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    基于透明岩土材料的可视化渗流实验及其应用前景

    刘建军 汪尧 宋睿

    刘建军, 汪尧, 宋睿, 2017. 基于透明岩土材料的可视化渗流实验及其应用前景. 地球科学, 42(8): 1287-1295. doi: 10.3799/dqkx.2017.522
    引用本文: 刘建军, 汪尧, 宋睿, 2017. 基于透明岩土材料的可视化渗流实验及其应用前景. 地球科学, 42(8): 1287-1295. doi: 10.3799/dqkx.2017.522
    Liu Jianjun, Wang Yao, Song Rui, 2017. Visual Seepage Experiment Based on Transparent Rock-Soil Material and Its Application Prospect. Earth Science, 42(8): 1287-1295. doi: 10.3799/dqkx.2017.522
    Citation: Liu Jianjun, Wang Yao, Song Rui, 2017. Visual Seepage Experiment Based on Transparent Rock-Soil Material and Its Application Prospect. Earth Science, 42(8): 1287-1295. doi: 10.3799/dqkx.2017.522

    基于透明岩土材料的可视化渗流实验及其应用前景

    doi: 10.3799/dqkx.2017.522
    基金项目: 

    国家自然科学基金项目 51174170

    国家科技重大专项 2017ZX05013-001

    国家科技重大专项 2011ZX05013-006

    详细信息
      作者简介:

      刘建军(1972-),男,教授,主要从事油气藏渗流理论及工程应用方面研究

      通讯作者:

      汪尧

    • 中图分类号: P334.92

    Visual Seepage Experiment Based on Transparent Rock-Soil Material and Its Application Prospect

    • 摘要: 渗流模型实验能够模拟天然岩土体中的渗流过程以及流体在介质中的运动规律,因此被广泛地应用于岩土、石油工程等多个领域的研究中.然而在传统的渗流模型实验中,由于模型介质的不透明,流体在介质中具体的渗流过程、扩散规律和赋存状态并不能被直观地观测到.因此在总结了可视化渗流实验的研究进展,归纳了现有成果取得的进展与存在的不足;提出了一种基于透明岩土相似材料,并结合光学观测手段、数字图像处理技术和示踪技术的可视化渗流实验新技术,对比分析了该技术与传统可视化渗流实验的优缺点.结果表明相较于传统渗流实验,该技术除了可以实现具体渗流过程的可视化观测外,还具有装置简单、易于操作、经济适用等方面的优点.表明利用这种材料开展渗流实验的可视化观测是可行的,为基于透明岩土材料的可视化渗流模型实验的开展奠定了理论基础.

       

    • 图  1  渗流实验微观模型

      a.岩心铸体薄片;b.玻璃薄片模型;c.硅胶薄片(4 cm×4 cm);据杨珂和徐守余(2009)于明旭等(2013)

      Fig.  1.  Microscopic model for seepage experiment

      图  2  透明岩土材料试样

      Iskander(2010)

      Fig.  2.  Sample of the transparent rock-soil material

      图  3  试样制备流程

      Fig.  3.  The sketch of sample preparation

      图  4  模型内部变形可视化观测装置示意

      隋旺华等(2011)

      Fig.  4.  The sketch of visual observation system for internal deformation

      图  5  透明岩土材料渗流实验装置

      Fig.  5.  The seepage experiment device of the transparent rock-soil material

      图  6  基于透明岩土材料的渗流实验

      a.渗流实验系统;b.示踪剂和流体的色谱分离现象;据Liu(2003)

      Fig.  6.  Seepage experiment based on transparent rock-soil material

      表  1  不同类别透明岩土材料物理力学参数

      Table  1.   Physical and mechanical parameters of different typestransparent rock-soil materials

      骨料类别 第1类(无定型硅粉) 第2类(硅胶) 第3类(熔融石英) 第4类(水凝胶) 第5类(合成锂皂石)
      折射率 1.442 1.442 1.458 1.333 1.336
      饱和容重(kN/m3) 9.4~16.0 11.0~14.0 13.4~16.4 10.0 10.0
      内摩擦角(°) 19~36 29~42 44~59 - -
      粘聚力(kPa) 20~44 0 0 - -
      压缩指数 1.60~3.00 - 0.34~0.54 0.10~0.15 16.60~20.60
      渗透系数(cm/s) 2.3×10-7~2.5×10-5 1.5×10-4~7.0×10-3 1.3×10-5~2.1×10-5 7×10-2~6×10-8 5.0×10-9~1.6×10-6
      固有渗透率(μm2) 0.015~0.160 1~45 24~40 - -
      匹配孔隙流体 矿物油或者溴化钙溶液 矿物油或者溴化钙溶液 矿物油、蔗糖溶液或STSI
      适用模拟对象及问题 性质与黏土相似 性质与砂土相似 饱和-非饱和砂岩 土体中渗流问题 软弱湖、海相沉积物
      注:据Iskander et al.(2015).
      下载: 导出CSV
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