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首页> 外文期刊>Geologia Croatica: a journal of the Institute of Geology Zagreb and Croatian Geological Society >A new numerical method for the analysis of monolithic seepage problems with complex drainage systems in a groundwater recharge area for a hydropower station in China
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A new numerical method for the analysis of monolithic seepage problems with complex drainage systems in a groundwater recharge area for a hydropower station in China

机译：中国水电站水电站地下水补给区复杂排水系统对整体渗流问题分析的新数值方法

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摘要

After construction of a dam impounding water in a reservoir, a monolithic seepage field develops in the surrounding rock mass. Here, a new finite element method is proposed for determining the shape and characteristics of the 3D monolithic seepage field including the free surface, considering complex drainage systems consisting of densely-spaced drainage holes and drainage galleries. To this end, the previously proposed virtual flux method is improved by a refined numerical integration scheme and a regularized Heaviside function for distinguishing the subregions below and above the free surface within a particular finite element. Leakage and overflow drainage holes are modeled as internal boundaries. The proposed numerical method is verified by an academic example, for which the analytical solution is available. Finally, the numerical simulation of the seepage field developing in the vicinity of a high dam and underground power house, constructed in the context of a hydropower plant project in China is used to show its application to a problem in engineering practice.
机译：在储层中施加坝撞击水之后，整体渗流场在周围的岩石质量中发展。这里，考虑由密集间隔的排水孔和排水库组成的复杂排水系统，提出了一种新的有限元方法来确定包括自由表面的3D单片渗流场的形​​状和特性。为此，通过精细的数值积分方案和正则化的重度函数改善了先前提出的虚拟磁通方法，用于区分特定有限元内的自由表面下方和上方的离子。泄漏和溢流排水孔被建模为内部边界。所提出的数值方法是由学术典型验证的，分析解决方案可用。最后，在中国水电站项目的背景下建造的高坝和地下功率房屋附近的渗流场的数值模拟用于表现出在工程实践中的问题上的应用。

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  • 作者

    Yan Jun; Liu Si-Hong; Wei Ying-Qi; Jin Song-Li; Cai Hong; Xiao Jian-Zhang;

  • 作者单位

    China Inst Water Resources &

    Hydropower Res Dept Geotech Engn State Key Lab Simulat &

    Regulat Water Cycle River 20 Chegongzhuang West Rd Beijing 100048 Peoples R China;

    Hohai Univ Coll Water Conservancy &

    Hydropower Engn Nanjing 210098 Peoples R China;

    China Inst Water Resources &

    Hydropower Res Dept Geotech Engn State Key Lab Simulat &

    Regulat Water Cycle River 20 Chegongzhuang West Rd Beijing 100048 Peoples R China;

    China Inst Water Resources &

    Hydropower Res Dept Geotech Engn State Key Lab Simulat &

    Regulat Water Cycle River 20 Chegongzhuang West Rd Beijing 100048 Peoples R China;

    China Inst Water Resources &

    Hydropower Res Dept Geotech Engn State Key Lab Simulat &

    Regulat Water Cycle River 20 Chegongzhuang West Rd Beijing 100048 Peoples R China;

    China Inst Water Resources &

    Hydropower Res Dept Geotech Engn State Key Lab Simulat &

    Regulat Water Cycle River 20 Chegongzhuang West Rd Beijing 100048 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地质学;
  • 关键词

    monolithic seepage problem; drainage system; free surface; finite element method;

    机译：单片渗流问题;排水系统;自由表面;有限元法;

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