北京南苑-通县断裂北东段结构特征及第四纪活动性研究  

Determination of the northeast section of the Nanyuan–Tongxian fault in Beijing and research on itsQuaternary activity

作　　者：牛文治 何付兵 刘振华 崔玉斌 白凌燕 王安国 张悦泽 曹萌萌 周捷铭 NIU Wenzhi;HE Fubing;LIU Zhenhua;CUI Yubin;BAI Lingyan;WANG Anguo;ZHANG Yueze;CAO Mengmeng;ZHOU Jieming(Beijing Institute of Geological Survey,Beijing 100097,China;Beijing Municipal Staff Innovation Studio(Urban Geology,Active Structure and Monitoring),Beijing 100097,China;Development and Research Center of China Geological Survey,Beijing 100037,China)

机构地区：[1]北京市地质调查研究所,北京100097 [2]北京市市级职工创新工作室(城市地质、活动构造与监测),北京100097 [3]中国地质调查局发展研究中心,北京100037

出　　处：《地质力学学报》2023年第6期879-887,共9页Journal of Geomechanics

基　　金：北京市地质调查项目(PXM2018-158203-000014);北京市自然科学基金资助(8234070)。

摘　　要：南苑-通县断裂是北京凹陷与大兴凸起的边界断裂,也是1665年北京61/2级地震的主要控震断裂,其活动性对北京市土地规划利用和地质灾害预测有着重要意义。文章通过高精度重力、纵波和横波地震综合物探剖面以及钻孔联合地质剖面探测方法,调查研究了南苑-通县断裂带北东段的几何特征及其活动性。研究结果显示,南苑-通县断裂经过通州区平家疃村后转为近东西向,倾向北,倾角56°~75°;北东段新生代活动呈正断层属性,推测上断点埋深约为21.6 m,为晚更新世活动断裂。文章论证了南苑-通县断裂北东段的活动时代与中段、南西段不同,为首都地区国土空间规划及防灾减灾体系建设提供了重要的地质依据。The Nanyuan–Tongxian fault is the boundary fault between the Beijing depression and the Daxing uplift,also 61the primary seismic-controlling fault of the Beijing M earthquake in 1665.Its activity is of great significance to land 2 planning and geological disaster prediction in Beijing.Using high-precision gravity,longitudinal-wave and shear-wave seismic comprehensive exploration profiles,and composite borehole geological profiles,this study investigated the geometric characteristics and activity of the northeastern section of the Nanyuan–Tongxian fault.The results show that after passing through Pingjiatuan Village in Tongzhou District,the fault turns to a nearly east-west direction,trending north with a dip angle of 56°to 75°.The new activity in the northeastern section exhibits characteristics of a normal fault,with an estimated buried depth of about 21.6 m,indicating it as a late Pleistocene active fault.The findings demonstrate that the activity age of the northeast section of the Nanyuan–Tongxian fault differs from that of the middle and southwestern sections,providing crucial geological foundations for the spatial planning and disaster reduction systems in the Beijing region.

关 键 词：第四纪 南苑-通县断裂 钻孔联合剖面 综合物探剖面 断裂活动性 

分 类 号：P642.27[天文地球—工程地质学]