...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Transport in Porous Media >Experimental Study on Influence of Intermediate Principal Stress on the Permeability of Sandstone
【24h】

Experimental Study on Influence of Intermediate Principal Stress on the Permeability of Sandstone

机译：中间主应力对砂岩渗透性影响的实验研究

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 engineering, it is considerably important to understand the evolution process of sandstone deformation and permeability under complex stress conditions. Although numerous scholars have reported on sandstone permeability, many of their studies are only based on uniaxial or conventional triaxial stress conditions. In practical engineering, in situ stress evidently indicates three-dimensional anisotropy. In recent years, many scholars have performed experimental studies on rock permeability under true triaxial stress. There are, however, few investigations related to the influence of intermediate principal stress and intermediate principal stress coefficient on sandstone permeability; moreover, the mechanism is unclear. In this study, the permeability of sandstone under true triaxial stress conditions is measured using a true triaxial apparatus. The results show that the intermediate principal stress has significant effects on permeability and deformation of sandstone sample. Under different principal stress conditions, the permeability is observed to decrease with the increase of the principal stress. With increasing intermediate principal stress coefficient b (from 0 to 1), the major principal strain and the minor principal strain always compressed and finally decreased by 27.31 and 36.96%, while the intermediate principal strain finally changes from expansion to compression (from - 0.045 to 0.255%). Also the normalized permeability loss increased from 9.57 to 16.59%. In addition, by fitting the experimental data with several permeability models, it was found that a true triaxial permeability model can well describe the changes in sandstone permeability. Based on the fitting parameters, the influence of intermediate principal stress and its coefficient on the stress sensitivity of sandstone was analyzed.
机译：在工程中，了解复杂胁迫条件下砂岩变形和渗透性的进化过程非常重要。虽然众多学者们报道了砂岩渗透性，但许多研究才基于单轴或常规三轴应力条件。在实际工程中，原位应力明显表示三维各向异性。近年来，许多学者对真正的三轴应力进行了岩氧渗透性的实验研究。然而，很少有与中间主应力和中间主应力系数对砂岩渗透性的影响有关的研究;而且，机制尚不清楚。在这项研究中，使用真正的三轴仪器测量真正的三轴应力条件下砂岩的渗透性。结果表明，中间主应力对砂岩样品的渗透性和变形具有显着影响。在不同的主应力条件下，观察到渗透率随着主要压力的增加而降低。随着中间体主应力系数B（0至1），主要的主要菌株和次要的主要菌株总是压缩并最终降低27.31和36.96％，而中间主体应变最终从膨胀变为压缩（0.045到0.045 0.255％）。归一化渗透性损失也从9.57增加到16.59％。此外，通过用几种渗透性模型拟合实验数据，发现真正的三轴渗透模型可以很好地描述砂岩渗透性的变化。基于拟合参数，分析了中间主应力的影响及其系数对砂岩应力敏感性的影响。

著录项

  • 来源
    《Transport in Porous Media》 |2020年第3期|753-778|共26页
  • 作者

    Gao Heng; Zhang Dongming; Lu Jun; Yin Guangzhi; Wu Mingyang;

  • 作者单位

    Chongqing Univ State Key Lab Coal Mine Disaster Dynam & Control Chongqing 400030 Peoples R China|Chongqing Univ Sch Resources & Safety Engn Chongqing 400030 Peoples R China;

    Chongqing Univ State Key Lab Coal Mine Disaster Dynam & Control Chongqing 400030 Peoples R China|Chongqing Univ Sch Resources & Safety Engn Chongqing 400030 Peoples R China;

    Chongqing Univ State Key Lab Coal Mine Disaster Dynam & Control Chongqing 400030 Peoples R China|Chongqing Univ Sch Resources & Safety Engn Chongqing 400030 Peoples R China|Univ Toronto Dept Civil & Mineral Engn Toronto ON M5S 1A4 Canada;

    Chongqing Univ State Key Lab Coal Mine Disaster Dynam & Control Chongqing 400030 Peoples R China|Chongqing Univ Sch Resources & Safety Engn Chongqing 400030 Peoples R China;

    Chongqing Univ State Key Lab Coal Mine Disaster Dynam & Control Chongqing 400030 Peoples R China|Chongqing Univ Sch Resources & Safety Engn Chongqing 400030 Peoples R China;

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

    Permeability; True triaxial stress; Intermediate principal stress; Deformation;

    机译：渗透率;真正的三轴应力;中间主应力;变形;

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