Introduction

This introduction presents an overview of key concepts discussed in the subsequent chapters of this book. The book provides some relevant global and practical experience and lessons learned to the next generation of global tunneling practitioners, educators, and decision makers involved with rock tunnel projects. It provides recommendations for good practice for the industry, and in some cases, guidelines that are considered to represent good industry practice, including lessons learned from past projects. The book focuses on presents suggestions and recommendations for tunneling practitioners on special topics of laboratory testing, durability of rock and acceptance for unlined water conveyance tunnels, overstressing or deep and long tunnels, risk-based evaluation of excavation methods, contract strategies, and post-construction inspections. Tunneling practitioners should take the opportunity to attend tunneling conferences and seminars as well as courses to increase their knowledge of all of the aspects of tunneling.