• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ground water >Analytical Solution for Modeling Discharge into a Tunnel Drilled in a Heterogeneous Unconfined Aquifer
【24h】

Analytical Solution for Modeling Discharge into a Tunnel Drilled in a Heterogeneous Unconfined Aquifer

机译：对非均质含水层中钻进隧道的流量进行建模的解析解决方案

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Predicting transient inflow rates into a tunnel is an important issue faced by hydrogeologists. Most existing analytical solutions overestimate the initial discharge due to the assumption that drilling was instantaneous over the entire tunnel length. In addition, they assume a homogeneous system. An alternative model was recently developed for tunnels intersecting heterogeneous formations, but its application was reduced to the case of confined flow to deep tunnels in weakly diffusive aquifers. In this paper, we adapt existing analytical solutions for drainage systems to the specific case of a tunnel progressively drilled in a highly diffusive heterogeneous unconfined aquifer. The case of a tunnel overlying an impervious layer is analytically solved by applying the superposition principle, while the case of a tunnel constructed some distance above an impervious layer is solved by discretizing the tunnel length into subsectors. Both models can simulate transient discharge into a tunnel drilled at various speeds through a heterogeneous unconfined aquifer, and allow the prediction of discharge rates in shallow tunnels located in highly diffusive aquifers. We successfully applied this approach to a tunnel in heterogeneous volcanic rock.
机译：预测流入隧道的瞬时流量是水文地质学家面临的重要问题。大多数现有的分析解决方案高估了初始排放量，原因是假设在整个隧道长度上钻孔都是瞬时的。此外，他们假设系统是同质的。最近为与非均质地层相交的隧道开发了一种替代模型，但将其应用简化为在弱扩散含水层中限制流向深层隧道的情况。在本文中，我们将现有的排水系统分析解决方案适应于在高度扩散的非均质非承压含水层中逐步钻探的隧道的特殊情况。通过应用叠加原理，可以解决隧道在不透水层上的情况，而通过在不透水层上方一定距离处构造隧道的情况，可以通过将隧道长度离散化为子扇区来解决。两种模型都可以模拟通过非均质非承压含水层以各种速度钻入隧道的瞬态排放，并能够预测位于高度扩散含水层中的浅层隧道的流量。我们成功地将此方法应用于非均质火山岩中的隧道。

著录项

  • 来源
    《Ground water》 |2014年第4期|597-605|共9页
  • 作者

    Jean-Christophe Marechal; Sandra Lanini; Bertrand Aunay; Pierre Perrochet;

  • 作者单位

    D3E/NRE Direction, Bureau de Recherches Geologiques et Minieres, 34000 Montpellier, France;

    Bureau de Recherches Geologiques et Minieres, 34000 Montpellier, France;

    Bureau de Recherches Geologiques et Minieres, 34000 Montpellier, France;

    Centre of Hydrogeology, University of Neuchatel, 2000 Neuchatel, Switzerland;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号