石油污染土的击实特性

被引：15

作者：

郑天元 ^{[1
]}

杨俊杰 ^{[1
]}

刘江娇 ^{[1
]}

童玲 ^{[2
]}

机构：

[1] 中国海洋大学海洋环境与生态教育部重点实验室

[2] 华北水利水电学院环境与市政工程学院

来源：

水文地质工程地质 | 2010年 / 37卷 / 03期

关键词：

石油污染; 壤粘土; 干密度; 最优含水率;

D O I：

10.16030/j.cnki.issn.1000-3665.2010.03.016

中图分类号：

X53 [土壤污染及其防治];

学科分类号：

082803 ; 120405 ;

摘要：

为了解石油污染对土的压实特性的影响,利用室内击实试验,以原油、柴油和水为介质,得到了单一液体介质和油水混合介质时土的击实曲线。结果表明:石油代替水作为壤粘土孔隙流体,其击实曲线无明显峰值,干密度随含油率增加略有增大但远小于无污染土的最大干密度。油水混合作为孔隙流体,随含油率的增加,原油污染土壤的击实曲线由钟型、双峰型转向无明显峰值曲线,出现类似高液限粘土压实特性;柴油污染土的击实曲线由尖锐型转变为无峰值型;最优含水率均减小,最大干密度随含油率变化规律与油品性质有关。提出了"油膜润滑"的新观点,可较好地解释石油污染壤粘土击实曲线的变化规律。

引用

页码：102 / 106

页数：5

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