| 广东省潼湖生态智慧区浅层地球物理探测与地层物性分析 |
| |
| 引用本文： | 张晓波,王成善,王志辉,李海龙,李伟荣,王强茂.广东省潼湖生态智慧区浅层地球物理探测与地层物性分析[J].地质学报,2019,93(11):2935-2946. |
| |
| 作者姓名： | 张晓波 王成善 王志辉 李海龙 李伟荣 王强茂 |
| |
| 作者单位： | 1) 中国地质大学(北京)，北京，100083; 2) 中国地质科学院，北京，100037,1) 中国地质大学(北京)，北京，100083,2) 中国地质科学院，北京，100037,2) 中国地质科学院，北京，100037,3) 广东省地质局第七地质大队，广东惠州，516008,2) 中国地质科学院，北京，100037 |
| |
| 基金项目： | 本文为中国地质调查局地质调查项目（编号：DD20169611和DD20190287）和中国地质科学院基本科研业务费项目（编号：YWF201906）联合资助的成果。 |
| |
| 摘 要： | 地质灾害、活动断裂、特殊岩土体和古河道等是影响城市浅层地下空间开发安全的主要地质问题,对于这些地质问题的探测主要采用地球物理无损检测方法。潼湖生态智慧区是国家生态文明建设示范区和惠州智慧城市地下空间开发中的重要区域,浅层地球物理探测与地层物性分析为潼湖生态智慧区城市发展及地下空间开发利用提供详细的地质、岩土和地球物理数据,是构建该地区地下空间模型的必备要素。虽然目前已经开展了针对本区域的基础地质探测研究工作,然而服务于精细地质结构与地层划分的综合地球物理研究还处于空白。针对浅层地下空间探测精细程度低和传统探测方法分辨率有限的问题,本文综合利用浅层反射波地震方法、混合源面波S波速度成像方法、三分量谐振波阻抗比值方法以及综合测井方法对该地区浅层地下空间(200m)进行了高精度地层划分和断层展布精细解释。在浅层地震反射波方法划分厚层和大尺度断层的基础上,利用主动源和被动源微脉动阵列法获得更加精细的浅层地层和构造特征,采用三分量地震频率谐振方法识别浅层土壤层分层,弥补了单一方法在不同深度范围上的探测信号低精度缺点,探讨了潼湖地区地层与地球物理的响应特征,构建了详实的地层物性和地球物理参数关系,为后续的建模提供基础数据。
|
| 关 键 词： | 地下空间，地球物理探测，面波，速度，物性 |
| 收稿时间： | 2019/5/8 0:00:00 |
| 修稿时间： | 2019/9/5 0:00:00 |
Shallow geophysical exploration and stratigraphic properties analysis of the Tonghu ecological smart zone, Guangdong Province |
| |
| ZHANG Xiaobo,WANG Chengshan,WANG Zhihui,LI Hailong,LI Weirong and WANG Qiangmao.Shallow geophysical exploration and stratigraphic properties analysis of the Tonghu ecological smart zone, Guangdong Province[J].Acta Geologica Sinica,2019,93(11):2935-2946. |
| |
| Authors: | ZHANG Xiaobo WANG Chengshan WANG Zhihui LI Hailong LI Weirong and WANG Qiangmao |
| |
| Institution: | 1) China University of Geosciences (Beijing), Beijing, 100083;2) Chinese Academy of Geological Sciences, Beijing, 100037,1) China University of Geosciences (Beijing), Beijing, 100083,2) Chinese Academy of Geological Sciences, Beijing, 100037,2) Chinese Academy of Geological Sciences, Beijing, 100037,3) Seventh Geological Brigade of Guangdong Geological Bureau,Huizhou, Guangdong, 516000 and 2) Chinese Academy of Geological Sciences, Beijing, 100037 |
| |
| Abstract: | Geological disasters, active faults, special geotechnical bodies and ancient rivers are the main geological problems affecting the development of shallow underground space in cities, and non destructive geophysical testing methods can be used for the detection of these geological problems. Tonghu ecological smart zone is an important area in the development of national ecological civilization construction demonstration zone and Huizhou smart city underground space. Shallow geophysical exploration and stratigraphic properties analysis provide detailed geological, geotechnical and geophysical data for the urban development and underground space utilization of the Tonghu ecological smart zone, which is an essential element for constructing the underground space model of the area. Although basic geological exploration research has been carried out for the region, comprehensive geophysical research on fine geological structures and stratigraphic divisions is still in the blank. In order to solve the problem of low level of fine detection in shallow underground space and limited resolution of traditional detection methods, the shallow reflection wave seismic method, S wave velocity structure imaging method of mixed source surface wave, three component resonance wave impedance ratio method and comprehensive logging method are used to perform high precision stratigraphic division and fine interpretation of fault distribution for shallow underground space (200 m) in the area. Based on the shallow reflection wave seismic method to divide thick and large scale faults, the active source and passive source surface wave method are used to obtain more detailed shallow stratum and structural features, and the three component seismic frequency resonance method is used to identify the shallow soil layer, which compensates for the low accuracy of the detection signal of a single method over different depth ranges. The response characteristics of stratigraphy and geophysics in the Tonghu area are discussed, and the detailed relationship between stratigraphic properties and geophysical parameters are constructed, which provides basic data for subsequent modeling. |
| |
| Keywords: | underground space geophysical exploration surface wave velocity physical properties |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地质学报》浏览原始摘要信息 |
| 点击此处可从《地质学报》下载免费的PDF全文 |
|
