极端气候条件下黄土体地球物理灾害探测

Geophysical disaster detection of loess under extreme climate conditions

黄土具有非常明显的湿陷性与水敏性,在水分的渗透过程中,黄土的水力条件发生明显变化,极易诱发大量的黄土滑坡等地质灾害.这一特征在特殊极端气候条件下体现的更加显著,如暴雨、温度剧变等均可以诱发多种地质灾害.通过快速地球物理探测,确定黄土体不同深度物理性质变化以及裂隙的分布与变化,对于灾害的分析、预测与预警具有重要的意义.本文分析总结了不同探测技术在黄土体滑坡特征探测应用中的适用性,通过典型应用案例展示不同方法的实际应用效果,对未来黄土体灾害探测的发展趋势进行展望,为下一步的黄土体灾变地球物理探测技术的发展提供参考和建议.

Loess has very obvious collapsibility and water sensitivity.During the process of water infiltration,the hydraulic conditions of loess undergo significant changes,which is highly prone to inducing a large number of geological disasters such as loess landslides.This feature is more obvious under special extreme climate conditions,such as rainstorm,temperature upheaval,etc.,which can induce a variety of geological disasters.Through rapid geophysical exploration,it is of great significance to determine the changes in the physical properties of loess at different depths,as well as the distribution and changes of cracks,for the analysis,prediction,and early warning of disasters.This article analyzes and summarizes the applicability of different detection techniques in detecting the characteristics of loess landslides.Through typical application cases,the actual application effects of different methods are demonstrated,and the development trend of future loess disaster detection is prospected,providing reference and suggestions for the development of geophysical detection technology for loess disaster in the next step.