地下水流数值模拟 有限差分法2025|PDF|Epub|mobi|kindle电子书版本百度云盘下载

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Chapter 1 Introduction1

1.1 Brief of Groundwater1

1.1.1 Importance of Groundwater1

1.1.2 Groundwater Resources Management2

1.2 Process of Groundwater Modeling3

Chapter 2 Mathematical Model of Groundwater Flow9

2.1 Basic Concepts9

2.2 Basic Law12

2.2.1 Law of Energy Conservation12

2.2.2 Law of Mass Conservation17

2.3 Basic Equation of Groundwater Flow18

2.3.1 Basic Equation for Steady Incompressible Flow18

2.3.2 Basic Equation for Non-steady Compressible Flow19

2.4 Boundary Conditions21

2.4.1 Boundary Conditions21

2.4.2 Initial Conditions22

2.5 Mathematical Model23

Chapter 3 Numerical Method—Finite-Difference Method24

3.1 Main Ideas and Solving Steps24

3.1.1 Main Ideas of Finite-Difference Method24

3.1.2 Steps of Solving Groundwater Flow Problem by Difference Method24

3.2 Finite Difference Formulae25

3.2.1 Finite Difference Approximation25

3.2.2 Convergence and Stability27

3.3 Steady Flow in Confined Aquifers27

3.3.1 1-D Steady Flow27

3.3.2 2-D Steady Flow34

3.4 Transient Flow in Confined Aquifers37

3.4.1 1-D Transient Flow37

3.4.2 2-D Transient Flow40

3.5 Transient Flow in Unconfined Aquifers44

Chapter 4 Introduction and Tutorial of Visual MODFLOW48

4.1 Introduction of Visual MODFLOW48

4.1.1 Brief Introduction of Visual MODFLOW48

4.1.2 About the Interface48

4.1.3 Main Menu Screen49

4.1.4 Screen Layout49

4.2 Instructions of Example Model50

4.3 Creating and Defining a Flow Model52

4.3.1 Generating a New Model52

4.3.2 Refining the Model Grid55

4.3.3 Adding Wells62

4.3.4 Assigning Model Properties63

4.3.5 Assigning Model Boundary Condition68

4.3.6 Assigning Particles73

4.4 Running Visual MODFLOW74

4.4.1 Run Options for Flow Simulations74

4.4.2 Engines to Run75

4.5 Output Visualization76

4.5.1 Head and Contouring Options76

4.5.2 Velocity Vectors and Contouring Options78

4.5.3 Pathlines and Pathline Options80

Chapter 5 Numerical Simulation of Impervious Wall Construction of Xizhang Basin Groundwater Reservoir in Taiyuan83

5.1 Model Objectives83

5.2 Overviews of the Xizhang Basin83

5.2.1 Regional Geography83

5.2.2 Regional Geological and Hydrogeological Conditions85

5.2.3 Social and Economic Situation86

5.3 Conditions for the Construction of Underground Reservoir86

5.4 Groundwater Flow Model for Xizhang Basin87

5.4.1 Hydrogeological Conceptual Model87

5.4.2 Establishment Groundwater Model88

5.4.3 Identification and Calibration of the Model92

5.5 Influences of Impervious Wall on Groundwater Flow98

5.5.1 Input Data for Wall Boundary98

5.5.2 Simulation Impervious Wall by Wall Boundary98

5.5.3 Correction of Impervious Wall Parameters98

5.5.4 Effects of Impervious Wall Construction on the Simulation of Groundwater Flow99

Chapter 6 Application of MODPATH to Classify Protection Area in Tumen106

6.1 Model Objectives106

6.2 Overviews of Water Source Situation in Tumen106

6.2.1 Geography106

6.2.2 Regional Geological and Hydrogeological Conditions108

6.3 Groundwater Flow Model for Tumen Water Source Area109

6.3.1 Hydrogeological Conceptual Model109

6.3.2 Mathematical Model for the Groundwater Flow109

6.3.3 Model Validation111

6.4 Delineation of Water Source Protection Zones by MODPATH113

6.4.1 Numerical Simulation Method113

6.4.2 Procedure of Protection Zones Delineation114

6.4.3 Results of Protection Zones Delineation114

References119