【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。更多还原

【Abstract】 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 sumulation 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.更多还原