不同物理和几何参数条件下滑坡要素的地质雷达探测响应研究
发布时间：2018-08-12 11:42
【摘要】：利用改进的时域有限差分算法,对不同物理和几何参数条件下各种滑坡要素组成的综合模型进行数值模拟,研究滑带厚度、滑带充填介质、滑体岩土类型、滑坡裂缝等的地质雷达探测响应效果。研究结果表明,具有各自物理和几何参数的滑坡要素与地质雷达响应特征之间存在一一对应的数学关联,通过这种关联可以从野外实测数据中有效提取和判读滑坡要素的类型及物理几何特性,为滑坡稳定性评价提供地球物理依据。为了展示该研究成果的适用性,以三峡库区将军滩滑坡的地质雷达野外实测数据为例进行解释推断,成功识别出滑坡体的滑带埋深及分布、滑体的裂缝发育程度等情况,为评价滑坡稳定性,合理优化滑坡治理方案提供了科学参考。
[Abstract]:By using the improved finite-difference time-domain (FDTD) algorithm, the comprehensive model of various landslide elements under different physical and geometric parameters is numerically simulated, and the thickness of slip zone, the filling medium of slip zone, the types of landslide rock and soil are studied. The response effect of GPR detection for landslide cracks. The results show that there is a one-to-one correlation between the landslide elements with their own physical and geometric parameters and the response characteristics of the GPR. The correlation can effectively extract and interpret the types and physical geometric characteristics of landslide elements from field measured data, and provide geophysical basis for landslide stability evaluation. In order to demonstrate the applicability of the research results, taking the field measured data of the GPR landslide in the three Gorges Reservoir area as an example to interpret and infer, the slip zone depth and distribution of the landslide body and the degree of crack development of the landslide body are successfully identified. It provides a scientific reference for the evaluation of landslide stability and the rational optimization of landslide control scheme.
【作者单位】： 中国地质调查局成都地质调查中心;
【基金】：中国地质调查局项目(成渝经济区宜宾-万州沿江发展带1，
本文编号：2178946
[Abstract]:By using the improved finite-difference time-domain (FDTD) algorithm, the comprehensive model of various landslide elements under different physical and geometric parameters is numerically simulated, and the thickness of slip zone, the filling medium of slip zone, the types of landslide rock and soil are studied. The response effect of GPR detection for landslide cracks. The results show that there is a one-to-one correlation between the landslide elements with their own physical and geometric parameters and the response characteristics of the GPR. The correlation can effectively extract and interpret the types and physical geometric characteristics of landslide elements from field measured data, and provide geophysical basis for landslide stability evaluation. In order to demonstrate the applicability of the research results, taking the field measured data of the GPR landslide in the three Gorges Reservoir area as an example to interpret and infer, the slip zone depth and distribution of the landslide body and the degree of crack development of the landslide body are successfully identified. It provides a scientific reference for the evaluation of landslide stability and the rational optimization of landslide control scheme.
【作者单位】： 中国地质调查局成都地质调查中心;
【基金】：中国地质调查局项目(成渝经济区宜宾-万州沿江发展带1，
本文编号：2178946
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