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引用本文:李巧灵,雷晓东,杨勇,杨全合,李晨,关伟,孙杰夫. 北京西郊玉泉山地区岩溶水强径流路径地球物理分析[J]. 中国地质, 2019, 46(2): 346-358.
LI Qiaoling,LEI Xiaodong,YANG Yong,YANG Quanhe,LI Chen,GUAN Wei,SUN Jiefu. A study of flow path in Yuquanshan area of western Beijing based on integrated geophysical technology[J]. Geology in China, 2019, 46(2): 346-358(in Chinese with English abstract).
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北京西郊玉泉山地区岩溶水强径流路径地球物理分析
李巧灵1, 雷晓东1, 杨勇2, 杨全合1, 李晨1, 关伟1, 孙杰夫1
1.北京市地质勘察技术院, 北京 100120;2.北京市水科学技术研究院, 北京 100048
摘要:
为研究北京西郊玉泉山地区岩溶水径流路径,需查明区内地层结构和断裂构造发育情况,故在玉泉山周边地区开展了综合地球物理勘查工作。完成1:25000面积性重力测量3670点,在重力数据解释推断成果基础上,有针对性地布设可控源音频大地电磁测深(CSAMT)剖面测量5.1 km及微动测深点4个。综合研究了基岩起伏形态和构造展布特征,新解释推断了10条可能存在的断裂构造。结合区域水文地质资料,对主要断裂的水文地质意义进行了分析,形成了玉泉山地区岩溶水强径流路径新的认识,部分成果与最新的同位素水化学研究成果一致。本研究为玉泉山泉恢复确定合理的回灌方案提供了地球物理依据。
关键词:  重力异常  微动测深  径流路径  玉泉山  综合地球物理
DOI:10.12029/gc20190211
分类号:P641
基金项目:国家重点研发计划课题(2016TFC0401404)、北京市科技计划课题(Z141100003614060)和中国地质调查局项目(12120114033901)联合资助。
A study of flow path in Yuquanshan area of western Beijing based on integrated geophysical technology
LI Qiaoling1, LEI Xiaodong1, YANG Yong2, YANG Quanhe1, LI Chen1, GUAN Wei1, SUN Jiefu1
1.Beijing Institute of Geo-exploration Technology, Beijing 100120, China;2.Beijing Water Science and Technology Institute, Beijing 100048, China
Abstract:
In order to investigate the features of strata configuration and fault structure and study the karst water flow path in Yuquanshan area of western Beijing, the authors carried out integrated geophysical survey in the surrounding area of Yuquanshan and completed regional gravity survey 107 km2 in area with 3670 measurement points. On the basis of the explanation of gravity anomaly, 5.1km controlled source audio-frequency magnetotellurics (CSAMT) profiles and 4 microtremor measurement points were carried out. According to these geophysical data, the basement relief and structure distribution were comprehensively studied, and 10 possible faults were interpreted and deduced. Combined with regional hydrogeological data, the hydrogeological significance of the main faults was studied. Then a new understanding of the strong karst water flow path in Yuquanshan area was obtained, which is consistent with the result of the latest isotope and hydrochemistry studies. This study provides the geophysical support for determining a reasonable recharge program for the restoration of Yuquanshan spring.
Key words:  gravity anomaly  microtremor survey  flow path  Yuquanshan  integrated geophysics