Geotechnical research for resource development

资源开发岩土工程研究

• 批准号: 239054-2006
• 负责人: Phillips, Ryan
• 金额: $ 1.02万
• 依托单位: Centre for Cold Ocean Resources Engineering
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=332159
• 关键词: Geotechnical; research; resource; development

The development of Canada's hydrocarbon resources is proceeding both onshore and offshore. The advancement of both marine geotechnical and onshore geomechanical research will aid the development of marginally economic fields and will improve the cost effectiveness of all fields. This application assists this advancement through 8 ongoing and 8 new projects. A common link in most of these research projects is experimental modelling in the large C-CORE centrifuge facility. First the behaviour of suction caissons in soft clay is being understood by isolating the contributions of soil resistance between the inside and outside faces. The second project will continue the investigation of the length to diameter ratio effect and repeated (cyclic) load reversals on shaft capacities of close-ended piles in sand. The third is evaluating of alternative wellhead installation concepts for marginal subsea developments. The fourth study continues to consider permafrost-structure interaction due to thaw settlement and frost heave, which will be required for pipelines now being reconsidered from northern regions to N American markets. The continued development of a Canadian national geotechnical earthquake modelling capability has permitted projects on the initiation of submarine slope instability and the mitigation of damage to waterfront slopes. This new capability allows new earthquake projects on the mitigation of stratified slopes continuing COSTA-Canada, slope deformation mechanisms and pile response in variable soils. Two new projects will examine submarine slope stability in gassy soils under tidal fluctations and shallow seafloor stability due to wave action. Oblique loads effects on pipe soil interaction, soil influence on buried pipe structural response and the influence of sand production on oil recovery rates from deep production wells are the other 3 new projects.

加拿大碳氢化合物资源的开发正在陆上和海上进行。海洋岩土工程和陆上岩土力学研究的进展将有助于开发边缘经济领域，并将提高所有领域的成本效益。该应用程序通过8个正在进行的项目和8个新项目来帮助这一进步。在大多数这些研究项目中，一个共同的环节是在大型C芯离心机设施中进行实验建模。首先，通过分离内外表面之间的土壤阻力的作用来了解软粘土中的吸力沉箱的行为。第二个项目将继续研究长径比和反复(循环)荷载反转对砂土中封闭式桩基承载力的影响。第三是评估边缘海底开发的替代井口安装概念。第四项研究继续考虑由于融化沉降和冻胀造成的永久冻土-结构相互作用，这将是目前正在重新考虑的从北部地区到北美市场的管道所必需的。加拿大国家岩土地震模拟能力的持续发展使得启动海底斜坡不稳定和减轻对海滨斜坡的破坏的项目成为可能。这一新的能力允许新的地震项目继续哥斯达黎加-加拿大关于层状斜坡的缓解、斜坡变形机制和在可变土壤中的桩响应。两个新的项目将研究潮汐波动下含气土壤中的海底斜坡稳定性和波浪作用下的浅海海底稳定性。斜向荷载对管土相互作用的影响、土壤对埋地管道结构响应的影响以及深井出砂对采油速度的影响是另外3个新项目。