Brief Relation Analysis between Activity Feature of Zemuhe Fault and Medium-strong Earthquakes

Analyzing the data of the four deformation observational points which are across the Zemuhe Fault,we consider that the activity periods of the Zemuhe Fault is divided into four,during which,the upper side wall and the lower side wall of the fault stretches and presses each other.Based on the data of cross Zemuhe Fault deformation,we can catch some earthquake precursor before the medium-strong earthquakes occur in the juncture region between Sichuan province and Yunnan province.The earthquake almost occurs in 50 days after the deformation anomaly.