...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Quarterly Journal of Engineering Geology and Hydrogeology >Glacio-marine clay resistivity as a proxy for remoulded shear strength: correlations and limitations
【24h】

Glacio-marine clay resistivity as a proxy for remoulded shear strength: correlations and limitations

机译：Glacio-Marine Clay电阻率作为Remouded剪切强度的代理：相关性和限制

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

In geotechnical engineering in Norway, Sweden and Canada the presence of sensitive and/or quick clays poses a major challenge. Formation of these clays involves the leaching of salt from the pore fluid. Thus it has been recognized that electrical resistivity measurements could be useful in delineating leached and unleached clays. This paper seeks to assess the applicability, repeatability and reliability of the various geophysical techniques in the study of sensitive clays. It also attempts to understand the factors that control the measured resistivity and in particular to determine the limitations of directly obtaining the remoulded shear strength from the resistivity measurements. It was found that borehole, surface and airborne resistivity measurements are accurate and compatible. For the 30 Norwegian sites studied it was found that resistivity is primarily defined by the porewater salt content, with minor additional influence by clay content and plasticity, and porosity. A relationship exists between resistivity and remoulded shear strength but this is limited to material deeper than the dry crust and a surface weathering zone of about 7.5 m thickness. High resistivity (10 Omega m) may indicate quick or weathered clay but low resistivity (10 Omega m) conclusively points to stable, unleached clay.
机译：在挪威的岩土工程中，瑞典和加拿大的敏感和/或快速粘土的存在构成了重大挑战。这些粘土的形成涉及从孔隙液中浸出盐。因此，已经认识到，电阻率测量可能在划清浸出和解除的粘土中是有用的。本文旨在评估敏感粘土研究中各种地球物理技术的适用性，可重复性和可靠性。它还试图了解控制测量电阻率的因素，特别是确定直接从电阻率测量中获得切除剪切强度的限制。发现钻孔，表面和空气载率测量准确且兼容。对于研究的30个挪威网站，发现电阻率主要由沉积物盐含量定义，粘土含量和塑性含量轻微的额外影响和孔隙率。在电阻率和输料剪切强度之间存在关系，但这仅限于比干燥地壳更深的材料，以及厚度约为7.5米的表面耐候区域。高电阻率（＆ 10 omega m）可以表明快速或风化的粘土，但低电阻率（＆ 10ωm）最终指向稳定的无申粘土。

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