Finite Element Analysis Model for Determination of In-situ and Mining Induced Stresses as a Function of Two Different Mining Methods Used at Diavik Diamond MineReport as inadecuate




Finite Element Analysis Model for Determination of In-situ and Mining Induced Stresses as a Function of Two Different Mining Methods Used at Diavik Diamond Mine - Download this document for free, or read online. Document in PDF available to download.

Rock Mechanics, Underground Mining, Numerical Modeling, Rockburst, Mining Induced Subsidence, Stope Stability Assessment, Mining Induced Stress

Sepehri, Mohammadali

Supervisor and department: Apel, Derek Civil and Environmental Engineering

Examining committee member and department: Bindiganavile, Vivek Civil and Environmental Engineering Pourrahimian, Yashar Civil and Environmental Engineering Liu, Wei Civil and Environmental Engineering Apel, Derek Civil and Environmental Engineering Galecki, Greg Missouri University of Science and Technology, Mining and Nuclear Engineering

Department: Department of Civil and Environmental Engineering

Specialization: Mining Engineering

Date accepted: 2016-09-15T14:28:13Z

Graduation date: 2016-06:Fall 2016

Degree: Doctor of Philosophy

Degree level: Doctoral

Abstract: One of the essential components of the underground excavation design process, which directly influences the performance and stability of underground constructions, is knowledge of the in-situ and mining-induced stress. Knowing the magnitudes and directions of these stresses can help determine suitable shapes and orientations for tunnels drifts and stopes. In addition, knowing the stress regime in the rock mass can be used to predict the type of rock failure that may occur in the future and identify potential rockbursting zones. The problem statement for this geomechanical research thesis is: -The determination of in-situ and mining-induced stress regimes as a function of two different underground mining methods used at Diavik Diamond Mine- In this research, the main objective is to develop an engineering methodology to estimate the in-situ and mining-induced stress regimes in the host rock and orebody using the finite element analysis method. A case study of Diavik Diamond Mine is used to illustrate the estimation procedure and to implement the proposed methodology. In order to reach the objectives of this research, a full realistic three dimensional finite element model of the case study mine was developed. This finite element analysis model was used to determine the in-situ and mining-induced stress regimes at the case study mine. Some laboratory tests have been conducted on Kimberlite samples to calibrate the material strength properties such as elastic and strength parameters. Finally, the results from the developed finite element model are validated by comparing them to actual field data and site observations. The main contributions of this study include developing and implementing an engineering methodology for estimating in-situ and mining-induced stresses, providing a better understanding of the stress distribution regime in a mine and investigating the role of mining methods on mining-induced stress fields. The outcomes of this research will enhance the body of knowledge regarding the effect of stress ratio the ratio between horizontal to vertical stress and stress heterogeneity regimes on the stability of underground excavations and possible zones of failure.

Language: English

DOI: doi:10.7939-R39882Z2S

Rights: This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for the purpose of private, scholarly or scientific research. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.





Author: Sepehri, Mohammadali

Source: https://era.library.ualberta.ca/


Teaser



Finite Element Analysis Model for Determination of In-situ and Mining Induced Stresses as a Function of Two Different Mining Methods Used at Diavik Diamond Mine by Mohammadali Sepehri A thesis submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Mining Engineering Department of Civil and Environmental Engineering University of Alberta © Mohammadali Sepehri, 2016 ABSTRACT One of the essential components of the underground excavation design process, which directly influences the performance and stability of underground constructions, is knowledge of the in-situ and mining-induced stress.
Knowing the magnitudes and directions of these stresses can help determine suitable shapes and orientations for tunnels (drifts) and stopes.
In addition, knowing the stress regime in the rock mass can be used to predict the type of rock failure that may occur in the future and identify potential rockbursting zones.
The problem statement for this geomechanical research thesis is: “The determination of in-situ and mining-induced stress regimes as a function of two different underground mining methods used at Diavik Diamond Mine” In this research, the main objective is to develop an engineering methodology to estimate the in-situ and mining-induced stress regimes in the host rock and orebody using the finite element analysis method.
A case study of Diavik Diamond Mine is used to illustrate the estimation procedure and to implement the proposed methodology. In order to reach the objectives of this research, a full realistic three dimensional finite element model of the case study mine was developed.
This finite element analysis model was used to determine the in-situ and mining-induced stress regimes at the case study mine.
Some laboratory tests have been conducted on Kimberlite samples to calibrate the material strength properties (such as elastic ii and strength parameters).
Finally, the results from the developed finite element m...





Related documents