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北京顺义断裂第四纪活动性地球物理及钻孔综合探测证据
投稿时间:2019-04-20  修订日期:2019-07-22  点此下载全文
引用本文:
DOI:10.19762/j.cnki.dizhixuebao.2020002
摘要点击次数: 130
全文下载次数: 139
作者单位E-mail
戚帮申 北京市地质勘察技术院 qibangshen@126.com 
丰成君 中国地质科学院地质力学研究所 feng2010618@aliyun.com 
谭成轩 中国地质科学院地质力学研究所  
张鹏 中国地质科学院地质力学研究所  
孟静 中国地质科学院地质力学研究所  
孙明乾 中国地质科学院地质力学研究所  
雷晓东 北京市地质勘察技术院  
石涵静 北京市地质勘察技术院  
易冰 防灾科技学院  
杨肖肖 中国科学院 地质与地球物理研究所  
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(DD20160267)”、“通州-石家庄活动构造带区域地质调查(DD20190317)”、国家自然基金“断裂活动导致地应力解耦的机理研究(41702341)”和北京市地质矿产勘查开发局地质调查项目“延庆盆地12.5 万高精度重磁测量(PXM2019-158307-000009)”联合资助。
中文摘要:顺义断裂是北京平原区重要的隐伏断裂之一,其第四纪活动性及其对地表地裂缝地质灾害影响的研究是优化首都地区国土空间开发格局和防灾减灾体系建设的必要工作。针对隐伏断裂的复杂性特征,利用可控源音频大地电磁测深(CSAMT)、浅层人工地震、高密度电阻率法地球物理探测,以及钻孔地层剖面记录等方法,综合分析顺义断裂第四纪活动特征,结果表明:1)顺义断裂走向NE,倾向SE,正断活动特征,为全新世活动断裂,北段北小营附近断裂上下盘早更新世、中更新世、晚更新世和全新世以来的垂直滑动速率分别为0.16mm/a、0.07mm/a、0.29 mm/a和0.54 mm/a,南段孙河附近断裂上下盘中更新世、晚更新世和全新世以来的垂直滑动速率分别为0.07mm/a、0.28 mm/a和1.90 mm/a;2)断裂第四纪以来时空存在明显差异,时间上,早更新世断裂活动性较强,中更新世活动弱,晚更新世活动性增强,全新世以来活动性最强,空间上,全新世以来顺义断裂南段的活动性较北段强;3)顺义断裂现今仍具有一定蠕滑活动特征,并对浅地表部地裂缝发育具有明显的控制作用,这可能是顺义地裂缝发育的主要原因。
中文关键词:顺义断裂  第四纪活动性  地球物理探测  钻孔联合剖面  北京
 
Application of comprehensive geophysical-drilling exploration to detect the buried Shunyi active fault belt in Beijing
Author NameAffiliationE-mail
QI Bangshen Beijing Institute of Geo-exploration Technology qibangshen@126.com 
Feng Chengjun Key Laboratory of Neotectonic Movement Geohazard,Ministry of Natural Resources feng2010618@aliyun.com 
Tan Chengxuan Institute of Geomechanics,Chinese Academy of Geological Sciences  
Zhang Peng Institute of Geomechanics,Chinese Academy of Geological Sciences  
Meng Jing Institute of Geomechanics,Chinese Academy of Geological Sciences  
Sun Mingqiang Institute of Geomechanics,Chinese Academy of Geological Sciences  
Lei Xiaodong Beijing Institute of Geo-exploration Technology  
Shi Hanjing Beijing Institute of Geo-exploration Technology  
Yi Bing Institute of Disaster Prevention  
Yang Xiaoxiao ) Institute of Geology and Geophysics, Chinese Academy of Sciences  
Abstract:Shunyi fault is one of important buried faults in Beijing plain. The Quaternary activity and ground deformation of this fault are significant work for optimizing the pattern of land space development, and constructing disaster prevention and mitigation system in Beijing. As result of the buried active fault is complex, we used the controlled source audio-frequency magnetotelluric (CSAMT), shallow seismic reflection, high density resistivity and drilling exploration to detect its location, character and activity intensity. The results show that the trending of Shunyi fault is NE, dip direction is SE, and it is a normal fault. Meanwhile, Shunyi fault is an active fault, its vertical activity rate was 0.16mm/a since the Early Pleistocene, 0.07mm/a since the Mid-Pleistocene, 0.29 mm/a since the Late Pleistocene, and 0.54 mm/a since the Holocene in Beixiaoying town. However, in Sunhe town, its vertical activity rate was 0.07mm/a since the Mid-Pleistocene, 0.28 mm/a since the Late Pleistocene, and 1.90 mm/a since the Holocene. There were spatial and temporal disparities in the Shunyi fault activity since Quaternary. It activated strongly in the Early Pleistocene, however, activated weakly in the Middle Pleistocene. In the Late Pleistocene, The activity of Shunyi fault enhanced, and in the Holocene it had the strongest activity since Quaternary. It"s worth noting that south segment of Shunyi fault had stronger activity than north segment since the Holocene, and is still creeping nowadays, which may explain why the ground fissures appeared in Shunyi recently. Obviously, active faults control ground fissures in Shunyi area.
keywords:Shunyi failt  Quaternary activity  geophysical exploration  drilling exploration  Beijing
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