| 雄安新区附近主要隐伏断裂第四纪活动性研究 |
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| 引用本文：商世杰,丰成君,谭成轩,戚帮申,张鹏,孟静,王苗苗,孙明乾,万佳威,王惠卿,项歆璇.2019.雄安新区附近主要隐伏断裂第四纪活动性研究[J].地球学报,40(6):836-846. |
| DOI：10.3975/cagsb.2019.033101 |
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| 基金项目:中国地质调查局地质调查项目“京津冀协同发展区活动构造与区域地壳稳定性调查”(编号: DD20160267);国家自然科学基金项目“断裂活动导致地应力解耦的机理研究”(编号: 41702341);中国地质科学院地质力学研究所基本科研业务费项目“京津冀地区地下空间地质环境调查预研究”(编号: DZLXJK201711) |
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| 中文摘要:雄安新区建设是调整优化京津冀城市布局和空间结构的重大举措, 雄安及邻区内主要隐伏断裂活动性研究对保障新区的规划、建设具有重大意义。通过可控源音频大地电磁测深、浅层地震、高密度电阻率法综合地球物理探测, 结合钻孔地层剖面记录, 基本查清雄安新区外围保定—石家庄断裂及徐水—大城断裂的几何分布特征与第四纪活动性。结果表明: 1)保定—石家庄断裂为走向NE–SW, 倾向SE, 倾角45°~75°的正断层; 2)徐水—大城断裂为走向WNW–ESE, 倾向S, 倾角约70°的正断层; 3)保定—石家庄断裂第四纪以来不活动, 徐水—大城断裂晚更新世以来不活动, 雄安新区整体处于构造稳定区。 |
| 中文关键词:雄安新区 保定—石家庄断裂 徐水—大城断裂 断裂活动性 高密度电法 浅层地震 可控音频大地电磁测深 钻孔联合剖面 |
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| Quaternary Activity Study of Major Buried Faults near Xiongan New Area |
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| Abstract:The construction of Xiong’an New Area is an important measure to adjust and optimize the urban layout and spatial structure of Beijing, Tianjin and Hebei. The study of the activity of main buried faults in Xiongan New Area and its adjacent areas is of great significance for the planning and construction of the new area. Through the comprehensive geophysical exploration of controlled source audio-frequency magnetotelluric sounding, shallow seismic and high-density resistivity, combined with borehole stratigraphic profile records, the geometric distribution characteristics and Quaternary activity characteristics of Baoding–Shijiazhuang and Xushui–Dacheng faults in the periphery of Xiongan New Area are basically clarified. Some conclusions have been reached: 1) Baoding–Shijiazhuang fault is a normal fault with strikes NE–SW and dips SE with dip angle being 45°~75°; 2) Xushui–Dacheng fault is a normal fault which strikes WNW–ESE and dips S with dip angle being 70°; 3) Baoding–Shijiazhuang fault has not been active since Quaternary, Xushui–Dacheng fault has not been active since Late Pleistocene, and Xiong’an New Area is in a tectonic stable area as a whole. |
| keywords:Xiongan New Area Baoding–Shijiazhuang fault Xushui–Dacheng fault fracture activity high density electricity method shallow seismic controlled audio magnetotelluric sounding joint borehole profile |
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