研究二台活断层的水平断距与断尾沟长度的关系发现,该断层自全新世以来至少破裂过5次。每次粘滑破裂一般都发生8级地震,其古地震复现期平均为1800年左右。预计公元3700年二台断层将再次破裂发震,地点在活断层的南端。这种估计已为多级地震断层、多级断崖、多个地震崩积楔及开挖工作证实。 Studying the relationship between the horizontal fault distance of the two active faults and the length of the tail-gutter found that the fault ruptured at least 5 times since the Holocene. Each stick-slip rupture usually occurs 8 earthquakes, the ancient earthquake recurrence average of about 1800 years. It is estimated that two faults will once again rupture in 3700 BC and will be located at the southern end of the active fault. This estimate has been confirmed for multistage seismic faults, multistage cliffs, multiple seismic collapse wedges and excavations.