洛德参数对硐室围岩Drucker-Prager解的影响  

Influence of Lode Parameters on Drucker-Prager Solution of Cavern Surrounding Rock

作　　者：彭瑞[1] 孟祥瑞[1] 赵光明[1] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南市232001

出　　处：《矿业研究与开发》2014年第6期44-47,94,共5页Mining Research and Development

基　　金：国家自然科学基金项目(51174005;51074005;51134012);教育部"新世纪优秀人才支持计划"项目(NCET-08-0819);教育部科学技术研究重点项目(KJ2011A085)

摘　　要：利用洛德参数研究中间主应力对Drucker-Prager准则推导出的硐室围岩塑性解的影响。研究表明,随着洛德参数的增大,塑性区范围会先减小后增大,表现为区间性;并与Mohr-Coulomb准则塑性解进行对比,结果显示塑性解随着支护阻力增大而减小;Flac3D软件模拟Drucker-Prager模型和Mohr-Coulomb模型的塑性应力大小和巷道周边位移,验证了分析结论的准确性。Using the Lode parameters,the influence of intermediate principal stress was studied for the plastic zone solutions of cavern surrounding rock that were derived by Drucker-Prager criterion.The research shows that the plastic zone would decrease firstly and then increase with Lode parameters＇ increasing,which performs interval features.Comparing with plastic solution of Mohr-Coulomb criterion,the plastic solution value decreases with supporting resistance＇s increasing.The plastic stress and drift surrounding rock displacement on analysis from Drucker-Prager model and Mohr-Coulomb model were simulated by FLAC3 Dsoftware to verify the accuracy of analysis conclusion.

关 键 词：洛德参数 Drucker-Prager准则解 硐室围岩 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]