翟俊莅, 巨能攀, 赵建军. 2017: 高密度电法在倾倒变形分级中的应用研究. 工程地质学报, 25(3): 873-878. DOI: 10.13544/j.cnki.jeg.2017.03.036
    引用本文: 翟俊莅, 巨能攀, 赵建军. 2017: 高密度电法在倾倒变形分级中的应用研究. 工程地质学报, 25(3): 873-878. DOI: 10.13544/j.cnki.jeg.2017.03.036
    ZHAI Junli, JU Nengpan, ZHAO Jianjun. 2017: STUDY ON APPLICATION OF HDRM TO CLASSIFICATION OF TOPPL-ING DEFORMATION. JOURNAL OF ENGINEERING GEOLOGY, 25(3): 873-878. DOI: 10.13544/j.cnki.jeg.2017.03.036
    Citation: ZHAI Junli, JU Nengpan, ZHAO Jianjun. 2017: STUDY ON APPLICATION OF HDRM TO CLASSIFICATION OF TOPPL-ING DEFORMATION. JOURNAL OF ENGINEERING GEOLOGY, 25(3): 873-878. DOI: 10.13544/j.cnki.jeg.2017.03.036

    高密度电法在倾倒变形分级中的应用研究

    STUDY ON APPLICATION OF HDRM TO CLASSIFICATION OF TOPPL-ING DEFORMATION

    • 摘要: 倾倒变形是水电边坡比较常见的一种倾倒变形现象,具有明显的分区性。利用地球物理属性对倾倒变形程度进行定量化分级比较少见。本文利用不同分区的岩体间电阻率值的差异采用高密度电阻率法对苗尾水电站右坝肩边坡倾倒变形进行分级。为了消除岩石自身形成的背景电阻率值影响对岩体质量分级定量化,本文对二维地质模型正演获得了背景电阻率的分布规律。在测量电阻率的基础上除以背景电阻率得到了与倾倒变形程度有关系数a。最后通过与地质调查的方法对比验证,证明了该方法的可靠性与准确性并成功获得倾倒变形等级定量化指标。

       

      Abstract: Toppling deformation has obvious characteristics of partition and is common in rock slopes of one hydropower. The quantitative classification of toppling deformation degree with geophysical properties is infrequent. Based on the discrepancy of resistivity driving by different degrees of deformation, this paper classifies the degree of toppling deformation of the slopes at the right abutment of Miaowei hydropower station with the HDRM(High-Density Resistivity Method).To remove the influence of the ground resistivity caused by the rock itself, this paper gets the law of ground resistivity distribution through forward simulation of a 2D model. Then it gets properties a related with the degree of toppling deformation by dividing the metrical resistivity with ground resistivity. Finally, comparing with the geological survey method, this method has improved the reliability and accuracy. It can quantify the toppling deformation classification successfully.

       

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