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Chapter 1 Introduction
1£®1 Background
1£®2 Literature Review
1£®2£®1 Shaft lining failure
1£®2£®2 Treatment methods for shaft lining failure
1£®3 Problem Statement
1£®4 Scope and Objective
1£®5 Outline

Chapter 2 Failure Mechanism of Shaft Lining in Eastern Chinese Coal Mines
2£®1 Introduction
2£®2 Overview of Target Coal Mine and Condition of Shaft Lining Failure
2£®3 Numerical Analysis on Shaft Lining Failure and Aquifer
2£®3£®1 Numerical analysis model
2£®3£®2 Strength factor
2£®3£®3 Results and discussion
2£®4 Effect of Strata Thicknesses on Stability of Shaft lining
2£®4£®1 Numerical analysis model
2£®4£®2 Results and discussion
2£®5 Summary

Chapter 3 Development of a New Method and Its Application for Reinforcement of Shaft Lining
3£®1 Introduction
3£®2 Underground Continuous Impervious Curtain
3£®3 Development of Construction Technique
3£®3£®1 Introduction
3£®3£®2 Performance of CCC
3£®4 Application of CCC to Construction of UCIC
3£®4£®1 Field application
3£®4£®2 Available case analysis
3£®5 Concept of UCIC Construction
3£®6 Summary

Chapter 4 Analysis of Underground Continuous Impervious Curtain for Shaft Lining Treatment
4£®1 Introduction
4£®2 Effect of UCIC Connectionless with Shaft Lining
4£®2£®1 Numerical analysis model
4£®2£®2 Results and discussion
4£®3 Effect of UCIC Next to Shaft Lining
4£®3£®1 Numerical analysis model
4£®3£®2 Results and discussion
4£®4 Influence of Ranges and Materials on Effect of UCIC
4£®4£®1 Model for numerical simulation
4£®4£®2 Results and analyses
4£®5 Effect of UCIC during Dynamic Process of Pore Water Pressure
4£®5£®1 Introduction
4£®5£®2 Fundamental assumption
4£®5£®3 Influence of aquifer drainage
4£®5£®4 Effect of UCIC
4£®6 Summary

Chapter 5 Influence of Coal Extraction Operation on Shaft Lining and Treatment by Using Underground Continuous Impervious Curtain
5£®1 Introduction
5£®2 Numerical Analysis Model
5£®3 Results and Discussion
5£®3£®1 Effect of the vertical distance between aquifer and mining panel
5£®3£®2 Effect of the distance between shaft and the mining panel
5£®3£®3 Measures for preventing the effect of extraction of mining panel on the stability of shaft lining
5£®3£®4 Additional treatment of shaft lining
5£®4 Summary

Chapter 6 Conclusions And Recommendations
6£®1 Conclusions
6£®2 Recommendations
Reference Documentation