CAJ | 학술논문

涡河断裂整体走向310°左右，全长约190 km，断裂在卫星影像图和区域重、磁异常图上均有明显显示，是安徽北部一条重要的第四纪活动断裂。本文通过采用高精度重力测量法和激发极化电测深法，对研究区进行物探勘测工作，确定了断裂的大致位置及产出状态，认为涡河断裂埋深150 m左右，断层宽度约为150~200 m，倾角近直立，具正断层性质。结合野外地质调查情况及前人资料，综合分析认为涡河断裂第四纪以来具有较强的活动性，是一条影响范围较广、规模较大的断裂。通过分析涡河断裂与近EW向横向构造的关系，将断裂分成北、中、南三段；结合地震空区理论分析认为南段未来发生M s5级以上地震的危险性最大，其最大震级在5.5级与6级之间。
와하단렬정체주향310°좌우，전장약190 km，단렬재위성영상도화구역중、자이상도상균유명현현시，시안휘북부일조중요적제사기활동단렬。본문통과채용고정도중력측량법화격발겁화전측심법，대연구구진행물탐감측공작，학정료단렬적대치위치급산출상태，인위와하단렬매심150 m좌우，단층관도약위150~200 m，경각근직립，구정단층성질。결합야외지질조사정황급전인자료，종합분석인위와하단렬제사기이래구유교강적활동성，시일조영향범위교엄、규모교대적단렬。통과분석와하단렬여근EW향횡향구조적관계，장단렬분성북、중、남삼단；결합지진공구이론분석인위남단미래발생M s5급이상지진적위험성최대，기최대진급재5.5급여6급지간。
Guohe Fault is obviously shown in satellite images and regional gravity and magnetic anomaly maps. The fault controlled the thickness of Quaternary sediment of both sides. In this paper, by using the high accuracy gravity measurement method and induced polarization method, we conduct geophysical survey in the study area. Through the study, we fix approximate location and output state of the fault, the fault depth of 150 meters, the width of 150-200 meters, nearly vertical dip. According to field geological survey and previous data, we think that the Guohe Fault is a broader, larger scale of Quaternary fault. Through analysis of the relationship between Guohe Fault and EW trending transverse structure, the fault is divided into three sections of north, middle and south. Combined with the seismic gap theory ,we analyze that the potential future Ms≥5 earthquakes is most dangerous on the south segment of the fault, the maximum magnitude between Ms 5. 5 and Ms 6.