廖一蕾, 赖允谨, 张子新. 2008: 某黄土地区隧道塌方回填方案比较研究. 工程地质学报, 16(S1): 307-312.
    引用本文: 廖一蕾, 赖允谨, 张子新. 2008: 某黄土地区隧道塌方回填方案比较研究. 工程地质学报, 16(S1): 307-312.
    LIAO Yilei, LAI Yunjin, ZHANG Zixin. 2008: STUDY ON BACKFILL SCHEMES COMPARISON OF A SURFACE CAVITY CAUSED BY TUNNEL COLLAPSE IN LOESS DISTRICT. JOURNAL OF ENGINEERING GEOLOGY, 16(S1): 307-312.
    Citation: LIAO Yilei, LAI Yunjin, ZHANG Zixin. 2008: STUDY ON BACKFILL SCHEMES COMPARISON OF A SURFACE CAVITY CAUSED BY TUNNEL COLLAPSE IN LOESS DISTRICT. JOURNAL OF ENGINEERING GEOLOGY, 16(S1): 307-312.

    某黄土地区隧道塌方回填方案比较研究

    STUDY ON BACKFILL SCHEMES COMPARISON OF A SURFACE CAVITY CAUSED BY TUNNEL COLLAPSE IN LOESS DISTRICT

    • 摘要: 某黄土地区隧道由于暴雨导致出口塌方,塌方段地表出现柱状塌坑。对于塌坑的回填提出了先加固后填方和先放坡开挖后填方两种不同的方案。本文从隧道受力和造价两个角度对两种方案进行了比选,其中隧道受力采用大型有限元程序ANSYS分别就荷载-结构法和地层-结构法计算而得。经比较分析,采用方案一进行塌坑填方,隧道结构受力相对合理且造价较低。

       

      Abstract: A tunnel in loess district collapsed due to heavy rain, resulting in a cylindrical cavity on surface. Two schemes, reinforce-and-cover and cut-and-cover, have been brought forward for backfill, and compared in tunnel structure moment and construction cost to decide which one should be adopted. Tunnel structure moment can be calculated by ANSYS, using load-structure method and strata-structure method, respectively. It comes to conclusion that tunnel structure would be safer and construction more economical if employed the first scheme to refill the cavity.

       

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