FLAC3D在大荒沟隧道最小净距确定中的应用  

Application of FLAC30 in Determination of Minimum Clerance of Dahuanggou Tunnel

作　　者：张向东[1] 张俊鹏[1] 万明富[2] 

机构地区：[1]辽宁工程技术大学土木建筑工程学院,阜新123000 [2]辽宁省交通勘测设计院,沈阳110005

出　　处：《北方交通》2008年第10期77-80,共4页Northern Communications

摘　　要：FLAC软件可广泛地应用于岩土工程的设计与计算,以鹤大高速公路桓仁新开岭至丹东古城子段大荒沟隧道为工程背景,应用FLAC3D软件对大荒沟隧道的最小净距进行了模拟与确定。通过对Ⅲ、Ⅳ、Ⅴ级围岩下不同净距的浅埋隧道进行数值模拟,得出了不同围岩级别下的小净距隧道在施工过程中围岩的变形规律和变性规律之间的相似性。通过对中间岩柱的变形与塑性区破坏规律分析,得出了最小净距的工程设计参考值。为小净距隧道的发展和施工设计提供了较确切的参考数据和理论依据。FLAC software is enabled to be applied to design and computation of geotechnical engineering. The paper simulates and determines the minimum clearance of Dahuanggou tunnel by FLAC30 software as background with Dahuanggou tunnel engineering at section of Huairenxinkailing - Dandongguchengzi on He - Da Freeway. Numerical sumulafion of shallowly embedded tunnel of Ⅲ, Ⅳand Ⅴ traded wall rock with different clearances has obtained the deformation laws of wall rock and the simmilarity between the deformation laws in construction of tunnel with small clearances.

关 键 词：FLAC软件 小净距隧道 围岩级别 数值模拟 

分 类 号：U452.2[建筑科学—桥梁与隧道工程]