Abstract
Today, grouting is used as an aid in ground improvement in most civil and mining projects. Groutability and grout penetration depth are subjects that are considered in grouting operation. As discontinuities compose the main paths for fluid flow in jointed rock mass, geometric characteristics, such as joint aperture, spacing and orientation, affect the grout flow. On the other hand, fluid flow in joint is a hydromechanical process and the state of applied stress on joint affects the fluid flow. Knowledge of these parameters has advantages in prediction of grouting results (grout penetration and intake). Unlike water (Newtonian fluid), stable cement-based grout usually acts as a Bingham fluid. In this study the effect of important joint geometric characteristics on grout intake and penetration depth was simulated hydromechanically using the UDEC code. The gained results show that grout intake and penetration depth increase as joint aperture and normal stiffness increase and in-situ stress decreases. Increase in joint spacing does not have any effect on penetration depth but decreases the grout intake. The effect of joint orientation on grouting process is strongly dependent on in-situ stress state.
| Original language | English |
|---|---|
| Title of host publication | ISRM International Symposium - 5th Asian Rock Mechanics Symposium 2008, ARMS 2008 |
| Editors | Abbas Mahdi, Abdolhadi Ghazvinian |
| Publisher | International Society for Rock Mechanics |
| Pages | 1125-1133 |
| Number of pages | 9 |
| ISBN (Print) | 9781617823527 |
| Publication status | Published - Jan 1 2008 |
| Externally published | Yes |
| Event | 5th Asian Rock Mechanics Symposium 2008, ARMS 2008 - Tehran, Iran, Islamic Republic of Duration: Nov 24 2008 → Nov 26 2008 |
Publication series
| Name | ISRM International Symposium - 5th Asian Rock Mechanics Symposium 2008, ARMS 2008 |
|---|
Conference
| Conference | 5th Asian Rock Mechanics Symposium 2008, ARMS 2008 |
|---|---|
| Country | Iran, Islamic Republic of |
| City | Tehran |
| Period | 11/24/08 → 11/26/08 |
Fingerprint
Keywords
- Grout Intake
- Grout Penetration Depth
- Grout Rheology
- Jointed Rock Mass
- Numerical Analysis
ASJC Scopus subject areas
- Geochemistry and Petrology
- Geophysics
Cite this
Numerical analysis of the effect of joint geometric parameters on grouting process in jointed rock mass. / Maadikhah, A.; Mortazavi, A.
ISRM International Symposium - 5th Asian Rock Mechanics Symposium 2008, ARMS 2008. ed. / Abbas Mahdi; Abdolhadi Ghazvinian. International Society for Rock Mechanics, 2008. p. 1125-1133 (ISRM International Symposium - 5th Asian Rock Mechanics Symposium 2008, ARMS 2008).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Numerical analysis of the effect of joint geometric parameters on grouting process in jointed rock mass
AU - Maadikhah, A.
AU - Mortazavi, A.
PY - 2008/1/1
Y1 - 2008/1/1
N2 - Today, grouting is used as an aid in ground improvement in most civil and mining projects. Groutability and grout penetration depth are subjects that are considered in grouting operation. As discontinuities compose the main paths for fluid flow in jointed rock mass, geometric characteristics, such as joint aperture, spacing and orientation, affect the grout flow. On the other hand, fluid flow in joint is a hydromechanical process and the state of applied stress on joint affects the fluid flow. Knowledge of these parameters has advantages in prediction of grouting results (grout penetration and intake). Unlike water (Newtonian fluid), stable cement-based grout usually acts as a Bingham fluid. In this study the effect of important joint geometric characteristics on grout intake and penetration depth was simulated hydromechanically using the UDEC code. The gained results show that grout intake and penetration depth increase as joint aperture and normal stiffness increase and in-situ stress decreases. Increase in joint spacing does not have any effect on penetration depth but decreases the grout intake. The effect of joint orientation on grouting process is strongly dependent on in-situ stress state.
AB - Today, grouting is used as an aid in ground improvement in most civil and mining projects. Groutability and grout penetration depth are subjects that are considered in grouting operation. As discontinuities compose the main paths for fluid flow in jointed rock mass, geometric characteristics, such as joint aperture, spacing and orientation, affect the grout flow. On the other hand, fluid flow in joint is a hydromechanical process and the state of applied stress on joint affects the fluid flow. Knowledge of these parameters has advantages in prediction of grouting results (grout penetration and intake). Unlike water (Newtonian fluid), stable cement-based grout usually acts as a Bingham fluid. In this study the effect of important joint geometric characteristics on grout intake and penetration depth was simulated hydromechanically using the UDEC code. The gained results show that grout intake and penetration depth increase as joint aperture and normal stiffness increase and in-situ stress decreases. Increase in joint spacing does not have any effect on penetration depth but decreases the grout intake. The effect of joint orientation on grouting process is strongly dependent on in-situ stress state.
KW - Grout Intake
KW - Grout Penetration Depth
KW - Grout Rheology
KW - Jointed Rock Mass
KW - Numerical Analysis
UR - http://www.scopus.com/inward/record.url?scp=85054968334&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85054968334&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9781617823527
T3 - ISRM International Symposium - 5th Asian Rock Mechanics Symposium 2008, ARMS 2008
SP - 1125
EP - 1133
BT - ISRM International Symposium - 5th Asian Rock Mechanics Symposium 2008, ARMS 2008
A2 - Mahdi, Abbas
A2 - Ghazvinian, Abdolhadi
PB - International Society for Rock Mechanics
ER -