广甘高速公路杜家山隧道软弱围岩大变形机理分析  

Mechanism Analysis on Great Deformation of Weak Surrounding Rock of Dujiashan Tunnel of Guang-Gan Expressway

作　　者：王多军 刘俊[2] 赵国法 

机构地区：[1]新疆地矿局第一水文工程地质大队,新疆乌鲁木齐830091 [2]成都理工大学,四川成都610059 [3]浙江省地勘投资有限公司,浙江杭州310007

出　　处：《西部探矿工程》2014年第7期174-176,共3页West-China Exploration Engineering

摘　　要：以广甘高速公路杜家山隧道的工程建设项目为依托,对穿越强震断裂带深埋隧道软弱围岩大变形问题进行研究,以隧道典型断面的监控量测原始数据为基础,采用地质力学分析和数值模拟分析等方法,分析围岩变形破坏力学机理。采用FLAC3D软件对围岩在几种不同支护工况下的变形破坏进行分析,研究穿越强震断裂带深埋隧道软弱围岩变形机理,为类似工程支护提供科学依据。Based on the Dujiashan tunnel engineering construction project of Guang-Gan expressway, the paper discussed the great deformation of weak surrounding rock around deep buried tunnel cutting across earthquake fault zone. According to the original monitoring data of tunnel typical section, adopting the analysis methods of geomechanics and numerical simulation the mechanical mechanism of deformation of surrounding rock is analyzed. The paper analyze the deformation and failure in several different supporting conditions by FLAC3D software, discuss the deformation mechanism of weak surrounding rock around deep buried tunnel cutting across earthquake fault zone, and provide a scientific basis for such engineering supporting.

关 键 词：软弱围岩 力学分析 大变形 数值模拟 

分 类 号：U451.2[建筑科学—桥梁与隧道工程]