Rock mass classification

Rock mass classification is an extremely powerful and useful tool in rock engineering, and this lecture gives an introduction to rock mass classification. It puts a number to the quality of a rock mass, and numbers facilitate the application of engineering in rock masses. Several rock mass classification systems are described in the lecture, as well as examples of applications of classification in the evaluation of stability of excavations, estimation of rock support requirements, and determination of rock mass deformation and strength parameters. The lecture will help new users to become proficient in the application of rock mass classifications.
This lecture is presented by Dick Stacey,
Emeritus Professor, University of the Witwatersrand, Johannesburg

[@kakashi1402]

Thank you Professor Dick, I listen your lecture till the end, and I get some knowledge from here.

[@westonmulenga6421]

Thank so much Sir, am taking Rock Mechanics and you have just helped me understand the whole concept of Rock classifications

[@civilengineeringknowledgeb2955]

great explanation watching in 2024

[@mujeebahmad3458]

Thank you very much for your time and efforts it was so east to understand with the example the only thing i did not get it was Jv calculation

[@engismael5]

It is clear and nice content. Could you please provide us with an application of applying the rock mass classification in field?

[@aidos4381]

Many thanks, Sir.
This video is very helpful and clear. However, could you clarify one question? According to the guide, "geotechnical guidelines for a transition from open pit to underground mining geotechnical characterization", p 106, the rating associated with JS varies from 3 (3 sets of structures with spacings of 0.1 m) to 35 (1 set of structures with spacings of 2 m). while in the video, 42.02sec, JS varies from 0 to 25.
Many thanks

[@shesnotadude]

Can u give us problems involving RQD and RMR, good sir?

[@mariacristinaorac8915]

Hi sir. Could you discuss the applications of Rock Classification System in different Mining Methods? Thank you. Hope you've been well amidst this pandemic. God Bless.
-a struggling mining engineering student :)

[@lebelobrady8786]

Thank you Prof

[@muhammadghaderee2659]

great

[@ilyeshezaimia733]

thank you

[@Gsb3356]

Thanks sir

[@habinezaildephonse817]

Thanks from this geotechnical study.

[@munawarhussain7878]

WoW

[@MrSudeepsharma]

support 1:09:22

[@brian1372]

thx

[@awetway]

geotechnical engineering

[@bonganimazibuko8979]

Thank you Prof