高密度电法在加萨台隧道出口滑坡勘查中的应用及效果分析

滑坡是一种常见地质灾害,长期以来一直存在并威胁着人们的生命与财产安全,工程建设加剧地质环境的恶化,滑坡灾害时有发生。高密度电法集电测深和电剖面装置于一体,具有观测精度高,数据采集量大,地质信息丰富,生产效率高,以及探测深度较大等特点,在工程地质和水文地质勘查中被广泛应用。将高密度电法技术应用于加萨台隧道出口滑坡勘查中,通过地电成果图和钻探资料获得滑坡体空间发育及分布特征,总结分析滑坡体的性质、厚度及滑动面位置,验证实施高密度电法调查滑坡体的可行性。通过对滑坡区的地层结构、滑床位置及深部地层情况的分析解释,证实高密度电法应用效果良好,为进一步认识滑坡及其勘查治理提供地球物理依据。

Landslide is a common geological disaster,which has been existing and threatening the safety of people's life and property for a long time.Engineering construction aggravates the deterioration of geological environment,and landslides occur from time to time.The high-density electrical method integrates electric sounding and electrical profile devices,and has the characteristics of high observation accuracy,large amount of data collection,rich geological information,high production efficiency,and large exploration depth,so it is widely used in engineering geological and hydrogeological exploration.In this paper,the high density electrical method is applied to the landslide investigation at the exit of Jiasatai Tunnel.The spatial development and distribution characteristics of the landslide body are obtained through the geoelectric map and drilling data,and the properties,thickness and position of the sliding surface are summarized and analyzed.The feasibility of implementing high density electrical method to investigate landslide is verified.The analysis and interpretation of the stratigraphic structure,the position of the sliding bed and the deep strata in the landslide area confirms that the application effect of the high density electrical method is good,which provides a geophysical basis for further understanding of the landslide and its exploration and treatment.