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

岩体中含有不同尺度的不连续面，如裂缝、节理、剪切面和断层，形成离散的裂隙网络（DFN）。 这些裂隙网络对岩石破碎、开挖稳定性、流体流动和污染物输运具有显著影响。该研究计划的动机是将现实的DFN结合到先进的数值模拟模型中，以研究采矿工程结构（如隧道，采场和露天边坡）的开挖响应，从而降低岩石工程风险，提高采矿安全性和生产率。 该项目的目标是：（1）开展研究，以提高加拿大工程师和地质科学家MoFrac工具的能力，从而有效地进行逼真的三维DFN建模;（2）演示如何使用结合逼真DFN模型的高级合成岩体建模方法在断裂岩体中进行高级岩石工程;（3）通过以下方式向行业转让知识：（一）在MoFrac工具中部署新的算法和模块，并向加拿大研究人员提供新功能增强的工具，随后向整个行业提供;（二）培训新的HQP和行业合作伙伴的人员;及（iii）在具影响力的同行评审期刊及国际会议上发表研究成果。采用的方法是实验观测，现场监测和数值模拟相结合的应用。 该研究成果将有助于加拿大的核废料管理和采矿，使工程师能够在破碎岩体中进行工程设计分析。这具有显著的潜力，可以显著提高地面和地下工程项目的安全性、生产率和盈利能力。

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.