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首页> 外文期刊>Bulletin of engineering geology and the environment >Landslide investigations in the northwest section of the lesser Khingan range in China using combined HDR and GPR methods
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Landslide investigations in the northwest section of the lesser Khingan range in China using combined HDR and GPR methods

机译：结合HDR和GPR方法在中国小兴安岭西北段进行滑坡调查

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摘要

In the northwest section of the lesser Khingan range, located in the high-latitude permafrost region of northeast China, landslides are a frequent occurrence, due to permafrost melting and atmospheric precipitation. High-density resistivity (HDR) and ground-penetrating radar (GPR) methods are based on soil resistivity values and characteristics of radar wave reflection, respectively. The combination of these methods, together with geological drilling, can be used to determine the stratigraphic distribution of this region, which will allow precise determination of the exact location of the sliding surface of the landslide. Field test results show that the resistivity values and radar reflectivity characteristics of the soil in the landslide mass largely differ from those of the soil outside the mass. The apparent resistivity values exhibit abrupt layering at the position of the sliding surface, with a sudden decrease in apparent resistivity. In addition, the radar wave shows strong reflection at the position of the sliding surface, where the amplitude of the radar wave exhibits a sudden increase. Drilling results indicate that the soil has high water content at the location of the sliding surface of the landslide mass in the study area, which is entirely consistent with the GPR and HDR results. Thus, in practice, sudden changes in apparent resistivity values and abnormal radar wave reflection can be used as a basis for determining the location of sliding surfaces of landslide masses in this region.
机译：在位于中国东北高纬度多年冻土区的较小的兴安岭西北段，由于多年冻土融化和大气降水，滑坡是经常发生的。高密度电阻率（HDR）和探地雷达（GPR）方法分别基于土壤电阻率值和雷达波反射特性。这些方法与地质钻探的结合可用于确定该区域的地层分布，从而可以精确确定滑坡滑动面的确切位置。现场测试结果表明，滑坡体中土壤的电阻率值和雷达反射率特性与质体外土壤的电阻率值和雷达反射率特性存在很大差异。表观电阻率值在滑动表面的位置处突然分层，表观电阻率突然降低。另外，雷达波在滑动表面的位置处表现出强烈的反射，在该位置处雷达波的振幅呈现出突然增加。钻探结果表明，研究区域滑坡体滑动面位置的土壤含水量很高，这与GPR和HDR结果完全一致。因此，在实践中，视电阻率值的突然变化和异常的雷达波反射可以用作确定该地区滑坡体滑动面位置的基础。

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