Numerical analysis of the failure process of soil-rock mixtures through computed tomography and PFC3D models
Yang Ju
Huafei Sun
Mingxu Xing
Xiaofei Wang
Jiangtao Zheng
摘要：Soil-rock mixture (SRM) is a unique type of geomaterial characterized by a heterogeneous composition and a complicated structure.It is intractable for the continuum-based soil and rock mechanics theories to accurately characterize and predict the SRM's mechanical properties.This study reports a novel numerical method incorporating microfocus computed tomography and PFC3D codes to probe the deformation and failure processes of SRM.The three-dimensional (3D) PFC models that represent the SRM's complex structures were built.By simulating the entire failure process in PFC3D,the SRM's strength,elastic modulus and crack growth were obtained.The influence of rock ratios on the SRM's strength,deformation and failure processes,as well as its internal mesoscale mechanism,were analyzed.By comparing simulation results with experimental data,it was verified that the 3D PFC models were in good agreement with SRM's real structure and the SRM's compression process,deformation and failure patterns;its intrinsic mesomechanism can be effectively analyzed based on such 3D PFC models.
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资助基金：The authors gratefully acknowledge the financial support from the State Key Research Development Program of China(Grant 2016YFC0600705)the National Natural Science Foundation of China(Grant )the National Natural Science Foundation of China(51674251)the National Natural Science Foundation of China(51727807)the National Natural Science Foundation of China(51374213)the National Natural Science Foundation for Distinguished Young Scholars of China(Grant 51125017)the Fund for Creative Research and Development Group Program of Jiangsu Province(Grant 2014-27)the Priority Academic Program Development of Jiangsu Higher Education Institutions(Grant PAPD2014)an open project sponsored by the State Key Laboratory for Geomechanics and Deep Underground Engineering (Grant SKLGDUE K1318)
论文发表日期：2018-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：16( 126-141 )
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