Introduction to Geotechnical Processes

About this book

The study of the solid part of the earth on which structures are built is an essential part of the training of a civil engineer. Geotechnical processes such as drilling, pumping and injection techniques enhance the viability of many construction processes by improving ground conditions.

An Introduction to Geotechnical Processes covers the elements of ground treatment and improvement, from the control of groundwater, drilling and grouting to ground anchors and electro-chemical hardening. The ground investigation necessary for the process, the likely improvement in strength of treated ground, and testing methods are also highlighted.

Contents

Contents. Symbols and Abbreviations Used. Introduction. 1. Ground Investigation 1.1 General Requirements 1.2 Stability Parameters 1.3 Groundwater Investigation 1.4 Rock Investigations 1.5 Ancillary Investigations 1.6 Dealing with Problematic Soils 1.7 Typical Plant and Equipment for Ground Investigation 2. Decision-Making Charts 2.1 Groundwater Control - Removal 2.2 Groundwater Control - Exclusion 2.3 Ground Improvement 1 2.4 Ground Improvement 2 3. Groundwater Control - General Considerations 3.1 Ground Stability 3.2 Estimates of Inflow 3.3 Design of Groundwater Lowering Systems 3.4 Design of Groundwater Exclusion Systems 3.5 Monitoring of Groundwater Control 3.6 Impact of Groundwater on Other Processes 4. Groundwater Control - Removal Methods 4.1 Gravity Drainage 4.2 Sump Pumping and Shallow Wells 4.3 Wellpoints 4.4 Deep Wells 4.5 Eductors 4.6 Horizontal 'Wellpoints' 4.7 Relief Wells 4.8 Recharge Wells 4.9 Electro-Osmosis 5. Groundwater Control - Exclusion Methods 5.1 Grout Curtains 5.2 Bentonite Slurries 5.3 Slurry Trench Cut-Offs 5.4 Diaphragm Walls 5.5 Sheet Pile Walls 5.6 Bored Pile Walls 5.7 Artificial Ground Freezing 5.8 Groundwater in Tunnels 5.9 Thin Membrane Walls 6. Ground Improvement 6.1 Vertical Drainage 6.2 Pre-Loading 6.3 Vibro-Compaction 6.4 Vibro-Replacement - Stone Columns 6.5 Dynamic Compaction 7. Ground Improvement By Grouting 7.1 Permeation Grouting 7.2 Compaction Grouting 7.3 Hydro-Fracture 7.4 Compensation Grouting 7.5 Rock Grouting 7.6 Jet Grouting 7.7 Other Mix-in-Place Methods 8. Cavity Stabilisation 8.1 Old Mine Workings 8.2 Mine Shafts 8.3 Solution Cavities 9. Ground Anchors 9.1 Tie-Backs for Retaining Walls 9.2 Holding-Down Anchors 9.3 Rock and Cliff Stabilisation 9.4 Soil Nailing 9.5 Underground Support 10. Pile Grouting 10.1 Piles for Off-Shore Structures 10.2 Improving Pile Performance 11. Plant for Geotechnical Processes 11.1 Drilling 11.2 Grout Mixing 11.3 Grout Pumping. Glossary. Selected Bibliography. References. Index.

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