基于PFC的某边坡静态模型研究  

Research on Static Model of a Slope Based on PFC

作　　者：杜宇 DU Yu(Jiangsu Geological Engineering Co.,Ltd.,Nanjing 210000,Jiangsu,China)

机构地区：[1]江苏省地质工程有限公司,江苏南京210000

出　　处：《工程技术研究》2024年第22期48-51,共4页Engineering and Technological Research

摘　　要：文章根据实际边坡的工程特性,通过颗粒流程序(particle flow code, PFC)建立数值模型,采用固结快剪数值试验进行滑带土微观参数的标定,对比可知,在该套微观参数下,数值模型能较好地模拟室内土样的剪切力学性质。对于滑床部分的中风化泥质粉砂岩,通过颗粒流单轴压缩数值试验进行相关的参数标定工作,颗粒流数值模型的结果与室内试验得出的峰值强度和弹性模量结果基本吻合,表明该模型具备有效性,可为利用PFC建立边坡模型的研究提供依据。According to the engineering characteristics of the actual slope,the numerical model is established by Particle Flow Code(PFC),and the microscopic parameters of the slip soil are calibrated by the consolidated quick shear numerical test.The comparison shows that the numerical model can better simulate the shear mechanical properties of indoor soil samples under this set of microscopic parameters.For the moderately weathered argillaceous siltstone in the sliding bed part,the relevant parameter calibration work is carried out through the particle fl ow uniaxial compressive numerical test,and the results of the particle fl ow numerical model are basically consistent with the peak strength and elastic modulus obtained from the indoor test,which shows that the model is effective and can provide basis for the study of using PFC to establish a slope model.

关 键 词：边坡稳定性 PFC 离散单元法 静态模型 

分 类 号：TU411[建筑科学—岩土工程]