Results 21 to 30 of about 273,199 (309)

Research on failure mechanism and support technology of fractured rock mass in an undersea gold mine

open access: yesGeomatics, Natural Hazards & Risk, 2023
The surrounding rock control has been a difficult problem for fractured rock mass in hard rock mines. This article describes a case study of the failure mechanisms and the support design technology for fractured rock mass drifts in Xinli Gold Mine. Based
Xingdong Zhao   +3 more
doaj   +1 more source

Joint Investigation and 3D Visual Evaluation of Rock Mass Quality

open access: yesAdvances in Civil Engineering, 2020
In order to realize the high efficiency quality classification and three-dimensional visualization of engineering rock mass and to solve the technical difficulties of the traditional rock mass quality evaluation method such as high labor intensity, long ...
Haiping Yuan   +4 more
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

Quantitative granitic weathering assessment for rock mass classification optimization of tunnel face using image analysis technique

open access: yesAin Shams Engineering Journal, 2023
Weathering degree is one of the key criteria used to determine tunnel support with the main difficulty is in assessing the weathering grade of the tunnel face. This study applied CIEL*a*b colour space and image analysis to a rock mass tunnel face.
Intan Norsheira Yusoff   +4 more
doaj   +1 more source

Characterization of rock slopes through slope mass rating using 3D point clouds [PDF]

open access: yes, 2016
Rock mass classification systems are widely used tools for assessing the stability of rock slopes. Their calculation requires the prior quantification of several parameters during conventional fieldwork campaigns, such as the orientation of the ...
Abellán   +29 more
core   +2 more sources

Rock Slope Stability Of Ponorogo - Pacitan Road Km 232.5 Using Rock Mass Rating (Rmr) And Rocplane Software

open access: yesRekayasa Sipil, 2021
Geological structures and discontinuities in the rock are weak areas and groundwater infiltration pathways. The existence of geological structures and discontinuities will reduce the level of rock shear strength and the main implication is to increase ...
Hasyim Alhadar   +2 more
doaj   +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

Variable Weight Matter–Element Extension Model for the Stability Classification of Slope Rock Mass

open access: yesMathematics, 2021
The slope stability in an open-pit mine is closely related to the production safety and economic benefit of the mine. As a result of the increase in the number and scale of mine slopes, slope instability is frequently encountered in mines.
Shan Yang, Zitong Xu, Kaijun Su
doaj   +1 more source

Investigating rock mass failure precursors using a multi-sensor monitoring system. Preliminary results from a test-site (Acuto, Italy) [PDF]

open access: yes, 2017
In the last few years, several approaches and methods have been proposed to improve early warning systems for managing risks due to rapid slope failures where important infrastructures are the main exposed elements. To this aim, a multi-sensor monitoring
Fantini, Andrea   +3 more
core   +1 more source

A New Reliability Rock Mass Classification Method Based on Least Squares Support Vector Machine Optimized by Bacterial Foraging Optimization Algorithm

open access: yesAdvances in Civil Engineering, 2020
Classification of the surrounding rock is the basis of tunnel design and construction. However, conventional classification methods do not allow dynamic tunnel construction adjustments because they are time-consuming and do not consider the randomness of
S. Zheng   +3 more
doaj   +1 more source

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