A G H 2010

1 / 29

# A G H 2010 - PowerPoint PPT Presentation

A G H 2010. Badania Polowe. Teoria , Metodologia i Praktyka. Profesor Zdzis ł aw Bieniawski. “Idea” #1. Badania polowe w Geoinżynierii. Plate jacking tests. Another well-known in situ test. Large Flat Jack (LFJ) test.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'A G H 2010' - dai-townsend

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

A G H 2010

Teoria,

Metodologia

iPraktyka

Profesor Zdzisław Bieniawski

“Idea” #1

w

Geoinżynierii

Another well-known in situ test

Large

Flat

Jack

(LFJ) test

Rock mass deformation Modulus (GPa)

EMASS = 10[(RMR - 10)/40]and for RMR > 50: EMASS = 2RMR – 100

Latest correlations (Galera 2008):

EMASS= 147 e[(RMR - 100)/24] - 0.2RMR

Alternatively for RMR < 50: EMASS= 0.09RMR

and for

RMR > 50: EMASS = 0.09 RMR + 1.06 (RMR-50) + 0.015(RMR-50)2

Correlation coefficient: R = 0.89.

Rock Mass Strength

Kalamaras, 1995

Rock mass deformation Modulus

Another correlation by Galera 2008:

EMASS= Eintacte[(RMR - 100)/36]

For full range of RMR

Rock mass strength (MPa)

sMASS = sc intacte[(RMR - 100)/24]Kalamaras [1995]

As per the last correlation of Galera 2008:

EMASS= E intacte[(RMR - 100)/36]

it follows:

EMsM

Eisc

2/3

concerning Rock Mass Strength

W a r n i n g !

This expression:

EMsM

Eisc

is preferable to the Hoek – Brown criterion in which:

m/mi= e[(RMR - 100)/28]ands= e[(RMR - 100)/9]

Due to uncertainty of mi values and equating RMR with GSI

2/3

Example of needed Rock Mechanics focus

Mechanized excavation in Mining and Tunneling

deserves special attention in Rock Mechanics today

Consider the case of TBM tunneling:

determination of rock mass excavability

World Record!

The largest

Tunnel Boring Machine

(T B M)

cannot function

without Rock Mechanics!

Correlation between Rock Mass Excavability index (RME) and Average Rate of Advance (m/day) for Double Shield TBMs
“Idea” #3

Maszyny tarczowe

T B M