Rainfall Infiltration in Unsaturated Soil Slope Failure

ISBN-13: 9789811997365 / Angielski / Miękka / 2023 / 140 str.

Lizhou Wu; Jianting Zhou

Opis

This is an open access book. The aim of this book is to provide a thorough grounding in rainfall-induced landslides from three aspects: the coupling effect of hydraulic and mechanic; the analytical, numerical, and physical simulation methods, and the controlling factors underlying the problem of rainfall-induced landslides. The improved numerical methods, nonlinear, and linear iterative methods which can be used to address the related unsaturated infiltration problems are also presented. This book is an essential reading for researchers and graduate students who are interested in rainfall infiltration, landslides, slope stability, and geohazards in fields of civil engineering, engineering geology, and earth science. The book is written to guide professional engineers and practitioners in slope engineering and geohazard management. This book can enhance their understanding of rainfall-induced landslides, help them analyze a specific problem, prevent landslides, and design engineering slopes according to the local soil and climate conditions.

Spis treści

1 Background

1.1 Physical Properties of Unsaturated Infiltration

1.2 Governing Equation of Water Infiltration       

1.3 Unsaturated Soil Slope Stability         

2 Analytical Solution to Unsaturated Infiltration

2.1 Introduction

2.2 Analytical Solutions for Unsaturated Seepage             

2.3 Boundary Effect

2.4 Conclusions

3 Physical Simulation of Rainfall Infiltration into Unsaturated Slopes

3.1 Introduction

3.2 Model Testing of Rainfall Infiltration Soil Column

3.3 Laboratory Simulation of Rainfall-Induced Loess Slope Failure

3.4 Conclusions

4 Numerical Solution to Infiltration Equation

4.1 Introduction

4.2 Numerical Solution  37

4.3 An Improved Method for Non-Uniform Spatial Grid

4.4 Application of Chebyshev Spectral Method to Richards’ Equation

4.5 Conclusions

5 Improved Linear and Nonlinear Iterative Methods for Rainfall Infiltration Simulation

5.1 Introduction

5.2 Classical Linear Steady Iterative Method

5.3 Improved Jacobi Iterative Method with Two-Side Equilibration

5.4 A Chebyshev Semi-Iterative Method with Preconditioner

5.5 Application of Improved SOR Method in Unsaturated Flow

5.6 Improved Gauss-Seidel Method

5.7 Nonlinear Iterative Methods and Improvements

5.8 Conclusions

6 Slope Stability Analysis Based on Analytical and Numerical Solution

6.1 Introduction

6.2 Numerical Application of Unsaturated Soil Slope Stability under Rainfall

6.3 Hydromechanical Coupling of Unsaturated Soil Slope Stability

6.4 Conclusions

O autorze

 
Professor Lizhou Wu is a full professor at Chongqing Jiaotong University, Chongqing, China. He received his Ph.D. degree in Geology Engineering from Chengdu University of Technology. His research focuses on geotechnical engineering and engineering geology, particularly soil mechanics for unsaturated slopes, rainfall-induced landslides and rock fracture.

Professor Jianting Zhou is a Changjiang Scholar at Chongqing Jiaotong University, Chongqing, China.