受柴油污染的高液限红黏土抗剪强度研究  

Shear strength of high liquid limit red clay contaminated by diesel oil

作　　者：贺泳超 陈秋南[2] 曾奥 周文兵 吴岑佳 龙坤 HE Yongchao;CHEN Qiunan;ZENG Ao;ZHOU Wenbing;WU Cenjia;LONG Kun(School of Resource&Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]湖南科技大学资源环境与安全工程学院,湖南湘潭411201 [2]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《铁道科学与工程学报》2022年第3期691-696,共6页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(52078211,51909087);湖南省自然科学基金资助项目(2020JJ4021);湖南省教育厅开放基金资助项目(18K064)。

摘　　要：在我国大量的公路、铁路路堤施工时,投入的柴油设备时有柴油泄漏,对路堤土壤存在不同程度的污染。针对这一问题,开展高填方高液限红黏土路堤土壤受柴油污染的抗剪强度研究。以江西省某高速公路高液限红黏土为研究对象,选用柴油为代表性油品,分别配置含油率为0%,3%,6%,9%及12%的5种不同污染程度的污染土样,开展高液限红黏土污染后的三轴试验。研究结果表明:黏聚力是决定柴油污染土抗剪强度的主要因素,柴油掺入量从0%到3%增加了1.97 kPa,柴油掺入量从3%到12%降低了29.62 kPa。柴油的污染对土样的内摩擦角影响不大。During the construction of a large number of highway and railway embankments in China, diesel oil leakage occurs when the diesel equipment is put into use, which causes different degrees of pollution to the embankment soil. In order to solve the problem, this paper studied the shear strength of high fill and high liquid limit red clay embankment soil polluted by diesel oil. By taking the high liquid limit red clay of a highway in Jiangxi Province as the case study example, the triaxial tests of high liquid limit red clay contaminated soil samples with oil contents of 0%, 3%, 6%, 9% and 12% were conducted as representative oil. The results show that cohesion is the main factor to determine the shear strength of diesel contaminated soil. The shear strength increased by 1.97 kPa when the amount of diesel oil increased from 0% to 3%, while decreased by 29.62 kPa when that of diesel oil increased from 3% to 12%. Diesel pollution has little effect on the angle of internal friction.

关 键 词：土壤污染 柴油污染 三轴试验 抗剪强度 

分 类 号：TU411[建筑科学—岩土工程]