基于地热钻孔资料探讨北京黄庄-高丽营断裂的构造活动特征  

Characteristics of Tectonic Activity on the Huangzhuang—Gaoliying Fault in Beijing Based on Geothermal Drilling Data

作　　者：刘元章[1] 刘凯 刘久荣[1] 王树芳[1] 王丽亚[1] 崔一娇[1] 王旭[1] 孙赵爽 LIU Yuanzhang;LIU Kai;LIU Jiurong;WANG Shufang;WANG Liya;CUI Yijiao;WANG Xu;SUN Zhaoshuang(Beijing Institute of Hydrogeology and Engineering Geology,Beijing 100195,China;China Deep Exploration Center-SinoProbe Center,Chinese Academy of Geological Sciences,Beijing 100037,China)

机构地区：[1]北京市水文地质工程地质大队,北京100195 [2]中国地质科学院地球深部探测中心,北京100037

出　　处：《地震工程学报》2019年第6期1521-1528,共8页China Earthquake Engineering Journal

基　　金：中国地质调查局地科院基本科研业务课题(JYYWF20182004);北京市科技计划课题(Z141100003614060);国家自然科学基金(41831283)

摘　　要：根据地热深井的地层资料,绘制了横穿黄庄-高丽营断裂带的地质剖面图,对断裂带的深部构造特点进行了探讨。结合已有研究成果分析,发现黄庄-高丽营断裂曾经至少有过4次正、逆构造转换,具有反复震荡性。认为断裂的成因是区域板块开裂,后由于板块间的水平运动方向多次转变,形成拉张与挤压的反复转变,不断产生上盘的下降及逆冲运动,而呈现出构造活动的反复震荡特征,分析认为其断裂形成时代约在1.6~1.4亿年间的晚侏罗世(J3)。后来岩体的活动产生局部挤压和抬升,使得南、北两端上盘活动受限,产生掀斜抬升现象;而中段断块的活动自由度相对更大,根据水准监测当前中段上盘平均每年下降3 mm左右。结合构造特征及历史地震结果分析,认为应当注重对断裂带两侧板块的水平运移状况加以监测。Based on stratigraphic data from geothermal deep wells,a geological profile was plotted across the Huangzhuang—Gaoliying fault zone,and deep tectonic characteristics are discussed.Combined with existing data,research results showed that at least four transformations of the normal and reverse faults,with features of repeated concussion,occurred along the Huangzhuang—Gaoliying fault.It is held that the cause of the fault was the fracture of a regional plate,with subsequent,frequent horizontal movement of the plate changing many times,resulting in repeated transformations in tension and compression.Decline and thrusting motion of the hanging wall constantly occurred,also exhibiting features of repeated concussion.Formation age of the fault was about 106-140 million years b.p.,which was late Jurassic(J3).The later rock activity produced local extrusion and uplift,which restricted the activities of the south and north ends of the hanging wall,resulting in the phenomenon of uplift and tilt at one end.While movement of the middle segment of the upper plate was relatively more free,the average decline rate was about 3 mm per year.Based on analysis of the structural features and historical seismic records,it is suggested that the monitoring of this activity should focus on the horizontal movement of plates at both sides of the fault zone.

关 键 词：地热钻孔 板块运动 正逆构造转换 断裂形成时代 地震监测 

分 类 号：P548[天文地球—构造地质学]