Results 251 to 260 of about 273,199 (309)

A geo-engineering classification for rocks and rock masses

International Journal of Rock Mechanics and Mining Sciences, 2004
Abstract In this article, an attempt is made to assess the reliability of predicting the uniaxial compressive strength and the corresponding modulus of a rock mass by current approaches. These two basic engineering properties, when estimated from rock mass rating (RMR), Q and geological strength index (GSI), indicate hardly any change in the ...
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SEISMIC CLASSIFICATION OF ROCK MASS QUALITIES*

Geophysical Prospecting, 1979
AbstractCorrelations between longitudinal velocities and rock mechanic parameters such as fracture frequencies and “Rock Quality Designation” (RQD) values have been studied, based upon velocity data from various rock types and different geographical locations.The dispersion of values at different sites studied is on average ± 0.8 cracks per meter and ...
B. SJØGREN, A. ØFSTHUS, J. SANDBERG
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Is there a Universal Rock Mass Classification System?

58th U.S. Rock Mechanics/Geomechanics Symposium
ABSTRACT: This paper examines the consequences of subjectivity on universal design methodologies, and emphasizes the need for a cohesive and globally accepted rock mass classification (RMC) framework to foster innovation and efficiency in rock engineering projects. Challenges posed by varied rock mass classification
E. Ambah, D. Elmo
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Classification of Rock Masses

2020
C.P. Chugh, Ken Steele, V.M. Sharma
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A modified rock mass classification system for TBM tunnels and tunneling based on the HC method of China

International Journal of Rock Mechanics and Minings Sciences, 2021
Qiuming Gong, Hongyi Xu, Yuedu Chen
exaly  

A detailed study of the CHN-BQ rock mass classification method and its correlations with RMR and Q system and Hoek-Brown criterion

International Journal of Rock Mechanics and Minings Sciences, 2023
Aiqing Wu, Wen Zhao, Yihu Zhang
exaly  

Real-time prediction of rock mass classification based on TBM operation big data and stacking technique of ensemble learning

Journal of Rock Mechanics and Geotechnical Engineering, 2022
Shaokang Hou, Yaoru Liu
exaly  

Rock mass classification

1997
John P. Harrison, John A. Hudson
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Prediction model of rock mass class using classification and regression tree integrated AdaBoost algorithm based on TBM driving data

Tunnelling and Underground Space Technology, 2020
Quansheng Liu, Xing Huang, Xin Yin
exaly  

Correlation of rock mass classification methods in Korean rock mass

2020
Choon Sunwoo, Sei-Ho Hwang
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