Microtunneling and Horizontal Drilling Recommendations [Hardcover]

This book includes recommendations prepared by members of the French Society for Trenchless Technology (FSTT), based on their recent national multi-year project. Comprehensive guidelines, techniques and theories in the areas of both microtunneling and horizontal drilling are given, encompassing the fields of application for each method, what investigations should be undertaken, which machines and equipment should be used, how the work should be managed and potential problems that may arise.
The recommendations, the analytical methods used and their verification with laboratory and field data should not only improve the rate of success of trenchless projects, but will also be of great value to engineers in other countries, who can compare the results with their own findings and assess the international state of the art.

Preface 17
André COLSON

Introduction 19
Michel MERMET

PART I. MICROTUNNELING 23

Chapter 1. Introduction to Guidelines: Subject and Fields of Application 25

1.1. General introduction of “trenchless technology” 25

1.2. History and characteristics of microtunneling methods 27

1.3. Purpose of the guidelines 28

Chapter 2. Techniques and Theory of Operation for the Installation of Pipes by Microtunneling 31

2.1. General information 31

2.2. Different functions of a boring machine 32

2.2.1. Mechanized excavation of the soil 32

2.2.1.1. Blasting the soil 32

2.2.1.2. Confinement of the face 33

2.2.2. Discharge of excavated earth (or mucking) 34

2.2.2.1. Hydraulic mucking 34

2.2.2.2. Mucking with a screw conveyor 35

2.2.2.3. Pneumatic mucking 36

2.2.3. Guidance and trajectol“j