A method for modeling 3D heterogeneous random center points of discontinuities with consideration of weathering
LI Duo1, HUANG Lei1*, XU Kunzhen2, DU Jing2, YE Wu3, ZHANG Weili4, QIU Zewen1
(1. Badong National Observation and Research Station of Geohazards, China University of Geosciences (Wuhan), Wuhan, Hubei 430074, China; 2. ChangJiang Institute of Survey, Planning, Design and Research Co., Ltd., Wuhan, Hubei 430010, China;
3. Zhejiang Haichuan Geology and Mining Technology Co., Ltd, Hangzhou, Zhejiang 310015, China; 4. College of Engineering, China Universityof Geosciences (Wuhan), Wuhan, Hubei 430074, China)
Abstract：Traditional methods for modeling discontinuity networks often struggle to accurately represent the discreteness and heterogeneity induced by weathering in rock masses. To address this issue, this paper proposes an enhanced stochastic discontinuity generation approach. The method integrates discontinuity data obtained from borehole tests and multi-view photogrammetry, quantitatively characterizes the degree of weathering using velocity ratios and a secondary calcite alteration index, and establishes a functional relationship between the degree of weathering and depth. Subsequently, a heterogeneous discontinuity distribution model is developed to improve the generation process of discontinuity center points, allowing for variations in discontinuity distribution characteristics across different weathering degrees and enabling the simulation of heterogeneous discontinuity center points. Comparative results with conventional simulation methods demonstrate that the proposed approach can accurately reproduce the RQD values of rock masses, with the simulated discontinuity volume density and connectivity characteristics showing a reasonable alignment with the discontinuity distribution characteristics of natural rock masses. The proposed method is capable of simulating discontinuity distribution characteristics under varying weathering conditions and can be further applied to numerical simulations and stability evaluations, offering new theoretical support for the engineering stability analysis of complex weathered rock masses.
李 铎1，黄 磊1*，徐昆振2，杜 静2，叶 武3，张伟丽4，邱泽文1. 考虑风化的三维非均质随机结构面中心点模拟方法[J]. 岩石力学与工程学报, 2026, 45(8): 2454-2472.
LI Duo1, HUANG Lei1*, XU Kunzhen2, DU Jing2, YE Wu3, ZHANG Weili4, QIU Zewen1. A method for modeling 3D heterogeneous random center points of discontinuities with consideration of weathering. , 2026, 45(8): 2454-2472.
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