...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Near surface geophysics >The geophysical investigation of lake water seepage in the regulated environment of the Bosherston Lily Ponds, South Wales, UK. Part 2: historical, dam-related pathways
【24h】

The geophysical investigation of lake water seepage in the regulated environment of the Bosherston Lily Ponds, South Wales, UK. Part 2: historical, dam-related pathways

机译：英国南威尔士Bosherston Lily Ponds管制环境中湖泊渗水的地球物理研究。第2部分：与大坝相关的历史路径

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

The detection, characterization and assessment of water loss through hydrological pathways is an important aspect of civil, hydrological and environmental engineering. At any site, variations in the form and hydrological integrity of both natural and man-made features can play a critical role in fluid transportation through the presence of enhanced hydraulic conductivity. Traditional hydrological and invasive engineering investigation methods are often unsuitable for ecologically sensitive environments and in this paper, we report the results of a non-invasive hydro-geophysical study at the Bosheston Lily Ponds in Pembroke, South Wales, UK, an area classified a Special Area of Conservation (SAC). For over 30 years, the lake system has experienced unexplained water loss and the geophysical surveys focused on identifying hydraulic conduits/pathways in the underlying carboniferous limestone and assessing the integrity of the man-made dam structure at the outlet of the lake system. The site is managed under tight regulatory regime that limits the scope and extent of any hydrological/geophysical investigations. The main objectives were to determine whether bedrock fracturing is promoting natural water loss and, more pertinently, if structural failures in the modern (and original) dam structures were responsible for significant loss of water at the outlet of the lakes. Ground-penetrating radar (GPR), electrical resistance tomography (ERT) and self-potential (SP) surveys were collected at targeted sites and the information gained used to ascertain the nature of the observed/predicted lake water loss. The results show that both the modem and original dam appear to be intact, structurally sound and show no evidence for significant water flow through its structures. Instead, localized zones of natural, high-density fracturing in the limestone bedrock appear to be the predominant cause of lake water loss.
机译：通过水文途径对失水的检测，表征和评估是土木，水文和环境工程的重要方面。在任何地方，天然和人造特征的形式和水文完整性的变化都可以通过增强的水力传导性在流体运输中发挥关键作用。传统的水文和侵入性工程调查方法通常不适合对生态敏感的环境，在本文中，我们报告了英国南威尔士彭布罗克州Bosheston百合池塘非侵入性水文地球物理研究的结果，该地区被归类为特殊地区保护区（SAC）。 30多年来，湖泊系统经历了无法解释的失水，而地球物理调查的重点是识别下层石炭系石灰岩中的水力管道/路径，并评估湖泊系统出口处的人工大坝结构的完整性。该场址在严格的监管制度下进行管理，从而限制了任何水文/地球物理调查的范围和程度。主要目标是确定基岩压裂是否正在促进自然水的流失，更重要的是，确定现代（和原始）大坝结构的结构性破坏是否是造成湖泊出口水流失的主要原因。在目标地点收集了探地雷达（GPR），电阻层析成像（ERT）和自电势（SP）调查，所获得的信息用于确定观测/预测的湖水损失的性质。结果表明，现代大坝和原始大坝看起来都完好无损，结构合理，没有证据表明有大量水流过其结构。取而代之的是，石灰岩基岩中天然的高密度压裂局部区域似乎是造成湖水流失的主要原因。

著录项

相似文献

  • 外文文献
  • 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