CAJ | 학술논문

分析颗粒流模型中宏细观参数的关系,可为细观参数的匹配提供依据。以平行黏结模型作为基本模型,以单轴压缩数值试验作为宏观参数测试方法,对数值试验进行正交设计,采用多因素方差分析研究细观参数对宏观参数的影响。结果表明：弹性模量E主要受Ec(E-c)影响；泊松比γ主要受kn/ks(k-n/k-s)影响；单轴抗压强度σn 主要受平行黏结强度参数σcn ,τcs ,SD/Mean影响；μ对宏观强度参数没有显著影响,而对宏观变形参数具有一定影响；RA 只对泊松比γ存在一定影响。在此基础上,建立了针对岩石单轴压缩数值试验的细观参数匹配方法。
분석과립류모형중굉세관삼수적관계,가위세관삼수적필배제공의거。이평행점결모형작위기본모형,이단축압축수치시험작위굉관삼수측시방법,대수치시험진행정교설계,채용다인소방차분석연구세관삼수대굉관삼수적영향。결과표명：탄성모량E주요수Ec(E-c)영향；박송비γ주요수kn/ks(k-n/k-s)영향；단축항압강도σn 주요수평행점결강도삼수σcn ,τcs ,SD/Mean영향；μ대굉관강도삼수몰유현저영향,이대굉관변형삼수구유일정영향；RA 지대박송비γ존재일정영향。재차기출상,건립료침대암석단축압축수치시험적세관삼수필배방법。
The analysis of the relationship between macro-parameters and micro-parameters in PFC2D model is very useful to the calibration of micro-parameters in application. The parallel bond model is selected as the basic model and the uniaxial com-pression numerical test is used to obtain the macro-parameters. An orthogonal design is adopted to design the numerical tests and multi-factor analysis of variance is used to analyze the influence of micro-parameters on macro-parameters. The results show that the elasticity modulus is mainly affected by Ec ( E-c ) , the Poisson's ratio is mainly affected by kn/ks ( k-n/k-s ); uniaxial compressive strength is mainly affected byσcn ,τcs and SD/Mean;μhas little influence on macroscopic strength parameters, but influences the macroscopic deformation parameters;and RA only influences Poisson's ratio. On this basis, the matching solution of micro-parameters for rock uniaxial compression numerical test is established.