综合物探技术在两水滑坡勘察中的应用

滑坡是地质灾害中最常见的、分布范围最广,产生危害最严重的一种。结合工区地质情况和地球物理特征,本文选用了高密度电法、瑞雷波法以及地震映像法在滑坡区进行研究和应用。研究表明,相比常规的勘察手法,采用综合物探方法对滑坡进行勘察,实验表明:高密度电法对地下的电性分布有较好的的反映,但无法直接判断滑动面的几何形态;地震映像法能够较为直观的反映地下弹性界面的起伏情况,对不良地质现象反映明显;瑞雷波法对浅层有较高的分辨率,可以不受地层速度的干扰,能够较详细的探测滑坡体的内部情况。不仅解决了单一物探结果的多解性问题,提高了结果的准确性,而且工作效率高、相对成本较低。

The Application of Comprehensive Geophysical Exploration Technology to the Shuangshui Landslide Investigation

This study applies high-density resistivity method,Rayleigh wave method and seismic imaging method to the Shuangshui landslide investigation.The results indicate that the high-density resistivity method has a good response to the electric distribution in the ground,but can’t judge directly the geometry of the sliding surface;the seismic imaging method can directly reflect the fluctuation of the underground elastic interface and clearly reflect the adverse geological phenomena;the Rayleigh wave method has higher resolution for shallow layer and can detect the internal condition of the landslide body in detail without disturbance by the seismic velocity of the formation.