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首页> 外文期刊>KSCE journal of civil engineering >Seepage Behavior of Drainage Zoning in a Concrete Faced Gravel-fill Dam via Centrifuge and Numerical Modeling
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Seepage Behavior of Drainage Zoning in a Concrete Faced Gravel-fill Dam via Centrifuge and Numerical Modeling

机译：混凝土面板砾石坝排水分区渗流特性的离心和数值模拟

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摘要

Sandy gravel materials have recently been utilized in place of crushed rock materials as the main rockfill materials in Concrete Faced Rockfill Dams (CRFD) to address geological and environmental problems. In this paper, an experimental scheme for centrifuge modeling was developed to simulate a Concrete Faced Gravel-fill Dam (CFGD). The dam considered in this study was designed to implement a drainage zone of high permeability in the main gravel-fill zone to enhance safety against accidental water infiltration into the dam. Two centrifuge tests were performed and compared to investigate the performance of the drainage zone. The first test was done with the drainage zone and the second without the drainage zone. In the centrifuge tests, water infiltration was simulated by raising the water table over pre-implemented cracks on the model face slab. The infiltration behaviors were monitored by pore water pressure transducers. The centrifuge tests showed that the drainage zone of the CFGD effectively drains infiltrating water out of the dam body in a short time. Numerical modeling was also performed to help understand the process of seepage through cracks.
机译：砂砾石材料最近已被用来代替碎石材料作为混凝土面板堆石坝（CRFD）中的主要堆石材料，以解决地质和环境问题。在本文中，开发了一种用于离心建模的实验方案，以模拟混凝土面板砾石坝（CFGD）。本研究中考虑的大坝旨在在主要的砾石充填区设置高渗透率的排水带，以增强防止意外水渗入大坝的安全性。进行了两次离心测试，并进行了比较，以研究排水区的性能。第一次测试是在排水区进行的，第二次测试是在排水区进行的。在离心机测试中，通过将水位升高到模型面板上预先实现的裂缝上方来模拟水的渗透。渗透行为由孔隙水压力传感器监测。离心测试表明，CFGD的排水区可在短时间内有效地将渗入的水排出坝体。还进行了数值建模，以帮助理解裂纹的渗漏过程。

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  • 来源
    《KSCE journal of civil engineering》 |2013年第5期|949-958|共10页
  • 作者

    Yun Wook Choo; Dong Hoon Shin; Sung Eun Cho; Eun Sang Im; Dong-Soo Kim;

  • 作者单位

    Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KA1ST), Daejeon 305-701, Korea;

    K-water Institute, Korea Water Resources Corporation, Daejeon 305-730, Korea;

    Dept. of Civil, Safety and Environmental Engineering, Hankyong National University, Anseong 456-749, Korea;

    K-water Institute, Korea Water Resources Corporation, Daejeon 305-730, Korea;

    Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701,Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    concrete faced gravel-fill dam; centrifuge modeling; zoning; seepage; drainage zone;

    机译：混凝土面板砾石坝;离心机建模分区渗漏;排水区;

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