Geotechnical research for resource development

加拿大碳氢化合物资源的开发正在陆上和海上进行。海洋岩土工程和陆地地质力学研究的进步将有助于边际经济领域的发展，并将提高所有领域的成本效益。这个应用程序通过8个正在进行的和8个新的项目来帮助这个进步。大多数这些研究项目的一个共同环节是在大型C-CORE离心机设施中进行实验建模。首先，通过隔离内部和外部表面之间的土壤阻力的贡献来理解软粘土中吸力沉箱的行为。第二个项目将继续研究长径比效应和重复（循环）荷载反转对砂土中封闭式桩的井筒承载力的影响。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引起的永久冻土-结构相互作用，这将是现在重新考虑从北部地区到北美市场的管道所需要的。加拿大国家地质技术地震模拟能力的不断发展，使有关海底斜坡不稳定的开始和减轻滨水斜坡损害的项目得以开展。这种新的能力允许新的地震项目继续哥斯达黎加-加拿大分层边坡的缓解，边坡变形机制和可变土壤中的桩响应。两个新项目将研究潮汐波动下的海底斜坡稳定性和波浪作用下的浅层海底稳定性。另外3个新项目为斜荷载对管土相互作用的影响、土对埋地管结构响应的影响以及出砂对深井采收率的影响。

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.