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A damage mechanical model applied to analysis of mechanical properties of jointed rock masses

机译：损伤力学模型在节理岩体力学特性分析中的应用

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摘要

The mechanical properties of jointed rock masses significantly affect the long-term behaviour and safety of engineering projects. In this paper, a damage mechanical theory is adopted to deal with some sets of joints distributed in rock masses. Based on the geometrical distribution of joints, a damage model which considers the influence of normal vector and area density of joints is used to describe the discontinuities. This damage model is programmed in finite difference software FLAC(3D), and an example of jointed rock masses is used to verify the validity of the model, which shows that this model can well reflect the influence of joint angle and joint density. Finally, we use this model to predict the displacements and damage zones in the rock masses surrounding an underground cavern. The simulation results show a good agreement with field measurements.
机译：节理岩体的力学性能显着影响工程项目的长期行为和安全性。本文采用损伤力学理论来处理分布在岩体中的一些节理。基于节点的几何分布，考虑了法向矢量和节点的面积密度的损伤模型用于描述不连续点。该损伤模型在有限差分软件FLAC（3D）中编程，并以节理岩体为例验证了该模型的有效性，表明该模型能够很好地反映节理角和节理密度的影响。最后，我们使用该模型预测地下洞穴周围岩体的位移和破坏区域。仿真结果与现场测量结果吻合良好。

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