Simulating ground-support interaction using advanced numerical methods

使用先进的数值方法模拟地面支持相互作用

• 批准号: 461799-2013
• 负责人: Vlachopoulos, Nicholas
• 金额: $ 1.75万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=542779
• 关键词: Simulating; ground; support; interaction; using

Numerical simulations are widely adopted in the design of several types of rock structures, including tunnels, caverns, rock cuts, and open pit and underground mines. Geomechanica Inc. (the industry partner) develops simulation software and provides consulting services for rock engineering applications. Presently, Geomechanica is focusing on the development of an advanced simulation tool based on a hybrid finite-discrete element method (FEMDEM), which allows a realistic representation of rock mass deformation and fracturing processes. While state-of-the-art from a material behaviour perspective, this modelling software and the associated computational algorithms are not currently consistent with classical rock-support modelling methodologies and such, currently falls short in accurately capturing the application of rock reinforcement techniques, such as rock bolts and cables. An important advance is needed to adapt this simulation process to accurately represent rock-support interaction. Rock reinforcement is often used in civil and mining applications in order to improve the strength and deformational behaviour of a rock mass and represents a key engineering component that every practical rock mechanics model should incorporate. The current modelling approach has already proved to qualitatively and quantitatively simulate rock deformation and failure processes for rock engineering applications. This project proposes to explore different methodologies that could further improve the quality and accuracy of their simulation analysis when modelling reinforced rock masses. The ultimate goal is to obtain a mechanically-based rock-reinforcement interaction model for its hybrid finite-discrete element code and to develop a simulation tool that could be used in practical rock engineering applications such as the design of underground excavations and rock slopes. The outcome of this project will contribute to strengthen a Canadian company's status in simulation-based rock engineering and will strengthen and reinforce Canada's leading role in providing such expertise to clients around the globe.

数值模拟被广泛应用于几种类型的岩石结构的设计，包括隧道，洞穴，岩石切割，露天和地下矿山。地质力学公司(the行业合作伙伴）开发模拟软件，并为岩石工程应用提供咨询服务。目前，Geomechanica正专注于开发一种基于混合有限元离散元法（FEMDEM）的先进模拟工具，该工具可以真实地表示岩体变形和断裂过程。虽然从材料行为的角度来看是最先进的，但是这种建模软件和相关的计算算法目前与经典的岩石支撑建模方法不一致，因此，目前福尔斯在准确地捕获岩石加固技术（例如岩石锚杆和电缆）的应用方面不足。 一个重要的进步是需要适应这个模拟过程，以准确地代表岩石支持相互作用。岩石加固通常用于民用和采矿应用中，以提高岩体的强度和变形行为，并且是每个实际岩石力学模型都应该包含的关键工程组件。目前的模拟方法已经证明定性和定量模拟岩石变形和破坏过程的岩石工程应用。本项目建议探索不同的方法，可以进一步提高模拟分析的质量和准确性时，建模加固岩体。 最终目标是获得一个基于力学的岩石钢筋相互作用模型的混合有限元离散元代码，并开发一个模拟工具，可用于实际的岩石工程应用，如地下开挖和岩石边坡的设计。 该项目的成果将有助于加强加拿大公司在模拟岩石工程方面的地位，并将加强和巩固加拿大在向地球仪客户提供此类专门知识方面的主导作用。