Synthetic Rock Mass (SRM) modelling Incorporating Realistic 3D Discrete Fracture Network (DFN) for Advanced Rock Engineering

合成岩体 (SRM) 建模结合真实 3D 离散断裂网络 (DFN) 进行高级岩石工程

• 批准号: 560390-2020
• 负责人: Cai, Ming
• 金额: $ 8.3万
• 依托单位: Laurentian University of Sudbury
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=721765
• 关键词: Synthetic; Rock; Mass; SRM; modelling

Rock masses contain discontinuities at different scales, such as cracks, joints, shears and faults, forming discrete fracture networks (DFNs). These fracture networks have significant effects on rock fragmentation, excavation stability, fluid flow, and contaminant transport. The motivation of this research program is to incorporate realistic DFN in advanced numerical simulation models to investigate the excavation response of mining engineering structures such as tunnels, stopes, and open-pit slopes so as to reduce rock engineering risk and improve mining safety and productivity. The objectives of the project are: (1) to conduct research to improve the capabilities of the MoFrac tool for engineers and geoscientists in Canada to conduct realistic 3D DFN modelling effectively; (2) to demonstrate how advanced rock engineering in fractured rock masses can be conducted using the advanced synthetic rock mass modelling approach that incorporates realistic DFN models; (3) to transfer knowledge to the industry by means of (i) deploying the new algorithms and modules in the MoFrac tool and making the new-feature-enhanced tool available to Canadian researchers and subsequently to industry at large; (ii) training of new HQPs and personnel from the industry partners; and (iii) publishing the research results in high impact peer-reviewed journals and international conferences. The approach to be adopted is a combined application of experimental observation, field monitoring, and numerical modeling. The outcome of the research will contribute to nuclear waste management and mining in Canada to allow engineers to have an advanced tool to conduct engineering design analysis in fractured rock masses. This has the distinct potential to materially improve the safety, productivity, and profitability of surface and underground engineering projects.

岩体包含不同尺度的不连续性，例如裂缝、节理、剪切和断层，形成离散裂缝网络（DFN）。 这些裂缝网络对岩石破碎、开挖稳定性、流体流动和污染物迁移具有显着影响。该研究项目的动机是将真实的DFN融入先进的数值模拟模型中，以研究隧道、采场和露天矿边坡等采矿工程结构的开挖响应，以降低岩石工程风险并提高采矿安全和生产率。 该项目的目标是：(1) 开展研究，提高 MoFrac 工具的能力，使加拿大的工程师和地球科学家能够有效地进行真实的 3D DFN 建模； (2) 展示如何使用结合实际 DFN 模型的先进合成岩体建模方法在裂隙岩体中进行先进的岩石工程； (3) 通过以下方式向行业转移知识：(i) 在 MoFrac 工具中部署新算法和模块，并向加拿大研究人员以及随后整个行业提供新功能增强工具； (ii) 培训新的总部和行业合作伙伴的人员； (iii) 在高影响力的同行评审期刊和国际会议上发表研究成果。所采用的方法是实验观察、现场监测和数值模拟的结合应用。 该研究成果将有助于加拿大的核废料管理和采矿，使工程师能够拥有先进的工具在裂隙岩体中进行工程设计分析。这具有显着提高地面和地下工程项目的安全性、生产率和盈利能力的巨大潜力。