| 珠江三角洲软土微结构的定量研究 |
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| 引用本文： | 李榴芬,彭元贵.珠江三角洲软土微结构的定量研究[J].华东地质学院学报,2001,24(2):127-130. |
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| 作者姓名： | 李榴芬 彭元贵 |
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| 作者单位： | [1]中山大学地球科学系，广州510275 [2]深圳市建设基础工程公司，深圳518026 |
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| 摘 要： | 对用不同长度的PVC管在珠海和广州两地采得的淤泥样柱施于一定荷载，然后在扫描电镜下研究软土受压后在样柱垂深方向上的微结构变化，并将样品的微结构照片扫描，在计算机内进行量化处理。结果表明，样品的孔隙分布分维差随着离施压点距离的增加而逐渐减小，从而得到两者的关系方程。据此，可了解在一定荷载下应力在软土层中向下的衰减趋势。文章还对软土的天然含水量和围压对压缩变形的影响作了初步的讨论。
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| 关 键 词： | 珠江三角洲 软土样桩 压缩实验 孔隙分布分维差 PVC管 扫描电镜 微结构 |
| 文章编号： | 1000-2251(2001)02-127-04 |
| 修稿时间： | 2001年2月11日 |
Quantitative Study on the Microstructure of Soft Clay in Zhujiang Delta |
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| LI Liu\|fen\,\ PEN Yuan\|gui\.Quantitative Study on the Microstructure of Soft Clay in Zhujiang Delta[J].Journal of East China Geological Institute,2001,24(2):127-130. |
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| Authors: | LI Liu\|fen\ \ PEN Yuan\|gui\ |
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| Institution: | LI Liu\|fen\+1,\ PEN Yuan\|gui\+2 |
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| Abstract: | The microstructure of soft soil column after loading obtained by PVC pipes of different length in Zhuhai and Guangzhou was observed by SEM and quantitatively processed by computer.The result indicated that the fractal dimension difference of void distribution decreases with the increase of distance between the sampled depth and the loading point and an empirical equation was established.The tendency of stress decrease with depth can be predicated by this equation.The influence of natural water content and surrounding pressure on soil compression was preliminarily discussed. |
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| Keywords: | Zhujiang delta Soft soil column Compression test Fractal dimension difference of void distribution Quantitative study |
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