Abstract
Three-dimensional geological modeling is an important means to transparently study the three-dimensional geological spatial structure and change trend of major complex rock mass projects, and plays a very important role in the decision-making and mining of major projects. Today’s modeling methods rely too much on the required data, the process is cumbersome and the time is relatively long. Therefore, based on the above discussion, this article uses a complete open source code geological modeling method here, based on the implicit potential field interpolation method of the open source GemPy package, using this interpolation algorithm can be relatively simple to build a complex full three-dimensional geological model, Including fault network, fault surface interaction, unconformity and dome structure. The article describes in detail how to construct the faults and strata of the 3D geological model, and how to add topographic maps, and use the generated model as input data, use MOOSE to voxelize it, and export the required data, use NMM Perform stability analysis. This method has the advantages of simple operation, fast modeling speed, and visual interactive operation. The establishment of a three-dimensional geological model of the fractured rock mass was very effective, laying a solid foundation for the subsequent stability analysis.
Highlights
In recent years, major national rock mass projects represented by the Sichuan-Tibet Railway and the West-East Power Transmission Hydropower Project have been carried out successively
In the process of rock mining, the establishment of a three-dimensional geological model is of great significance to rock stability analysis and rock mining planning
Based on the GemPy open source geological modeling program, this paper develops a new model data management and export platform, and combines it with the manifold element based on the voxel crack model to realize the whole process analysis from geological modeling to mechanical calculation
Summary
Major national rock mass projects represented by the Sichuan-Tibet Railway and the West-East Power Transmission Hydropower Project have been carried out successively. Pang Qinggang et al.[3] proposed a three-dimensional stratum modeling technology that can deal with non-uniform data based on multi-scale CSRBFs interpolation method, which can carry out high-precision and rapid reconstruction of stratum surface models for non-uniform data; Zhu Liangfeng et al.[4] Using borehole data as the source data for stratum modeling, a simple, practical, fast and robust 3D modeling method was realized; Yang Wenhuan et al.[5] A 3D stratum model construction method based on a generalized triangular prism model of a tetrahedral grid, Carried out very effective modeling and calculation for mine geological analysis; Guo Jiateng et al.[6] introduced radial basis implicit function and proposed an automatic ore body modeling method based on implicit surface This method has a high degree of automation, a smooth model and There is no topology error, which provides a new solution for 3D software development.
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