一种用于块崩采矿模拟的快速剪切-压缩损伤模型算法
A fast algorithm of the shear-compression damage model for the simulation of block caving
AI总结：
本文提出一种快速算法，用于模拟块崩采矿中的剪切-压缩损伤模型，改进了传统方法，提高了计算效率，并展示了不同损伤定律下的数值测试和模拟结果。
摘要：
对于地下矿山，目前常用的采矿方法是块崩，该方法通过重力破碎和运输大量矿石和废石，但现有损伤模型无法准确模拟采矿对岩体的影响，例如损伤出现在领域底部导致无法恢复矿区沉降。本文分析并实现了Bonnetier等人（2020）提出的用于地下采矿的剪切-压缩损伤模型，提出了一种基于传统梯度损伤模型交替算法（Marigo等人，2016）的快速算法，并证明该算法比传统算法更快。本文在三维中进行了数值测试，并展示了不同损伤定律下的有趣模拟，以产生逼真的损伤行为。
英文摘要：
For underground mine, the current usual technique for ore extraction is block caving, which generates and induces seismic activity in the mine. To understand block caving method is one of the most challenging problems in underground mining. This method relies on gravity to break and transport large amounts of ore and waste. The state of art in damage models is not able to represent the real effect of the mining in the rock mass since for example the damage appears in the bottom of the domain under consideration and with this is not possible recover the subsidence sees in the mine. In this paper we present the analysis and implementation of the shear-compression damage model applied to underground mining proposed in (Bonnetier et al. 2020). We propose a fast algorithm based in the usual alternated algorithm used in gradient damage models (Marigo et al. 2016) and show that this new algorithm is faster than the usual algorithm. We show some numerical tests in 3D and present interested simulations for different damage laws producing realistic damage behavior.
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