图1  震中附近主要断裂及历史地震震中分布图

Fig.1  Major faults around the epicenter and epicentral distribution of historical  

       earthquakes

①郯庐断裂带; ②灵壁－炉桥断裂; ③固镇－怀远断裂;

④宿北断裂; ⑤宿南断裂 ;⑥临泉－刘府断裂; ⑦寿县－定远断裂