煤矿安全2025，Vol.56Issue(4)：155-165,11.DOI:10.13347/j.cnki.mkaq.20241454
含裂隙结构煤体的三维数值模型构建方法研究
Study on construction method of three-dimensional numerical model of coal with fracture structure
摘要
Abstract
There are a large number of fracture structures with different forms in coal and rock mass,which indirectly affect and de-termine the mechanical properties of coal and rock mass.It is necessary to accurately grasp fracture structure and reconstruct 3D nu-merical model to stucly mechanical properties of coal and rock mass.The threshold segmentation of coal sample slices is carried out by using the combined methods of CT scanning,rock mechanics experiment,image processing technology and RFPA3D-CT to ex-tract the three-dimensional fracture structure of coal sample,establish a three-dimensional numerical model that is basically consistent with the internal fracture structure and mechanical properties of the studied coal sample,and embed RFPA3D-CT for uniaxial loading numer-ical simulation analysis.The results show that:the three-dimensional numerical model of coal sample can reflect the complex intern-al micro-fracture structure well.The uniaxial compression test and numerical simulation test have strong similarities in failure morphology and stress-strain curves,and the average error of uniaxial compressive strength and elastic modulus is only 1.56%and 2.22%respectively.Finally,the correctness of the construction method of three-dimensional numerical model of coal sample is verified.关键词
CT扫描/图像处理/煤体裂隙结构/细观参数/三维数值模型Key words
CT scanning/image processing/Coal fissure structure/mesoscopic parameters/three-dimensional numerical model分类
矿业与冶金引用本文复制引用
张子鑫,余洋,余建东,牛增杰,郎丁,张耀..含裂隙结构煤体的三维数值模型构建方法研究[J].煤矿安全,2025,56(4):155-165,11.基金项目
西安科技大学优秀青年科学基金资助项目(6310222012) （6310222012）
陕西省教育厅服务地方专项研究计划资助项目(22JE018) （22JE018）
