利用物探方法探测地下隐伏活动断裂一直是地震安评工作中所研究的热点问题。该文基于隐伏活动断裂的地电特征,对电阻率测深法探测效果的必要条件和充分条件进行了深入分析,并给出了相应的技术措施。通过河北省冀东昌黎断层探测实践表明,在具备开展电阻率测深法的条件下,采用单一的方法是完全可以准确探明隐伏断裂分布的,既能发挥电阻率测深法成熟、高效、受地形影响较小的优势,又可明显降低探测成本。 Geophysical methods to detect buried faults in the earth have always been the focus of the study on seismic safety assessment. Based on the geoelectric characteristics of hidden active faults, this paper deeply analyzes the necessary and sufficient conditions of resistivity sounding detection and gives corresponding technical measures. Through the practice of Changli fault detection in Jidong, Hebei Province, it has been shown that the single method can accurately detect the distribution of buried faults under the condition of resistivity soundings, which can not only make the resistivity soundings mature, The advantages of less affected by the terrain, but also significantly reduce the cost of exploration.