A 3D Multi-scale geology modeling method for tunnel engineering risk assessment

作者：Xiong, Ziming^*; Guo, Jiateng; Xia, Yuanpu; Lu, Hao; Wang, Mingyang; Shi, Shaoshuai

来源：Tunnelling and Underground Space Technology, 2018, 73: 71-81.

DOI：10.1016/j.tust.2017.12.003

• Tunnel engineering
• 3D geological modeling
• Multi-scale
• Risk assessment
• Hermite radial basis function
• Monte-Carlo

A method for 3D multi-scale geology modeling is proposed for assessing tunnel engineering risk. Risk assessments have varying requirements at various different construction stages, therefore the proposed model can be modified for different scales. The regional scale 3D geological model, based on regional field surveys of geological boundary and attitude, is proposed for conducting preliminary evaluations with limited geological sampling data and the Hermite radial basis HRBF). The project scale geological model, based on updating and refining the regional scale model with dense drilling and geological prediction data, couples the geological body model for surrounding rock and the tunnel model. This project scale model is appropriate for performing pre-evaluations of tunnel construction. Once construction has begun, continuous rock structure surface information from the newly exposed tunnel face is incorporated into the outcrop scale geological model. It is based on a Monte-Carlo algorithm for conducting dynamic evaluations during construction. These modeling methods are applied to a case study, railway tunnel engineering of the Yuelongmen tunnel in China.

• 出版日期2018-3
• 单位南京理工大学; 山东大学; 东北大学