| ABBREVIATIONS | 第1-10页 |
| ABSTRACT | 第10-13页 |
| 摘要 | 第13-15页 |
| CHAPTER 1 INTRODUCTION | 第15-36页 |
| ·Background and significance of study | 第15-17页 |
| ·Review of Literature | 第17-25页 |
| ·Factors affecting soil failure patterns | 第18-20页 |
| ·Consistency limits (plastic limit and liquid limit) | 第20-21页 |
| ·Verification of soil bin tests in the field conditions | 第21页 |
| ·Numerical methods | 第21-22页 |
| ·Soil structure created after different failure patterns | 第22-24页 |
| ·Optimum moisture content for seedbed | 第24-25页 |
| ·Objectives of study | 第25页 |
| ·Thesis structure | 第25-26页 |
| REFERENCES | 第26-36页 |
| CHAPTER 2 MATERIALS AND METHODS | 第36-57页 |
| ·Laboratory experiments | 第36-43页 |
| ·Soil preparation | 第36-38页 |
| ·Soil cutting test rig for laboratory experiments | 第38-40页 |
| ·Soil cutting test procedure | 第40-41页 |
| ·Mass fractal dimensions (Dm) & specific surface area (Aspecific).27 | 第41-42页 |
| ·Moisture contents near the sticky limit of soil | 第42-43页 |
| ·Optimum moisture content for seedbed | 第43页 |
| ·Field experiments | 第43-46页 |
| ·Preparation of test sites | 第44页 |
| ·Soil cutting test rig for the field experiments | 第44-45页 |
| ·Soil cutting test procedure | 第45-46页 |
| ·Numerical methods | 第46-49页 |
| ·Modeling and meshing | 第46-47页 |
| ·Boundary conditions and loading | 第47-48页 |
| ·Soil and material properties | 第48-49页 |
| ·Comparison of soil bin, field and simulated failure patterns | 第49页 |
| ·Soil physical and mechanical properties | 第49-54页 |
| ·Statistical analysis | 第54页 |
| REFERENCES | 第54-57页 |
| CHAPTER 3 SOIL FAILURE PATTERNS AND DRAFT AS INFLUENCED BY CONSISTENCY LIMITS:AN EVALUATION OF THE REMOLDED SOIL CUTTING TEST | 第57-75页 |
| ·Introduction | 第57-58页 |
| ·Results and Discussion | 第58-70页 |
| ·Soil failure patterns at different consistency limits & the sticky point.44 | 第58-66页 |
| ·Draft at different consistency limits and the sticky point | 第66-70页 |
| ·Conclusions | 第70页 |
| REFERENCES | 第70-75页 |
| CHAPTER 4 SIMULATION AND COMPARISON OF SOIL BIN AND FIELDTESTING OF SOIL FAILURE PATTERNS | 第75-96页 |
| ·Introduction | 第75-78页 |
| ·Results and Discussion | 第78-88页 |
| ·The physical and mechanical properties of soil | 第78-84页 |
| ·Comparison of soil bin and field tests | 第84-87页 |
| ·Comparison of simulated failure patterns with soil bin and the field!..73 | 第87-88页 |
| ·Conclusions | 第88-89页 |
| REFERENCES | 第89-96页 |
| CHAPTER 5 SOIL STRUCTURES PRODUCED AFTER DIFFERENT FAILUREPATTERNS:IMPLICATIONS FOR SOIL TILLING | 第96-117页 |
| ·Introduction | 第96-98页 |
| ·Materials and Methods | 第98页 |
| ·Soil cutting test procedure | 第98页 |
| ·Results and Discussion | 第98-106页 |
| ·Soil failure patterns at different consistency limits | 第98-99页 |
| ·Soil structure created after different failure patterns | 第99-106页 |
| ·Conclusions | 第106-107页 |
| REFERENCES | 第107-117页 |
| CHAPTER 6 SOIL FRAGMENTATION PRODUCED BY SOIL CUTTING ASINFLUENCED BY VARIOUS MOISTURE CONTENTS NEAR SOIL'S STICKYLIMIT | 第117-131页 |
| ·INTRODUCTION | 第117-118页 |
| ·RESULTS AND DISCUSSION | 第118-126页 |
| ·Soil fragmentation produced 汹 various moisture contents nearsticky limit of soil (W_SL) | 第119-121页 |
| ·Mass fractal Dimensions (Dm) | 第119-120页 |
| ·Specific surface area (Aspecific) | 第120-121页 |
| ·Optimum moisture content for seedbed | 第121-126页 |
| ·Conclusions | 第126页 |
| REFERENCES | 第126-131页 |
| CHAPTER 7 CONCLUSIONS AND SUGGESTIONS | 第131-135页 |
| ·CONCLUSIONS | 第131-132页 |
| ·SUGGESTIONS FOR THE FUTURE STUDIES | 第132-135页 |
| RESEARCH PAPERS | 第135-136页 |
| ACKNOWLEDGEMENT | 第136页 |
