...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Australian Geomechanics >HYDROGEOLOGICAL PROPERTIES OF THE HAWKESBURY SANDSTONE IN THE SYDNEY REGION
【24h】

HYDROGEOLOGICAL PROPERTIES OF THE HAWKESBURY SANDSTONE IN THE SYDNEY REGION

机译：悉尼地区霍克斯伯里砂岩的水文地质特性

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

Geotechnical and hydrogeological data obtained from investigations for the design of tunnels in Sydney have created a large database that describes the hydrogeological properties of the Sydney Hawkesbury Sandstone, providing an insight into its hydraulic behaviour. Investigations for the Epping to Chatswood Rail Line and another tunnel project in Sydney included drilling of over 150 boreholes and execution of over 450 packer (water pressure) tests within these boreholes. For the Epping to Chatswood Rail Line, a 48-hour pumping test was conducted at two separate locations and acoustic borehole imaging was conducted in 20 boreholes to provide information on subsurface defect characteristics, essential to understanding hydraulic behaviour. This paper presents the results of a statistical analysis of packer test results and borehole imaging data, a comparison to pumping test results, and compares measured groundwater inflow rates from the tunnels with estimates from numerical modelling. Data analyses show the depth-dependence of the hydraulic conductivity of the Hawkesbury Sandstone, show a relationship between hydraulic conductivity and defect distribution, and demonstrate the requirement to address scale effects when using packer test results to assess groundwater inflow to underground excavations.
机译：从悉尼隧道设计调查中获得的岩土和水文地质数据创建了一个大型数据库，该数据库描述了悉尼霍克斯伯里砂岩的水文地质特性，从而可以深入了解其水力特性。对查普斯伍德铁路（Epsing to Chatswood Rail Line）和悉尼另一个隧道项目的调查包括钻探150多个钻孔，并在这些钻孔中进行了450多次封隔器（水压）测试。对于Epping到Chatswood铁路线，在两个不同的位置进行了48小时的抽水测试，并在20个钻孔中进行了声井成像，以提供有关地下缺陷特征的信息，这对于理解水力行为至关重要。本文介绍了封隔器测试结果和井眼成像数据的统计分析结果，与抽水测试结果进行了比较，并比较了从隧道测得的地下水流入量和数值模拟估算值。数据分析显示了霍克斯伯里砂岩的水力传导率与深度的关系，表明了水力传导率与缺陷分布之间的关系，并证明了在使用封隔器测试结果评估地下水流入地下开挖时需要解决水垢效应。

著录项

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