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Land Subsidence and its Mitigation

Book Cover for Land Subsidence and its Mitigation

Publication year: 2021
Number of pages: 92
ISBN: 978-1-77470-001-3

Authors:
Giuseppe Gambolati
Professor Emeritus,
School of Engineering,
University of Padova
Padua, Beneto, Italy

Pietro Teatini
Associate Professor,
Department of Civil, Environmental and Architectural Engineering,
University of Padova
Padua, Veneto, Italy

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Book Description

The unsustainable use of land and water resources is expected to increase in the next few decades, causing many problems including increased land subsidence and the associated environmental impacts. Land subsidence is the loss of land elevation and is most prevalent in coastal and highly urbanized areas where groundwater is extracted from confined aquifers. This book outlines the general concepts relevant to land subsidence as well as measurement techniques and locations of the occurrence of major land subsidence throughout the world. The understanding of anthropogenic land subsidence has progressed rapidly in the past century and this book highlights the advances in technology that have allowed for a comprehensive understanding of the topic.

Contents

1 INTRODUCTION

1.1 General Concepts and Principles

1.2 Historical Framework

1.3 Occurrence

1.4 Major Environmental Impacts

2 THEORY OF 1-D SOIL CONSOLIDATION AND AQUIFER RESPONSE TO PUMPING

2.1 Effective Intergranular Stress and Soil Parameters

2.2 Pumping from a Water Table Aquifer

2.3 Pumping from a Single Confined Aquifer

2.4 Pumping from a Multi-Aquifer System

2.5 Delayed Compaction of Aquitards (Confining Beds)

2.6 Time Factor and Compaction Profile

3 MEASURING AND MONITORING SUBSIDENCE AND COMPACTION

3.1 Spirit Leveling

3.2 Global Navigation Satellite Systems

3.3 Insar

3.4 Borehole Extensometer

3.5 Fiber Optics

4 MITIGATION OF LAND SUBSIDENCE BY WATER INJECTION

5 GEOMECHANICAL PROCESSES RELATED TO ANTHROPOGENIC LAND SUBSIDENCE

5.1 Ground Ruptures

5.2 Induced Seismicity

6 EXAMPLE OF ANTHROPOGENIC LAND SUBSIDENCE CALCULATION

7 CONCLUSIONS

8 EXERCISES

Exercise 1
Exercise 2
exercise 3

9 REFERENCES

10 BOXES

Box 1 Justification of Terzaghi’s Principle
Box 2 Visualization of Relationship Between Effective Stress and Void Ratio
Box 3 3-D Poroelasticity Equations

11 EXERCISE SOLUTIONS

Exercise 1 Solution
Exercise 2 Solution
Exercise 3 Solution

ABOUT THE AUTHORS

Interview with Authors