Location
New York, New York
Date
16 Apr 2004, 8:00am - 9:30am
Abstract
The purpose of this research is the determination of maximum rate of advance in one stage of blasting in middle zone of Kaka-Reza water conveyance tunnel. In this zone of tunnel with average 700 meters of overburden, based on geological and geo-mechanical conditions, the supporting system will install immediately after excavation. The methodology of this research is combined of direct strain evaluation technique (DSET), numerical modeling (FLAC 2D) and convergence analysis. The research is done in three stages. At the first stage, the allowable strain in surrounding rock mass of tunnel is calculated based on DSET. At the second stage, allowable convergence is determined by using the value of allowable strain and numerical modeling (FLAC 2D) together. At the third stage of research, with using of convergence analysis and value of allowable convergence, the maximum rate of advance in one stage of blasting is determined and equal to one meter.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2004 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Azizmohammadi, D. and Abbasi, H., "Estimation of Maximum Advance in Kaka-Reza Water Conveyance Tunnel at 700 Meter Depth" (2004). International Conference on Case Histories in Geotechnical Engineering. 6.
https://scholarsmine.mst.edu/icchge/5icchge/session06/6
Estimation of Maximum Advance in Kaka-Reza Water Conveyance Tunnel at 700 Meter Depth
New York, New York
The purpose of this research is the determination of maximum rate of advance in one stage of blasting in middle zone of Kaka-Reza water conveyance tunnel. In this zone of tunnel with average 700 meters of overburden, based on geological and geo-mechanical conditions, the supporting system will install immediately after excavation. The methodology of this research is combined of direct strain evaluation technique (DSET), numerical modeling (FLAC 2D) and convergence analysis. The research is done in three stages. At the first stage, the allowable strain in surrounding rock mass of tunnel is calculated based on DSET. At the second stage, allowable convergence is determined by using the value of allowable strain and numerical modeling (FLAC 2D) together. At the third stage of research, with using of convergence analysis and value of allowable convergence, the maximum rate of advance in one stage of blasting is determined and equal to one meter.
