outline n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
OUTLINE PowerPoint Presentation
Download Presentation
OUTLINE

Loading in 2 Seconds...

play fullscreen
1 / 32

OUTLINE - PowerPoint PPT Presentation


  • 138 Views
  • Uploaded on

OUTLINE. Engineering Properties of Rock Formations. 1- Rock Material and Rock Mass Concept 2- Rock Material Properties 3- Rock Mass Properties 4- Investigation Methods of their Engineering Properties. INTACT ROCK & ROCK MASS. ROCK DISCONTINUITIES. Definition.

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

PowerPoint Slideshow about 'OUTLINE' - padma


An Image/Link below is provided (as is) to download presentation

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
outline
OUTLINE

EngineeringProperties of RockFormations

1- RockMaterialandRockMassConcept

2- RockMaterialProperties

3- RockMassProperties

4- InvestigationMethods of theirEngineeringProperties

rock discontinuities
ROCK DISCONTINUITIES

Definition

A discontinuity in geotechnicalengineeringis a plane or surface that marks a change in physical or chemical characteristics in a soil or rock mass.

A discontinuity can be, for example, abedding, schistosity, foliation, joint, cleavage, fracture, fissure, crackorfaultplane.

Discontinuities may occur multiple times with broadly the same mechanical characteristics in a discontinuity set, or may be a single discontinuity. A discontinuity makes a soil or rock mass anisotropic

rock discontinuities2
ROCK DISCONTINUITIES

Properties

  • ROUGHNESS in largescale
      • wavyorstraight
  • ROUGHNESS in smallscale
      • roughorsmooth
  • INFILL material
      • mineral infillorclayinfillor no infill
  • PERSISTENCE
      • 1-3 metersor >10 meters
  • APERTURE
      • closedor nocontact
  • SPACING
      • 1-5 cmor >1 meters
  • WEATHERING conditions
      • freshorcompletelyweathered
shear stregth of rock discontinuities
SHEAR STREGTH OF ROCK DISCONTINUITIES

EngineeringProperties of RockFormations

t = c + s tan f

investigations
INVESTIGATIONS

EngineeringProperties of RockFormations

DRILLING

(Subsurface

Investigations)

investigations1
INVESTIGATIONS

EngineeringProperties of RockFormations

DRILLING RODS

investigations2
INVESTIGATIONS

EngineeringProperties of RockFormations

BOREHOLE LOGS AND SAMPLE BOXES

slide10

ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

RQD

(RockQualityDesignation)

AND

CORE RECOVERY CONCEPTS

slide11

ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

RQD

(RockQualityDesignation)

AND

CORE RECOVERY CONCEPTS

rock mass classifications
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

RMR

ROCK

MASS

RATING

AND

ROCK MASS

ENGINEERING

PROPERTIES

rock mass classifications1
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

RMR

ROCK

MASS

RATING

AND

ROCK MASS

ENGINEERING

PROPERTIES

rock mass classifications2
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

Where RQD is Rock Quality Designation,

Jn is joint set number,

Jris joint roughness number,

Ja is joint alteration number,

Jw is joint water reduction factor, and

SRF is stress reduction factor.

It should be noted that

RQD/Jn is a measure of block size,

Jr/Ja is a measure of joint frictional strength, and Jw/SRF is a measure of joint stress

Q-SYSTEM

AND

ROCK MASS

ENGINEERING

PROPERTIES

rock mass classifications3
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

GSI-SYSTEM

AND

ROCK MASS

ENGINEERING

PROPERTIES

t = c + s tan f

rock mass classifications4
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

GSI ?

rock mass classifications5
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

GSI ?

rock mass classifications6
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

GSI ?

rock mass classifications7
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

GSI ?

rock mass classifications8
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

GSI ?

rock mass classifications9
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

GSI ?

rock mass classifications10
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

GSI ?

rock mass classifications11
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

GSI ?

rock mass classifications12
ROCK MASS CLASSIFICATIONS

EngineeringProperties of RockFormations

RQD ?

slide25

EARTH MAKING SUBSTANCES ROCKS

  • ROCK SLOPE STABILITY/ INSLOPE&OUTSLOPE
earth making substances rocks
EARTH MAKING SUBSTANCES ROCKS
  • ROCK SLOPE STABILITY
slide27

EARTH MAKING SUBSTANCES SOILS

  • GRAIN SIZE
  • Thesmallerthegrain size or
  • Thelowerthecompactiondegreeresults in;
  • * morepores,
  • * morewater in pores,
  • * moresettlement,
  • * lessbearingcapacity,
  • Cohesiongovernsforsmallsizes of particleswhereasFrictionanglegovernsforlargeparticles

t = c + s tan f

slide28

EARTH MAKING SUBSTANCES SOILS

  • SOIL BEHAVIOUR/SETTLEMENT
slide29

EARTH MAKING SUBSTANCES SOILS

  • SOIL BEHAVIOUR/BEARING CAPACITY
slide30

EARTH MAKING SUBSTANCES SOILS

  • SOIL BEHAVIOUR/LIQUEFACTION

t = c + s tan f

  • LOOSE SOIL DENSIFY DURING LIQUEFACTION…
slide31

EARTH MAKING SUBSTANCES SOILS

  • SOIL BEHAVIOUR/LIQUEFACTION
  • SOIL BEHAVES LIKE LIQUID AND HAVE LITTLE OR NO SHEAR STRENGTH AT ALL…
slide32

EARTH MAKING SUBSTANCES SOILS

  • SOIL BEHAVIOUR/LIQUEFACTION