| ACKNOWLEDGEMENTS | 第3-4页 |
| 摘要 | 第4-5页 |
| ABSTRACT | 第5页 |
| Chapter 1 INTRODUCTION | 第15-18页 |
| 1.1 Background information | 第15-17页 |
| 1.2 Aim of thesis study | 第17页 |
| 1.3 Outline of thesis | 第17-18页 |
| Chapter 2. NICKEL ORE MINING AND ENVIRONMENTAL FRAME | 第18-38页 |
| 2.1. Nickel, a mineral with important stakes | 第18-23页 |
| 2.1.1. Common nickel uses and applications | 第18-19页 |
| 2.1.2. Worldwide nickel economy and stakes | 第19-21页 |
| 2.1.3. Importance of nickel mining in New-Caledonia | 第21-23页 |
| 2.2. Nickel exploitation from a geological point of view | 第23-29页 |
| 2.2.1. Description of nickel deposits | 第23-26页 |
| 2.2.2. Nickel exploitation in New-Caledonia | 第26-29页 |
| 2.3. Environmental impacts of mining activities and regulations | 第29-34页 |
| 2.3.1. Dealing with the environment in New-Caledonia | 第29-33页 |
| 2.3.2. Legal texts and environmental regulations | 第33-34页 |
| 2.4. Nickel mining and environmental management in the SLN | 第34-36页 |
| 2.4.1. Brief summary of nickel exploitation in the SLN | 第34-35页 |
| 2.4.2. The SLN environmental involvement | 第35-36页 |
| 2.5. Summary | 第36-38页 |
| Chapter 3. PLATFORMS FOR HELICOPTER-BORNE DRILLINGPROSPECTING | 第38-70页 |
| 3.1.Description of helicopter-borne drilling campaigns | 第38-44页 |
| 3.1.1. Before the drilling campaign: succession of prospecting stages | 第39-40页 |
| 3.1.2. Evolution sequence of a drilling campaign | 第40-44页 |
| 3.2. History and evolution of platform realization until 2015 | 第44-45页 |
| 3.3. 2010, a year of trials and procedural implementation | 第45-55页 |
| 3.3.1. Global platform state analysis in the Southern Province | 第46-47页 |
| 3.3.2. Earthwork trials to improve stability | 第47-50页 |
| 3.3.3. Revegetation trials | 第50-55页 |
| 3.4. Realization of a drilling platform: new 2010 procedure | 第55-59页 |
| 3.4.1. Procedure in 2010: Preliminary drilling implantation | 第55-56页 |
| 3.4.2. Procedure in 2010: Land clearing | 第56页 |
| 3.4.3. Procedure in 2010: Support structure | 第56-58页 |
| 3.4.4. Procedure in 2010: Topsoil management | 第58页 |
| 3.4.5. Procedure in 2010: Earthwork | 第58-59页 |
| 3.4.6. Procedure in 2010: Remediation | 第59页 |
| 3.5. Environmental impacts from platform realization | 第59-69页 |
| 3.5.1. Environmental impacts due to drilling platform implementation | 第60-63页 |
| 3.5.2. Opening helicopter-borne drilling prospecting | 第63-65页 |
| 3.5.3. Helicopter use and environmental limitations | 第65-66页 |
| 3.5.4. Declaration and mending of environmental incidents | 第66-69页 |
| 3.6. Summary | 第69-70页 |
| Chapter 4. STATE ANALYSIS AND PERSPECTIVES IN 2015 | 第70-94页 |
| 4.1. State analysis of current practices during helicopter-bornedrilling campaigns | 第70-78页 |
| 4.1.1. Onsite observing of platform realization stages and identificationof environmental difficulties or unconformities | 第70-75页 |
| 4.1.2. Perspectives and strategies to reduce the environmental impact | 第75-78页 |
| 4.2.Procedural compliance and immediate improvements on sites | 第78-82页 |
| 4.2.1. Supervision to ensure compliance to procedures | 第78-80页 |
| 4.2.2. Particularity of fascines: validation required | 第80页 |
| 4.2.3. Environmental audits and official visits | 第80-82页 |
| 4.3. Focuses to design new trials | 第82-84页 |
| 4.3.1. Reducing instability and erosion | 第82-83页 |
| 4.3.2. Improving revegetation | 第83-84页 |
| 4.4. A selection of new trials to implement the procedure | 第84-87页 |
| 4.4.1. Earthwork | 第84-85页 |
| 4.4.2. Remediation | 第85-86页 |
| 4.4.3. Visual impact | 第86页 |
| 4.4.4. Trial description through field worksheets | 第86-87页 |
| 4.5. Real-scale testing during ongoing campaigns | 第87-93页 |
| 4.5.1. First trial campaign axed on remediation | 第87-92页 |
| 4.5.2. A sequel to testing | 第92-93页 |
| 4.6. Summary | 第93-94页 |
| Chapter 5. ENSUING IMPROVEMENTS AND COMMUNICATION | 第94-106页 |
| 5.1. Completion of platform realization procedure | 第94-101页 |
| 5.1.1. Using assessments and test results to update the procedure | 第94-100页 |
| 5.1.2. Onsite compliance and implementation of new instructions | 第100-101页 |
| 5.2. Perspectives for improvement sequels | 第101-103页 |
| 5.2.1. Further ideas for trials and studies | 第101-102页 |
| 5.2.2. Improving sharing and data availability | 第102-103页 |
| 5.3. Environmental management and external communication | 第103-105页 |
| 5.4. Summary | 第105-106页 |
| Chapter 6. CONCLUSIONS AND SUGGESTIONS | 第106-108页 |
| 6.1. Conclusions | 第106-107页 |
| 6.2. Suggestions | 第107-108页 |
| References | 第108-118页 |
| Appendix A | 第118-121页 |
| Resume | 第121页 |
