摘要
基于颗粒流平台,选择Flatjoint接触模型作为岩石模拟的基本模型,用单轴压缩和巴西劈裂数值试验测试岩石宏观参数,对数值试验进行正交设计,采用多因素方差分析和回归分析研究宏细观参数之间的关系。在此基础上,提出了基于岩石单轴压缩和巴西劈裂数值试验的细观参数匹配方法。以灰岩的室内试验为基础,对灰岩细观参数进行了标定,实现了灰岩单轴压缩和巴西劈裂的颗粒流模拟,模拟结果与试验结果相接近,验证了本文方法的有效性。
The Flat-joint bonded-part icle material was selected as the basic model for rock simulation. The macro-parameters of rock were calculated through numerical uniaxial compression test and Brazilian splittin g test in PFC. Orthogonal design was adopted to conduct numerical tests and multifactor analysis of variance and regression analy-sis were utilized to analyze the relat ionship between macro-parameters and mesoparameters. On this basis,method of matching the meso-parameters for numerical uniaxial compression test and Brazi liansplit ting test was proposed. According to laboratory tests of limes tone, the meso-parameters of limestone were obtained and the PFC simulat ion of uniaxial compression and Brazi lian splittin g tests of limestone were conducted. The simulat ion results are close to the laboratory test results,which validated the effectiveness of the proposed method.
出处
《长江科学院院报》
CSCD
北大核心
2016年第9期60-65,共6页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金项目(41272377
41302278)
