Hard rock pillar is a crucial rock mass structure to maintain the stability of underground mine. It needs of special attention to analyze its stability from the point of rock mass quality. In this paper, the geological strength index (GSI) representing the rock mass quality of the hard rock pillar is examined as a new influence factor of stability, and
Chuanqi Li, Jian Zhou, Danial Jahed Armaghani, Wenzhuo Cao, Saffet Yagiz   +4 more
openaire   +1 more source

Spatial deformation prediction method of fractured rock tunnel based on quantified GSI and its application

Scientific Reports
Determining rock mass mechanical parameters and accurately predicting tunnel deformation during tunnel construction remain challenging tasks. This study introduces a novel approach to calculate the Geological Strength Index by integrating indoor rock ...
Caihua Shen, Zhikang Zeng, Huibo Lou, Zhifan Yang, Wenbo Gu   +4 more
doaj   +1 more source

Choice and substantiation of stable crown shapes in deep-level iron ore mining [PDF]

, 2018
Purpose. The aim of the paper is to select and substantiate stable shapes of crown pillars through determining regularities of rock pressure impacts on their stability depending on the crown shapes, mining depths and iron ore hardness. Methods.
Kalinichenko, O, Kalinichenko, V, Morhun, O, Pysmennyi, S, Stupnik, M   +4 more
core   +1 more source

Determination of Segari Rock Slope Excavation Technique using Geological Strength Index (GSI)

International Journal of Engineering & Technology, 2018
Segari - Ayer Tawar rock materials were generally characterized as slightly weathered (Grade II) to moderately weathered (Grade III).  Laboratory tests such as Brazilian tensile strength and point load strength index including direct shear strength were carried out using collected weathering sample from borehole to assess the rock strength.
R Roslan, RC Omar, I.N.Z. Baharuddin, Hairin Taha, M.M. Fared, W.N.S.W. Hashim   +5 more
openaire   +2 more sources

Automatic Cutting Speed Control System of Boom-Type Roadheader Based on Geological Strength Index

Minerals, 2022
The boom-type roadheader is the foremost mining equipment in coal mines. At present, the automatic cutting technology is still immature for adjusting cutting speed automatically in accordance with rock strength, resulting in energy dissipation. In this study, we put forward a method with respect to detecting the geological strength index of coal seam ...
Zheng Dong, Xuhui Zhang, Wenjuan Yang, Mengyu Lei, Chao Zhang, Jicheng Wan, Lei Han   +6 more
openaire   +1 more source

Effect of blast induced rock fragmentation and muckpile angle on excavator performance in surface mines [PDF]

, 2019
Purpose. A fit excavator in a surface mine gives a trouble free production. To maintain the condition and safety of an excavator, proper sizes of rock fragmentation and muckpile parameters are crucial besides its maintenance.
Choudhary, B.S.
core   +1 more source

Tunnel support design by comparison of empirical and finite element analysis of the Nahakki tunnel in mohmand agency, pakistan

Studia Geotechnica et Mechanica, 2016
The paper analyses the geological conditions of study area, rock mass strength parameters with suitable support structure propositions for the under construction Nahakki tunnel in Mohmand Agency. Geology of study area varies from mica schist to graphitic
Riaz Asif, Jamil Syed Muhammad, Asif Muhammad, Akhtar Kamran   +3 more
doaj   +1 more source

Depth of Cracking beneath Impact Craters: New Constraint for Impact Velocity [PDF]

, 2002
Both small-scale impact craters in the laboratory and less than 5 km in diameter bowl-shaped craters on the Earth are strength (of rock) controlled. In the strength regime, crater volumes are nearly proportional to impactor kinetic energy.
Ahrens, Thomas J., Coker, Demirkan, Xia, Kaiwen   +2 more
core   +1 more source

Strength of massive to moderately jointed hard rock masses

Journal 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