裂隙岩体本构模型及数值模拟研究与应用  

Research and Application of the Constitutive Model and Numerical Simulation of Fractured Rock Mass

作　　者：张兰翔[1] 查文华[1] 王昆[1] 

机构地区：[1]安徽理工大学能源与安全学院

出　　处：《金属矿山》2013年第12期48-51,共4页Metal Mine

摘　　要：基于莫尔-库仑理论模型,结合裂隙岩体损伤力学方法,研究岩体中裂隙的出现、扩展从而实现岩体局部破坏的本构关系及演化方程,同时在FLAC3D提供的二次开发程序接口基础上,采用VC++程序语言实现了自定义本构模型,并将其编译成动态链接文件进行加载与调用。将此本构模型应用于一实际巷道的开挖围岩稳定分析中,得到塑性区、位移场、应力等值线分布与莫尔-库仑模型计算结果分布相符合,从而进一步验证了模型的适用性和可靠性,这为工程的实际应用提供了一种方法。Combined with the damage mechanics method of fractured rock mass,and based on the Mohr-Coulomb theory model,the emergence and expansion of rock fractures are investigated in order to achieve the constitutive relations and evolution equations of partial rock destruction. Based on the two secondary development program interface of FLAC3D,VC ＋ ＋ programming language is used to realize the user-defined constitutive model which is compiled into a dynamic link file for loading and transferring. Finally,this constitutive model is applied to stability analysis for a roadway surrounding rock in the excavation,obtaining that the distribution rules of calculated plastic zone,displacement field,stress contours of distribution are accord with Mohr-Coulomb criterion,which validates the applicability and reliability of the model further. This provides a method for engineering application.

关 键 词：裂隙岩体 损伤演化 巷道围岩 本构模型 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]