CAJ | 학술논문

通过可控源音频大地电磁测深、浅层地震和氡气测量等多种地球物理探测手段建立综合剖面，对北京南口-孙河断裂白浮-百善段做出精确定位。同时开展钻探工作，利用沉积相分析、磁性地层学等方法对钻孔地层剖面进行对比分析，对南口-孙河断裂北西段第四纪以来的活动性进行探讨。研究结果表明，主断裂在该段位置的延伸情况与前人资料所提供的位置相比向北东方向偏移500～800 m；百善联合钻孔则得出该断裂中更新世、晚更新世和全新世以来的垂直活动速率分别为0.12 mm/a、0.58 mm/a、0.31 mm/a，活动性特征表现为由弱到强、再到弱的总体规律。由此可见，建立物探综合剖面并辅以钻孔，对于城市隐伏断裂的定位具有较好的效果，可查明城市活动断层的位置并对其活动规律进行分析，继而采取防范和避让措施，对减轻城市地震灾害实际应用评估具有十分重要的意义。
통과가공원음빈대지전자측심、천층지진화동기측량등다충지구물리탐측수단건립종합부면，대북경남구-손하단렬백부-백선단주출정학정위。동시개전찬탐공작，이용침적상분석、자성지층학등방법대찬공지층부면진행대비분석，대남구-손하단렬북서단제사기이래적활동성진행탐토。연구결과표명，주단렬재해단위치적연신정황여전인자료소제공적위치상비향북동방향편이500～800 m；백선연합찬공칙득출해단렬중경신세、만경신세화전신세이래적수직활동속솔분별위0.12 mm/a、0.58 mm/a、0.31 mm/a，활동성특정표현위유약도강、재도약적총체규률。유차가견，건립물탐종합부면병보이찬공，대우성시은복단렬적정위구유교호적효과，가사명성시활동단층적위치병대기활동규률진행분석，계이채취방범화피양조시，대감경성시지진재해실제응용평고구유십분중요적의의。
The composite profile of some geophysical exploration methods,including controlled source audio-fre-quency magnetotellurice method,shallow seismic and radon methods,was used to pinpoint the position of Baifu-Baishan section of Nankou-Sunhe fault.By studying the borehole sedimentary facies and the magnetostragigra-phy characteristics,this paper discussed the activity of Nankou-Sunhe fault in Quaternary.The results show that the position displacement of the main fault is from 500 to 800 meters along NE direction compared with previous reports.The result of two boreholes in Baishan shows that the fault's vertical rate is 0.12 mm/a,0.58 mm/a and 0.31 mm/a in Middle Pleistocene,Late Pleistocene and Holocene,respectively.The activity of the fault is weak to strong,and then weak.Therefore,combined with borehole profiles,the comprehensive geophysical profile can pinpoint the location of buried active faults in cities,and can be used to analysis the faults' charac-teristics,providing valuable information for taking effective preventive measures to reduce the disaster in urban areas and to protect the lives and properties of people.