煤矿安全2024，Vol.55Issue(1)：42-49,8.DOI:10.13347/j.cnki.mkaq.20221467
含孔洞多裂隙复合岩层裂纹扩展和分形特性模拟研究
Simulation of cracks propagation and fractal characteristics of composite rock strata with holes and fractures
摘要
Abstract
RFPA2D was used to simulate the crack propagation,failure mode,and fractal characteristics of composite strata with pre-fabricated cracks and holes under the uniaxial compression test.The crack propagation process was analyzed when the crack inclina-tion angle and rock inclination angle changed.And it was concluded that:when the rock inclination angle is 0° and the crack inclina-tion angle changes,the cracks are classified into X-type cracks and Y-type cracks.When the crack inclination angle is 0° and the rock inclination angle changes,the failure modes of the model specimens are divided into the through-cut failure mode of soft rock and the failure mode along the soft rock.The variation law of fractal dimension of cracks in the composite rock stratum with holes calculated by Matlab is the same as that of the compressive strength of the model specimen,and the fitting between fractal dimen-sion and compressive strength has a significant linear relationship.关键词
岩石裂纹/单轴压缩/复合岩层/分形维数/RFPA2DKey words
rock crack/uniaxial compression/composite rock/fractal dimension/RFPA2D分类
矿业与冶金引用本文复制引用
汪学清,赵云猛,冯莹,汪壮壮,李永超,陈博,董泽,吴帅军..含孔洞多裂隙复合岩层裂纹扩展和分形特性模拟研究[J].煤矿安全,2024,55(1):42-49,8.基金项目
深海矿产资源开发利用技术国家重点实验室开放课题资助项目(2021-HYSDDYB-001) （2021-HYSDDYB-001）
