| 侧部溶洞对隧道围岩稳定性影响分析 |
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| 引用本文： | 张锋,靳晓光,贾学明.侧部溶洞对隧道围岩稳定性影响分析[J].公路交通技术,2011(4):101-104,108. |
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| 作者姓名： | 张锋 靳晓光 贾学明 |
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| 作者单位： | 重庆大学土木工程学院;重庆大学山地城镇建设与新技术教育部重点实验室;招商局重庆交通科研设计研究院有限公司; |
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| 摘 要： | 以纳溪高速公路叙岭关隧道为背景,以方形溶洞为例,运用三维有限元方法分析隧道侧部溶洞对隧道围岩稳定性的影响.研究结果表明:随着隧道的不断推进,右拱脚附近竖向位移和最大主应力有较明显的增加；拱顶、拱底围岩变形有朝溶洞方向位移的趋势；侧部溶洞对围岩的影响范围大约是2倍隧道洞径,对1倍隧道洞径内的围岩及侧部溶洞应及时处理.隧道...
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| 关 键 词： | 隧道 侧部溶洞 影响范围 支护时机 |
Analysis for Influences of Side Caverns on Stability of Tunnel Wall Rock |
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| ZHANG Feng,JIN Xiaoguang,JIA Xueming.Analysis for Influences of Side Caverns on Stability of Tunnel Wall Rock[J].Technology of Highway and Transport,2011(4):101-104,108. |
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| Authors: | ZHANG Feng JIN Xiaoguang JIA Xueming |
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| Institution: | ZHANG Feng1,2,JIN Xiaoguang1,JIA Xueming3 |
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| Abstract: | With background of Naxi Expressway Xunlingguan tunnel,with instance of quadrate cave,the author adopts 3D finite element to analyze effect to stability of tunnel wall rock by tunnel side karst cave.Results of the study show that along with the development of the tunnel,vertical displacement and maximum principal stress increases significantly near right arch feet;Arch vault and arch bottom wall rock have horizontal displacement,towards the karst cave;Influenced range of wall rock is about 2 times the diamet... |
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| Keywords: | Tunnel Side karst cave Influenced range Supporting time |
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