摘要
石油因管道泄漏等因素进入环境当中,影响土体工程性质并带来环境岩土工程问题。利用室内击实试验、固结压缩试验、无侧限抗压强度试验以及微观扫描电镜结果,研究不同石油污染程度下土体工程性质的变化规律。试验结果表明:随着石油污染程度增大,污染土体干密度峰值增大,最优含水率降低;压缩性随之增大;当污染土无侧限抗压强度在石油浓度较低时,随浓度的增大而增大,当石油浓度为4%时,达到峰值,而后随着石油污染浓度继续增大无侧限抗压强度逐渐降低。微观扫描电镜结果表明:土体受石油污染之后,土颗粒分布由分散均匀体结构转变为絮状和颗粒状结构,且土体孔隙明显增大。
In order to understanding the influence on soils property and environmental geotechnical engineering problems caused by the oil leakage,a serials of bench tests were conducted,such as the standard compaction tests,consolidation tests,unconfined compressive strength（ UCS） tests and scanning electron microscopy（ SEM）. It was indicated that the dry density of contaminated soil increased and optimum moisture content decreased with the increasing concentration of oil content under standard compaction condition. There was a peak value with 4% oil content by weight of dry soil,and UCS decreased with the oil content increased and decreased respectively. The SEM result showed that homogeneous structure prominently transformed into flocculent and granulate structure with the oil content increased.
出处
《工业建筑》
CSCD
北大核心
2016年第6期99-102,共4页
Industrial Construction
基金
国家自然科学基金项目(51409154)
