التفاصيل البيبلوغرافية
| العنوان: |
公路软岩隧道变截面段合理施工技术研究. (Chinese) |
| المؤلفون: |
李威, 向龙, 张靓, 韦纯祎 |
| المصدر: |
Transportation Science & Technolgy; Dec2024, Vol. 50 Issue 6, p98-103, 6p |
| Abstract (Chinese): |
在我国交通建设中不可避免会遇到大量的软岩隧道, 隧道正常段至紧急停车带设置变截 面段并根据围岩地质条件进行工法转换将有效确保安全, 质量, 经济要求。以四川西部某在建高 速公路软岩隧道为例, 利用 FLAC 有限差分软件对施工过程进行模拟, 结合工法转换及围岩变形 规律, 设计合理施工技术, 结果表明, 软岩隧道从正常段过渡至紧急停车带时, 截面的急剧扩大导 致围岩位移影响范围及幅值均明显大于正常断面: 采用CRD和CD法施工可有效控制由断面突然 扩大而引起的对围岩变形的不利影响;采用CD法+双层初期支护三台阶预留核心土法时围岩的 累计变形量与变形速率最终均趋于稳定。 [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |