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探地雷达在湿陷性黄土挖填方高边坡土体性状探测中的应用

王韵 王红雨 李其星 亢文涛

王韵,王红雨,李其星,等. 探地雷达在湿陷性黄土挖填方高边坡土体性状探测中的应用[J]. 中国地质灾害与防治学报,2023,34(2): 102-110 doi: 10.16031/j.cnki.issn.1003-8035.202201008
引用本文: 王韵,王红雨,李其星,等. 探地雷达在湿陷性黄土挖填方高边坡土体性状探测中的应用[J]. 中国地质灾害与防治学报,2023,34(2): 102-110 doi: 10.16031/j.cnki.issn.1003-8035.202201008
WANG Yun,WANG Hongyu,LI Qixing,et al. Application of the ground-penetrating radar technology in detection of soil properties of the high cutting and filling slopes in collapsible loess area[J]. The Chinese Journal of Geological Hazard and Control,2023,34(2): 102-110 doi: 10.16031/j.cnki.issn.1003-8035.202201008
Citation: WANG Yun,WANG Hongyu,LI Qixing,et al. Application of the ground-penetrating radar technology in detection of soil properties of the high cutting and filling slopes in collapsible loess area[J]. The Chinese Journal of Geological Hazard and Control,2023,34(2): 102-110 doi: 10.16031/j.cnki.issn.1003-8035.202201008

探地雷达在湿陷性黄土挖填方高边坡土体性状探测中的应用

doi: 10.16031/j.cnki.issn.1003-8035.202201008
基金项目: 国家自然科学基金项目(41962016);妙岭750kV变电站科技进步项目(SGNXSB00BDJS2100567);宁夏大学研究生创新项目(GIP2021-26)
详细信息
    作者简介:

    王韵:王 韵(1996-),女,重庆人,硕士研究生,主要从事边坡稳定性研究。E-mail:wy-slime@foxmail.com

    通讯作者:

    王红雨(1961-),男,宁夏银川人,博士,教授,主要从事水工及岩土工程研究。E-mail:why.nxts@163.com

  • 中图分类号: P642.22

Application of the ground-penetrating radar technology in detection of soil properties of the high cutting and filling slopes in collapsible loess area

  • 摘要: 在湿陷性黄土丘陵山区通过平山造地开辟建筑场地,施工后高挖填方边坡变形特征及其交界线在坡面出露位置土体内部性状是边坡稳定性评价的关键环节。为掌握西电东送重要枢纽——同心妙岭变电站湿陷性黄土高边坡稳定性,在该场地挖、填方区域边坡顶端布设了长度为416 m和372 m的测线,同时在挖填交界线两侧分别布设了长度为15 m和20 m的测线,利用pulseEKKO PRO专业型探地雷达,在所选测线上以0.5 m间隔为测点实施相关探测工作。结果表明:高挖方边坡波谱特征图像和地勘报告相同位置处土层分布一致,反射波较杂乱,边坡内部存在卸荷裂缝、零星破碎带等现象;高填方边坡无裂缝、局部沉陷等异常反射波面,填土均匀,填土下伏自重湿陷性黄土,土体存在潜在危险;挖填交界区域有较明显的挖填方交界线,该交界线坡度较缓,过渡均匀;交界线左侧(挖方区)探测波形复杂,岩性种类多,土体密实度高,右侧(填方区)波形规则,土性单一,土体密实度低,挖填方土性的差异性易导致不均匀沉降。研究结果可为平山造地建筑场地的高边坡支护设计与施工提供基础资料。
  • 图  1  妙岭变电站场地示意图

    Figure  1.  Miaoling substation site

    图  2  探地雷达测线布置

    Figure  2.  GPR survey line layout

    图  3  挖方边坡探地雷达波谱图

    Figure  3.  GPR spectrum of excavation slope

    图  4  挖方边坡地质剖面图

    Figure  4.  Geological section of excavation slope

    图  5  填方边坡探地雷达波谱图

    Figure  5.  GPR spectrum of filling slope

    图  6  填方边坡地质剖面图

    Figure  6.  Geological section of filling slope

    图  7  挖填方交界区域探地雷达波谱图

    Figure  7.  GPR spectrum of the excavation and filling boundary area

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  • 收稿日期:  2022-01-10
  • 修回日期:  2022-03-14
  • 网络出版日期:  2022-12-30
  • 刊出日期:  2023-04-25

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