| 江帆,熊裕林,韩瑞祥,辛怡安.某超大断面高铁隧道出口段失稳分析与加固处置措施[J].安徽建筑大学学报,2013,21(6):25-30 |
| 某超大断面高铁隧道出口段失稳分析与加固处置措施 |
| Analysis of Instability and Controlling Measurements for Super-Large Cross Section of High Speed Railway Tunnel Portal |
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| DOI：10.11921/j.issn.2095-8382.20130606 |
| 中文关键词: 隧道洞口段 失稳 滑坡一隧道作用机理 处置措施 监控量测 |
| 英文关键词: tunnel portal section instability mechanism of interaction between landslide and tunnel~controlling measurements~ monitoring measurement |
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| 中文摘要: |
| 隧道的进出口边坡稳定性问题常是隧道工程建设中的关键问题，施工中容易发生仰坡坍塌、衬砌变形等不良地质现象。以某超大断面高铁隧道出口段发生滑坡为工程实践，首先列出该隧道出口段不良地质现象变形特性，然后分析了该滑坡一隧道相互作用机理以及该失稳现象的成因，根据现场实测数据判断该失稳处于加速变形阶段，应采取紧急加固措施；通过截水排水工程、明洞与明暗交界处加固、边仰坡加强防护措施保障了隧道安全施工，现场实测数据说明该加固方案思路是正确的，为类似工程实践提供借鉴。 |
| 英文摘要: |
| The stability of slop problem on the import and export of the tunnel often is the key issue during the construction, many accidents, including front slope collapse and crack on shield lining, etc. often take place. Take a large cross-section high--speed rail at the exit of the tunnel as an exam- ple, at first, it lists some unfavorable geological characteristics. Then the mechanism of interaction between landslide and tunnel is analyzed as well as the mechanism of instability phenomena. Based on the in-situ monitoring data, the the instability slope is in the acceleration deformation stage and urgent reinforcement measures should be taken. Through some reinforcement measurements and then the field data, the remedy measures are effective and good results are achieved. The practice provides a reference for similar engineering practice. |
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