| 孔纲强,孙学谨,刘汉龙,傅钧义,王成青.孔隙液体对透明土渗透特性影响对比试验[J].水利学报,2017,48(11):1303-1310 |
| 孔隙液体对透明土渗透特性影响对比试验 |
| Contrast experiments on permeability of transparent soil influenced by pore fluids |
| 投稿时间：2017-06-09 |
| DOI：10.13243/j.cnki.slxb.20170557 |
| 中文关键词: 透明土 孔隙液体 渗透特性 电渗 模型试验 |
| 英文关键词: transparent soil pore fluid permeability electro-osmosis model test |
| 基金项目:国家自然科学基金项目（51478165） |
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| 摘要点击次数: 1732 |
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| 中文摘要: |
| 针对熔融石英砂与混合油、溴化钙及蔗糖等孔隙液体制配成的3种透明土试样，开展渗流液体与孔隙液体一致或者不一致两种情况下的常水头渗透试验，测得透明土材料在不同孔隙液体、粒径及相对密实度等情况下的渗透率，以及水在3种透明土试样中的渗透过程；并与福建标准砂相关试验结果进行了对比分析。进而开展透明土试样电渗可视化模型试验，初步探讨孔隙液体、渗透率等因素对电渗过程与机理的影响规律。试验结果表明，透明土试样渗透特性不仅与粒径分布、相对密实度等因素相关，而且与孔隙液体种类相关；混合油、溴化钙溶液制配成的透明土渗透率与天然砂土渗透率最为相近。 |
| 英文摘要: |
| Transparent soil is widely used for visualization of physical model tests on internal soil deformation engineering problems. Based on the transparent soil materials manufactured by fused quartz and three typical pore fluids (mixed oil, calcium bromide solution, and sucrose solution), a group of constant head permeability tests were carried out. Considering the difference between pore fluid and penetrating liquid, the permeability coefficients influenced by different pore fluids,particle size distribution,and relative density were measured in detail. Water infiltrations through transparent soil manufactured by different pore fluids were also measured. The penetration test on China ISO standard sand was taken for comparative analysis. Then, electro-osmosis visualization model tests were carried out based on transparent soil samples manufactured by different pore fluids. The influence of pore fluid on electro-osmotic process and mechanism is preliminary discussed. It shows that the permeability of transparent soil are not only related to particle size distribution and relative density, but also related to the pore fluids. Permeability coefficient of transparent soil manufactured by mixed oil or calcium bromide solution is the closest to that of natural sand. |
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