谢首斌, 李敏, 杜红普, 李达, 张静怡. 2016: 环境温度对石油污染滨海盐渍土强度及变形特性的影响. 工程地质学报, 24(4): 616-621. DOI: 10.13544/j.cnki.jeg.2016.04.017
    引用本文: 谢首斌, 李敏, 杜红普, 李达, 张静怡. 2016: 环境温度对石油污染滨海盐渍土强度及变形特性的影响. 工程地质学报, 24(4): 616-621. DOI: 10.13544/j.cnki.jeg.2016.04.017
    XIE Shoubin, LI Min, DU Hongpu, LI Da, ZHANG Jingyi. 2016: INFLUENCE OF ENVIRONMENT TEMPERATURE ON STRENGTH AND DEFORMATION OF SALINE SOIL IN INSHORE CONTAMINATED BY PETROLEUM. JOURNAL OF ENGINEERING GEOLOGY, 24(4): 616-621. DOI: 10.13544/j.cnki.jeg.2016.04.017
    Citation: XIE Shoubin, LI Min, DU Hongpu, LI Da, ZHANG Jingyi. 2016: INFLUENCE OF ENVIRONMENT TEMPERATURE ON STRENGTH AND DEFORMATION OF SALINE SOIL IN INSHORE CONTAMINATED BY PETROLEUM. JOURNAL OF ENGINEERING GEOLOGY, 24(4): 616-621. DOI: 10.13544/j.cnki.jeg.2016.04.017

    环境温度对石油污染滨海盐渍土强度及变形特性的影响

    INFLUENCE OF ENVIRONMENT TEMPERATURE ON STRENGTH AND DEFORMATION OF SALINE SOIL IN INSHORE CONTAMINATED BY PETROLEUM

    • 摘要: 环境温度影响石油黏滞性,改变石油污染土的力学特性。借助无侧限抗压强度试验,研究不同温度条件下石油污染滨海盐渍土的强度及变形特性。结果证实:温度对石油污染盐渍土力学性质影响显著,温度越高,污染土抗压强度越低,20℃时,含油率15%污染土的抗压强度较未污染土下降近70%;石油污染滨海盐渍土的抗压强度随含油率的增加先增大后减小,环境温度与污染土强度峰值点处的含油率反相关,10℃、20℃、30℃条件下,强度峰值点处的含油率分别为15%、10%和5%;石油污染盐渍土表现为应变软化型破坏,含油率及环境温度影响石油污染盐渍土的抗变形能力,土样的破坏面积和裂缝宽度随含油率增加及温度升高而增大。

       

      Abstract: Environmental temperature affects oil viscosity and then changes the mechanical properties of petroleum contaminated soil. Unconfined compressive strength test is carried out to study the effect of temperature on strength and deformation of saline soils in inshore contaminated by petroleum. Results indicate that:(1) Temperature has significant effects on mechanical properties of oil contaminated saline soil. Compressive strength of petroleum contaminated soil decreases with the increasing of temperature, and reduces nearly 70% at 20℃ and oil content of 15%comparing with that of un-contaminated soils. (2) Unconfined compressive strength increases first and then decreases with the increase of petroleum content. There is an opposite correlation between environmental temperature and petroleum content at maximum strength. The maximum strength with oil content of 15%, 10%, and 5%shows at 10℃, 20℃ and 30℃,respectively. (3) Damage of petroleum contaminated saline soils presents strain softening type with failure plane of 45°±φ/2, and it is intensified with the increasing of petroleum content and temperature. Environmental temperature has obvious effect on the deformation of oil contaminated saline soil.

       

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