杨洋, 苏晶文, 李云峰, 张庆. 2018: 河流相沉积环境对软土力学性能影响研究. 工程地质学报, 26(s1): 607-611. DOI: 10.13544/j.cnki.jeg.2018162
    引用本文: 杨洋, 苏晶文, 李云峰, 张庆. 2018: 河流相沉积环境对软土力学性能影响研究. 工程地质学报, 26(s1): 607-611. DOI: 10.13544/j.cnki.jeg.2018162
    YANG Yang, SU Jingwen, LI Yunfeng, ZHANG Qing. 2018: INFLUENCE OF SEDIMENTARY ENVIRONMENT OF FLUVIAL FACIES ON MECHANICAL PROPERTIES OF SOFT SOIL. JOURNAL OF ENGINEERING GEOLOGY, 26(s1): 607-611. DOI: 10.13544/j.cnki.jeg.2018162
    Citation: YANG Yang, SU Jingwen, LI Yunfeng, ZHANG Qing. 2018: INFLUENCE OF SEDIMENTARY ENVIRONMENT OF FLUVIAL FACIES ON MECHANICAL PROPERTIES OF SOFT SOIL. JOURNAL OF ENGINEERING GEOLOGY, 26(s1): 607-611. DOI: 10.13544/j.cnki.jeg.2018162

    河流相沉积环境对软土力学性能影响研究

    INFLUENCE OF SEDIMENTARY ENVIRONMENT OF FLUVIAL FACIES ON MECHANICAL PROPERTIES OF SOFT SOIL

    • 摘要: 皖江地区广泛分布着深厚河流相软土,对区域工程建设造成一定的影响。本文以皖江芜湖平原区软土为研究对象,包括长江冲积软土以及青弋江冲积软土,探索不同沉积环境对软土力学性能影响。通过对区域深厚软土钻探取样进行土工试验,结合现场原位试验,统计其力学性能差异;对区内深厚软土取样进行第四系沉积环境分析,主要通过粒度试验,建立沉积环境与力学性能物理联系。研究结果表明青弋江冲积软土较长江冲积软土有较高的强度、较低的压缩性。长江冲积平原区水动力较强,局部存在粉细砂夹层,沉积环境较动荡;而青弋江冲积平原区水动力较稳定,沉积环境平稳。本文结合工程地质学与第四纪地质学分析,提出河流相沉积环境对软土力学性能影响,建立力学性能与沉积环境之间物理联系。为皖江软土地区工程建设提供依据。

       

      Abstract: The deep fluvial soft soil is widely distributed in Anhui Province. It has a certain influence on the construction of regional engineering. In this paper, the soft soil in the Wuhu plain of Anhui Province is taken as the research object, including the alluvial soft soil of the Yangtze River and the alluvial soft soil of Qingyijiang River. The influence of different depositional environments on the mechanical properties of soft soil is explored. Geotechnical tests and field tests in deep soft soil area were carried out to evaluate their mechanical properties. The depositional environment of the quaternary system is analyzed in the deep soft soil area. The particle size test is used to establish the physical relation between the sedimentary environment and the mechanical properties. The results show that the alluvial soft soil of Qingyijiang River has higher compressive strength and lower compressibility than the alluvial soft soil of Yangtze River. The sedimentary environment of Yangtze River is volatile with strong water power and local existence of fine sand layer. However, in the alluvial plain area of Qingyijiang River, the hydrodynamic force is relatively stable, and the sedimentary environment is stable. Based on the analysis of engineering geology and Quaternary geology, the influence of fluvial facies sedimentary environment on the mechanical properties of soft soil is put forward. The physical relationship between mechanical properties and sedimentary environment is established. It provides the basis for the construction of the soft soil area in Anhui Province.

       

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