延怀盆地黄土窑-土木断裂土木镇隐伏段活动特征及物探钻探证据  

Comprehensive geophysical-drilling exploration to detect buried Huangtuyao-Tumu active fault inTumuTown withinYanhuai Basin

作　　者：邢晓琴 杨肖肖 丰成君[2,3] 戚帮申 孟静 谭成轩[2,3] 王继明 邓亚虹[1] 宋焱勋 慕焕东 XING Xiaoqin;YANG Xiaoxiao;FENG Chengjun;QI Bangshen;MENG Jing;TAN Chengxuan;WANG Jiming;DENG Yahong;SONG Yanxun;MU Huandong(School of Civil Engineering,Chang’an University,Xi’an 710054,Shaanxi,China;Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China;Key Laboratory of ActiveTectonics and Geological Safety,Ministry of Natural Resources,Beijing 100081,China;Xi’an University ofTechnology,Xi’an 710048,Shaanxi,China;China United Engineering Corporation Limited,Hangzhou 310051,Zhejiang,China)

机构地区：[1]长安大学地质工程与测绘学院,西安710054 [2]中国地质科学院地质力学研究所,北京100081 [3]自然资源部活动构造与地质安全重点实验室,北京100081 [4]西安理工大学,西安710048 [5]中国联合工程有限公司,杭州310051

出　　处：《城市地质》2022年第4期468-476,共9页Urban Geology

基　　金：国家自然科学基金面上项目(41772275);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)”;全国地质灾害风险区划技术方法研究(DD20221738);“通州-石家庄活动构造带区域地质调查(DD20190317)”;陕西省教育厅科学研究计划专项项目(20JK0801)联合资助。

摘　　要：延怀盆地位于山西断陷活动构造带与张家口-渤海活动构造带的交汇地带,黄土窑-土木断裂是该地区重要的NWW向隐伏活动断裂之一,且穿越规划建设的京张高铁、官厅大桥重大工程,因此其平面展布、活动方式及第四纪活动性对该地区工程的科学规划、顺利建设与安全运营具有直接影响。针对黄土窑-土木断裂土木镇隐伏段复杂性特征,利用可控源音频大地电磁测深、浅层人工地震地球物理探测,以及钻孔联合剖面记录等方法,综合分析了黄土窑-土木断裂的活动特征,结果表明:黄土窑-土木断裂是由3条近于平行的次级断层(F_(4-1)、F_(4-2)、F_(4-3))组成的断裂带,以正断活动为主,整体走向N75°W,均为晚更新世活动断层。Yanhuai basin is located at the intersection of Zhangjiakou-Bohai structral belt and Shanxi graben zone,where exist complex tectonic deformation and a great many active faults.Among these active faults,Huangtuyao-Tumu fault is a significant factor for engineering design of Beijing-Zhangjiakou high-speed railway and Guanting bridge.In order to detect the location,character and activity intensity of hidden Huangtuyao-Tumu active faults in Tumu town,methods of shallow seismic reflection,controlled source audio-frequency magnetotelluric(CSAMT)and seismogeological section are used.The Huanghuayao-Tumu fault is a fault zone composed of three nearly parallel secondary faults(F_(4-1),F_(4-2),F_(4-3)).It is mainly normal fault activity with an overall strike of N75°W.All are late pleistocene active faults.

关 键 词：黄土窑-土木活动断裂 土木镇隐伏段 断裂活动性 地球物理探测 京张地区 

分 类 号：P542.3[天文地球—构造地质学] P315.2[天文地球—地质学]