【摘要】 郯庐活断层长３６０ｋｍ，通过系统的填图可将其分为３个独立的活断层破裂段。对每段的几何形态、最新活动时代、大震复发间隔、现今活动状态以及分段障碍体等作了介绍，并对各段未来的大震危险性做了初步分析。更多还原

【Abstract】 Based on systematic geologic mapping，we found that the active fault in the Tancheng-Lu-jiang fault zone is not continuous and can be divided into three independent rupture segments，which are Anqiu segment，Juxian-Tancheng segment and Xinyi-Sihong segment．The geometri-cal pattern，displacment amount and strong earthquake recurrence interval on these three seg-ments are obviously different．Each segment responds to the maximum rupture length of a strongearthquake.At the separation of the segments，the faults are arranged in left-stepover，where an8～10km wide local uplift was formed．The local uplifts serve as the barriers between the seg-ments.By analysing the strong earthquake recurrence intervals and the age of the latest activity ofeach segment，we suggest that the Xinyi-Sihong segment is the most dangerous segment in thefuture，the Anqiu segment is the secondary one and the Juxian-Tancheng segment has little pos-sibility to suffer the strong earthquake.更多还原