Results 41 to 50 of about 272,485 (255)

An Improved Method for Estimating the Strength of Jointed Rock Mass Using Drilling Technology

Geofluids, 2022
During underground excavations for civil and mining engineering purposes, the variations in mechanical properties of jointed rock mass are important, especially for the design of underground structures.
Yong Zhang, Peng Li, Fengyin Liu
doaj   +1 more source

Relation of rock mass characterization and damage [PDF]

, 2010
There are several empirical relations between the rock mass mechanical parameters (unconfined compressive strength, deformation modulus) and of the rock mass classification systems.
Ván, Péter, Vásárhelyi, Balázs
core  

APPLICABILITY OF THE GEOLOGICAL STRENGTH INDEX (GSI) CLASSIFICATION FOR THE TRUSMADI FORMATION AT SABAH, MALAYSIA [PDF]

Earth Science Malaysia, 2020
During the feasibility and preliminary design stages of a project, when very little detailed information on the rock mass and its geomechanic characteristics is not available, the use of a Rock Mass Classification Scheme (RMCS) can be of considerable ...
Rodeano Roslee, Jeffery Anak Pirah, Ahmad Nazrul Madri, Mohd Fauzi Zikiri   +3 more
doaj   +1 more source

Development of Rock Classification Systems: A Comprehensive Review with Emphasis on Artificial Intelligence Techniques

Eng
At the initial phases of tunnel design, information on rock properties is often limited. In such instances, the engineering classification of the rock is recommended as a primary assessment of its geotechnical condition. This paper reviews different rock
Gang Niu, Xuzhen He, Haoding Xu, Shaoheng Dai   +3 more
doaj   +1 more source

BILSTM-Based Deep Neural Network for Rock-Mass Classification Prediction Using Depth-Sequence MWD Data: A Case Study of a Tunnel in Yunnan, China

Applied Sciences, 2023
Measurement while drilling (MWD) data reflect the drilling rig–rock mass interaction; they are crucial for accurately classifying the rock mass ahead of the tunnel face.
Xu Cheng, Hua Tang, Zhenjun Wu, Dongcai Liang, Yachen Xie   +4 more
doaj   +1 more source

A fractal fragmentation model for rockfalls [PDF]

, 2017
The final publication is available at Springer via http://dx.doi.org/10.1007/s10346-016-0773-8The impact-induced rock mass fragmentation in a rockfall is analyzed by comparing the in situ block size distribution (IBSD) of the rock mass detached from the ...
Corominas Dulcet, Jordi, Mavrouli, Olga Christina, Ruiz Carulla, Roger   +2 more
core   +2 more sources

Applications and Limitations of Geotechnical Classification Systems [PDF]

, 2013
During the feasibility and preliminary design stages of a project, when not enoughdetailed information on the rock mass and its stress and hydrologic characteristics is available,the use of a rock mass classification scheme can be of considerable benefit.
Arbi Shehu, Megi Rusi
core  

Host Rock Classification (HRC) system for nuclear waste disposal in crystalline bedrock [PDF]

, 2006
A new rock mass classification scheme, the Host Rock Classification system (HRC-system) has been developed for evaluating the suitability of volumes of rock mass for the disposal of high-level nuclear waste in Precambrian crystalline bedrock.
Hagros, Annika
core  

A comparative study on machine learning approaches for rock mass classification using drilling data

Applied Computing and Geosciences
Current rock engineering design in drill and blast tunnelling primarily relies on engineers' observational assessments. Measure While Drilling (MWD) data, a high-resolution sensor dataset collected during tunnel excavation, is underutilised, mainly ...
Tom F. Hansen, Georg H. Erharter, Zhongqiang Liu, Jim Torresen   +3 more
doaj   +1 more source

Petrogenesis of diachronous mixed siliciclastic-carbonate megafacies in the cool-water Oligocene Tikorangi Formation, Taranaki Basin, New Zealand [PDF]

, 2003
The Oligocene (Whaingaroan-Waitakian) Tikorangi Formation is a totally subsurface, lithostratigraphically complex, mixed siliciclastic-limestone-rich sequence forming an important fracture reservoir within Taranaki Basin, New Zealand.
Berggren W. A., Bernecker T., Driscoll N. W., Hood S. D., Hudson D. S., Hume T. R., Mauri S., Morgans H. E. G., Mullins H. T., Mullins H. T., Naish T. R., Nelson C. S., Nelson C. S., Palmer J. A., Rao C. P., Scott G. H., Simpson J., Tucker M., Westphal H., Young J.   +19 more
core   +2 more sources