摘要
为了研究膨胀土的胀缩特性对引水渠工程的影响,对取自黑龙江省北部某渠道工程沿线10个钻孔中20个不同深度的膨胀土土样进行了膨胀率及收缩特性试验研究。结果表明,土样的膨胀率、体缩率随着取样深度的增加基本呈减小的趋势;对击实膨胀土,其含水率愈大,膨胀量愈小;膨胀率与干密度呈正相关关系;含水率对膨胀率的影响比干密度对膨胀率的影响相对较明显。
In order to study the influence of swell-shrink performance of expansive soil on diversion canal project,laboratory test study was conducted on the expansion rate and shrinkage characteristics of specimens of expansive soil in 10 holes with20 different depths along a diversion canal project in the northern part of Heilongjiang Province. The results show that the expansion rate and volume shrinkage ratio of soil specimens decreases with the increase of sampling depth. When expansive soil has been compacted,the larger the moisture content is,the smaller the expansion rate is. The expansion rate is positively correlated with dry density. Effect of moisture content on the expansion rate is relatively obvious that effect of the dry density on the expansion rate.
引文
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