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    本書的主要研究內容包括：降雨入滲土坡理論和穩定性評價方法、非飽和土滲流變形耦合理論、基于滲流變形耦合的邊坡可靠度分析、裂隙土坡和碎石土坡的降雨入滲和穩定性分析、基于隨機場的非均質土坡風險評價、預測模型的概率校準。本書的讀者對象主要是巖土力學與巖土工程、工程地質領域的科研人員、工程人員以及高等院校相關專業的師生，也可供土建、水利水電、冶金、公路、鐵路等領域從事工程地質或巖土力學研究的科技人員參考。我國設有巖土工程和工程地質專業的科研單位和大專院校有上千所，滑坡和邊坡工程是相關單位工程咨詢和科研的主要方向之一，預計社會需求較大。

　　Several excellent books cover a wide spectrum of unsaturated soil mechanics and its applications to slope engineering， such as " Unsaturated Soil Mechanics in Engineering Practice" by Delwyn Fredlund， Harianto Rahardjo and Murray Fredlund published by Wiley and "llillslope Hydrology and Stability" by Ning Lu and Jonathan Godt published by Cambridge University Press. The new book "Rainfall Induced Soil Slope Failure： Stability Analysis and Probabilistic Assessment" by Lulu Zhang， Jinhui Li， Xu Li， Jie Zhang and Hong Zhu is a new addition which focuses on rain-induced slope failures from a soil mechanics approach. The authors of the book are all very active young researchers in the field of study.
　　The new book concisely presents the fundamental mechanics behind rain- induced soil slope failures： infiltration and evapotranspiration in soil slopes， slope stability under rainfall infiltration， and hydro-mechanical coupled deformation. The concepts and analyses are presented clearly from the first principle with a strong physical sense. Some advanced topics， such as plastic analysis of hydro-mechanical coupled seepage and deformation in unsaturated soil slopes， are approached in a plain manner with hand-on tutorials， which is ideal for graduate students. The analysis of the stability of slopes with cracks is an excellent addition-practitioners are aware of the vital importance of cracks but few have the knowhow to quantify cracks on slopes and their effects on slope stability. The book overall provides the fundamental knowledge to deal with climate-slope interactions and resulting slope failures.
　　The new book also systematically presents the uncertainties involved in the characterization and analysis of rain-induced slope failures. Methods for reliability analysis of slopes under rainfall， including probability concepts， identification of sources of uncertainty， stochastic finite element method and probabilistic model calibration， are introduced. This is a unique feature of the book-it is perhaps the only book that addresses both the mechanics and
　　uncertainties behind rain-induced slope failures.
　　I believe that Rainfall Induced Soil Slope Failure： Stability Analysis and Probabilistic Assessment will serve as an excellent reference for educators， university graduate students， researchers and practitioners.

    上海交通大學，船舶海洋與建筑工程學院土木工程系，副教授，中組部首屆“青年拔尖人才支持計劃”入選者。2000 年本科畢業于清華大學水利水電工程系水工專業，2005 年博士畢業于香港科技大學土木與環境工程系。主要從事滑坡和邊坡工程、巖土工程概率可靠度方面的研究。

Chapter 1 Introduction
1．1 Slope Failures Under Rainfall and Failure Mechanisms
1．2 Recent Advances and Hot Research Topics
1．3 Outline of The Book
References


Chapter 2 Infiltration and Seepage Analysis in Soil Slopes
2．1 Introduction
2．2 Estimation of Infiltration Rate Based on Conceptual Model
2．2．1 Mechanism of Infiltration in Soils
2．2．2 Green-ampt Model for Infiltration of Constant Rainfall on A Level Ground
2．2．3 Infiltration of Constant Rainfall on A Sloping Ground
2．2．4 Infiltration of Time-varied Rainfall on A Sloping Ground
2．3 Seepage Analysis in Unsaturated Soil Slopes Based on Physical Governing Equation
2．3．1 Governing Equation of Water Flow in Unsaturated Soil
2．3．2 Hydraulic Properties of Unsaturated Soils
2．3．2．1 Soil-water characteristic curve
2．3．2．2 Coefficient of permeability function
2．4 Analytical Solutions of the Richards Equation
2．4．1 Analytical Solution of One-dimensional Infiltration Under Constant Rainfall
2．4．2 Analytical Solution of One-dimensional Infiltration Under Time-varied Rainfall
2．4．3 Effect of Soil Properties， Boundary Conditions， and Initial Conditions
2．4．3．1 Saturated permeability ks
2．4．3．2 Desaturation coefficient asy
2．4．3．3 E/i[ective water content 鑣-鑢
2．4．3．4 Antecedent surJhce JTux q0
2．4．3．5 RainJall intensity q1
2．4．3．6 Thickness of soil layer L
2．5 Numerical Analysis of the Richards Equation
2．5．1 Standard Formulations
2．5．2 Spatial Approximation and Time Discretization
2．5．3 Nonlinear Solution Methods
2．5．4 Numerical Oscillation
2．5．5 Rainfall Infiltration Boundary Condition
2．6 Typical Pore-water Pressure Profiles Under Rainfall Condition
2．7 Soil Conditions Under Which Matric Suction Can be Maintained
2．7．1 Pore-water Pressure Profiles Under Steady-state Conditions
2．7．2 Pore-water Pressure Profiles Under Transient Seepage Conditions
2．7．2．1 Effect of air-entry value on the wetting front
2．7．2．2 Effect of the saturated coefficient of permeability
2．7．2．3 Influence of water storage coefficient
2．7．2．4 Effect of the groundwater boundary conditions
2．7．3 Geotechnical Engineering Implications
References


Chapter 3 Stability Analysis of Slope Under Rainfall Infiltration Based on Limit Equilibrium
3．1 Introduction
3．2 Infinite-slope Stability Analysis Based on One-dimensional Infiltration Profile
3．2．1 General Equation of Factor of Safety for Infinite Unsaturated Slope
3．2．2 Simplified Scenarios of Various Seepage Conditions
3．2．2．1 Steady-state condition with seepage parallel slope surface
3．2．2．2 Transient condition with different shapes of wetting front
3．2．3 Slope Stability Based on Estimated Nonlinear Unsaturated Shear Strength
3．2．3．1 Fredlund et al．（1996） nonlinear shear strength equation
3．2．3．2 Vanapalli et al．（1996） nonlinear shear strength equation
3．2．3．3 Vilar （2006） nonlinear shear strength equation
3．2．3．4 Khalili and Khabbaz （1998） nonlinear shear strength equation
……


Chapter 4 Coupled Hydromechanical Analysis for Unsaturated Soil Slope
Chapter 5 Stability of Soil Slope with Cracks
Chapter 6 Stability Analysis of Colluvium Slopes Upon A Rainstorm
Chapter 7 Reliability Analysis of Slope Under Rainfall
Chapter 8 Probabilistic Assessment of Randomly Heterogeneous Soil Slopes
Chapter 9 Probabilistic Model Calibration


Index