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（1 廣州大學(xué)土木工程學(xué)院，510006；2 廣東科學(xué)中心籌建辦公室 廣州 510033）

［提要］利用液氮冷凍制樣、掃描電鏡和計(jì)算機(jī)圖像處理技術(shù)，采用多元逐步線性回歸的方法，對(duì)廣東科學(xué)中心46組飽和軟土試樣的顆粒分布分維值、孔隙分布分維值、孔隙度、孔隙總面積、孔隙總個(gè)數(shù)、平均孔隙周長(zhǎng)、孔隙平均直徑及孔洞的復(fù)雜度等微結(jié)構(gòu)參數(shù)與壓縮系數(shù)、壓縮模量、內(nèi)聚力和內(nèi)摩擦角等宏觀工程性質(zhì)參數(shù)的關(guān)聯(lián)性進(jìn)行了分析，初步探討了飽和軟土微結(jié)構(gòu)參數(shù)對(duì)工程性質(zhì)的影響，為飽和軟土微觀結(jié)構(gòu)力學(xué)理論的進(jìn)一步發(fā)展提供了思路和方法。

［關(guān)鍵詞］定量分析；線性回歸；飽和軟土；液氮制樣技術(shù)；掃描電鏡

Research on Engineering Property of Saturation Soft Soil Based on Microstructure Parameters/Zhang Jichao1, Xu Yong1, Li Wuping1, Zhu Lihong2, Yi He2, Wang Liangfu2(1 School of Civil Engineering, Guangzhou University, Guangzhou 510405, China; 2 Guangdong Scientific Center, Guangzhou 510033, China)

Abstract:With the liquid nitrogen refrigeration sample-made technique, the scan electronic microscope technique (SEM) and the image processing，analysis and computer vision technique，46 group sample"s microstructure parameters of saturation soft soil which withdraw from Guangdong Scientific Centre have been extracted. By adopting multivariable gradually linearization regress analysis，some numerical formulas between the micro-structural parameters and the engineering properties such as compression coefficient, compression module, cohesion and internal friction angle have been established. Some basic principles come into being to explain the macro-engineering phenomenon.

Keywords:quantitative analysis；multivariable gradually linearization regress analysis；saturation soft soil；liquid nitrogen refrigeration sample-made technique；SEM