论文标题
剪切压缩损伤模型，用于模拟地下采矿通过块洞穴
A shear-compression damage model for the simulation of underground mining by block caving
论文作者
论文摘要
块洞是一种用于智利铜矿中的矿石提取技术。它利用重力来减轻岩石的破裂，并促进从矿石和废物的混合物中提取的。为了基于Pham和Marigo的梯度损害模型（2010），我们研究了3个变异模型，以数值和更好地理解其对矿山环境的影响，并更好地理解其对矿山环境的影响。在这些模型中，损伤标准可能表现出对应力张量的球形和偏离部分的各向异性依赖性。我们报告了令人满意地表示应力场预期的模拟，以障碍物的洞穴操作中的预期演变。
Block caving is an ore extraction technique used in the copper mines of Chile. It uses gravity to ease the breaking of rocks, and to facilitate the extraction from the mine of the resulting mixture of ore and waste. To simulate this extraction process numerically and better understand its impact on the mine environment, we study 3 variational models for damage, based on the gradient damage model of Pham and Marigo (2010). In these models, the damage criterion may exhibit an anisotropic dependence on the spherical and deviatoric parts of the stress tensor. We report simulations that satisfactorily represent the expected evolution of the stress field in a block caving operation.
