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Table of contents
INTRODUCTION
1.1 Problem statement
1.2 Originality
1.3 Thesis objectives
1.4 Contributions
1.5 Methodology
1.5.1 Physical modelling
1.5.2 Numerical modelling
LITERATURE REVIEW
2.1 Backfill uses in mining operations
2.2 Types of mine backfills
2.2.1 Rockfill
2.2.2 Hydraulic fill
2.2.3 Cemented paste fill
2.2.4 Summary of backfill properties
2.3 Design and construction of fill barricades
2.3.1 Types of barricade
2.3.2 Construction of waste rock barricades
2.3.3 Barricade design methods
2.4 In-situ measurements
2.5 Small-scale models of mine stopes
2.6 Numerical simulations for vertical backfilled stope stress evaluation
EXPERIMENTAL TESTS ON A SMALL-SCALE MODEL OF A MINE STOPE TO STUDY THE BEHAVIOUR OF WASTE ROCK BARRICADES DURING BACKFILLING
3.1 Introduction
3.2 Small-Scale Model and Equipment Description
3.3 Material Characteristics
3.3.1 Mine Tailings
3.3.2 Waste Rock Barricade
3.4 Experimental Setup and Program
3.4.1 Setting up the waste rock barricade
3.4.2 CPB Mix Design and Preparation
3.4.3 Program experimental
3.5 Results
3.5.1 Stress State after the Placement of the Backfill in the Small-Scale Model
3.5.2 Stability and Failure Mechanism of the Waste Rock Barricades
3.6 Concluding Remarks
ASSESSMENT OF STRESS STATE IN PASTE BACKFILL DURING PROGRESSIVE BACKFILLING: EXPERIMENTS AND MODELLING
4.1 Introduction
4.2 Experimental & numerical program
4.3 Physical & numerical models
4.3.1 Physical model
4.3.2 Numerical model
4.4 Results
4.5 Conclusion
5.1 Introduction
5.2 Experimental tests
5.3 Results
5.4 Concluding and remarks
6.1 Discussion
6.2 Conclusions
6.3 Recommendations for further study
REFERENCES
