| 近接溶洞条件下隧道施工掌子面变形破坏特征数值分析 |
| |
| 引用本文： | 李志义,白明洲,许兆义,赵西民,雷军,王成亮.近接溶洞条件下隧道施工掌子面变形破坏特征数值分析[J].中国铁道科学,2011,32(4). |
| |
| 作者姓名： | 李志义 白明洲 许兆义 赵西民 雷军 王成亮 |
| |
| 作者单位： | 1. 北京交通大学土木建筑工程学院,北京,100044
2. 中铁十二局集团有限公司二公司,山西太原,030032 |
| |
| 基金项目： | 国家自然科学基金资助项目(41072256); 教育部培育基金资助项目(708010) |
| |
| 摘 要： | 以宜万铁路齐岳山隧道工程为背景,以危险地段的岩溶地质条件为基础,应用三维有限元分析方法,在隧道掌子面前方的溶洞规模大于、等于和小于隧道掌子面规模的3种情况下,模拟分析不同岩体厚度、不同岩溶水压力时隧道掌子面的变形破坏规律。研究结果表明:当溶洞直径大于或等于隧道直径时,相同岩溶水压力作用下掌子面变形值相近,当溶洞直径小于隧道直径时,掌子面变形量小;掌子面变形量最大值出现在掌子面中心位置;当掌子面与岩溶洞壁之间的距离大于2.0 m时,掌子面变形量增加并不明显;在溶洞内无水压力条件下,掌子面岩体塑性区范围很小,但随着水压力的增大,塑性区的范围逐步增大。
|
| 关 键 词： | 岩溶区 岩体厚度 岩溶水压力 隧道直径 掌子面 变形破坏 隧道施工 |
Numerical Analysis on the Features of Deformation and Damage of Tunnel Face in the Course of Construction under the Condition of Coming Close to Karst Cave |
| |
| LI Zhiyi,BAI Mingzhou,XU Zhaoyi,ZHAO Ximin,LEI Jun,WANG Chengliang.Numerical Analysis on the Features of Deformation and Damage of Tunnel Face in the Course of Construction under the Condition of Coming Close to Karst Cave[J].China Railway Science,2011,32(4). |
| |
| Authors: | LI Zhiyi BAI Mingzhou XU Zhaoyi ZHAO Ximin LEI Jun WANG Chengliang |
| |
| Institution: | LI Zhiyi1,BAI Mingzhou1,XU Zhaoyi1,ZHAO Ximin2,LEI Jun2,WANG Chengliang1(1.School of Civil Engineering and Architecture,Beijing Jiaotong University,Beijing 100044,China,2.The 2nd Engineering Limited Company,China Railway 12th Bureau Group Limited Company,Taiyuan Shanxi 030024,China) |
| |
| Abstract: | Qiyueshan tunnel engineering of Yichang-Wanzhou Railway was taken as the research background.Based on the karst geological conditions in hazardous section,3D finite element analysis method was applied to simulate and analyze the deformation and damage law of the tunnel face with different rock mass thickness and different karst water pressure under three conditions,namely,the scale of the karst cave in front of the tunnel face is greater than,equal to and less than the scale of the tunnel face.The results i... |
| |
| Keywords: | Karst area Rock mass thickness Karst water pressure Tunnel diameter Tunnel face Deformation and damage Tunnel construction |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
