高密度电法在大盈江隐伏断裂探测中的应用

Application of high density resistivity method on exploring buried fault—Dayingjiang fault

简述了高密度电法基本原理,采用高密度电法对盈江盆地南侧的大盈江断裂隐伏段进行了探测。结果表明,大盈江断裂断错全新统地层,推断大盈江断裂为全新世活动断裂。结合探槽开挖结果对高密度电法揭示的隐伏断裂进行了验证,确定了大盈江断裂的走向、具体位置和活动时代。研究表明,高密度电法对隐伏断裂探测是一种简单易行的方法,同时为盈江县工程建设及防震减灾规划提供了依据。

The basic principle of high density resistivity method is briefly illustrated in this paper.By using the high density resistivity method, the buried section of Dayingjiang fault is detected on the south side of the Yingjiang Basin. The results show that Dayingjiang fault dislocated into Holocene strata,and Dayingjiang fault is infered to be an active fault in Holocene. Combined with the results of trench excavation, the buried faults have been verified by high density resistivity method. We confirmed the trend, specific location, and active era of Dayingjiang fault. The research indicates the simpleness and feasibility of the high density resistivity method. It provides a basis for the engineering construction and the planning of earthquake prevention and disaster reduction of Yingjiang County.