Naturally occurring rock mass have rough surface with irregular geometry and highly unpredictable material properties, making them almost impossible to mathematically represent in computer-aided design (CAD)–based modeling. Simulating the responses of irregular geo-objects under naturally occurring loading conditions is a matter of extensive research. In this context, the contribution of this research is twofold: (i) to propose a 3D reconstruction–based numerical modeling technique that can be used for accurate simulation of irregular geo-objects and (ii) to demonstrate the effectiveness of the proposed modeling approach by testing its accuracy with respect to lab level experiments in simulating strength of intact rocks. Here, image sequences of irregular rocks are used to build 3D reconstructed models that incorporate the objects’ exact geometry. These models are then simulated in numerical modeling software to predict the mechanical behavior of those objects. Validation of the proposed approach was done by comparing the laboratory obtained breaking strengths of the rock samples against their numerical modeling received strengths. It has been shown that the proposed methodology can predict the uniaxial and tensile strength of standard rock samples with 95–99% accuracy. The proposed method is more robust, simplistic, and as-accurate as the existing CAD-based numerical modeling approach, making them readily applicable in modeling the mechanical behavior of geo-objects having irregular surface geometry.

天然岩体具有粗糙的表面、不规则的几何形状和高度不可预测的材料特性，这使得它们几乎不可能在基于计算机辅助设计 (CAD) 的建模中进行数学表示。在自然发生的载荷条件下模拟不规则地质对象的响应是一个广泛研究的问题。在这种情况下，这项研究的贡献是双重的：(i) 提出一种基于 3D 重建的数值建模技术，可用于不规则地质对象的精确模拟；(ii) 证明所提出的建模方法的有效性通过在模拟完整岩石强度的实验室级实验中测试其准确性。在这里，不规则岩石的图像序列用于构建包含物体精确几何形状的 3D 重建模型。然后在数值建模软件中模拟这些模型，以预测这些物体的机械行为。所提出的方法的验证是通过将实验室获得的岩石样品的断裂强度与它们的数值模型获得的强度进行比较来完成的。结果表明，所提出的方法可以以 95-99% 的准确率预测标准岩石样品的单轴和抗拉强度。与现有的基于 CAD 的数值建模方法相比，所提出的方法更加稳健、简单和准确，这使得它们很容易应用于对具有不规则表面几何形状的地质对象的力学行为进行建模。所提出的方法的验证是通过将实验室获得的岩石样品的断裂强度与它们的数值模型获得的强度进行比较来完成的。结果表明，所提出的方法可以以 95-99% 的准确率预测标准岩石样品的单轴和抗拉强度。与现有的基于 CAD 的数值建模方法相比，所提出的方法更加稳健、简单和准确，这使得它们很容易应用于对具有不规则表面几何形状的地质对象的力学行为进行建模。所提出的方法的验证是通过将实验室获得的岩石样品的断裂强度与它们的数值模型获得的强度进行比较来完成的。结果表明，所提出的方法可以以 95-99% 的准确率预测标准岩石样品的单轴和抗拉强度。与现有的基于 CAD 的数值建模方法相比，所提出的方法更加稳健、简单和准确，这使得它们很容易应用于对具有不规则表面几何形状的地质对象的力学行为进行建模。