煤田地质与勘探2025，Vol.53Issue(10)：225-232,8.DOI:10.12363/issn.1001-1986.25.03.0166
胶州湾填海区三维电阻率模型构建与地质解译
Building and geological interpretation of a 3D resistivity model for the reclamation area of the Jiaozhou Bay
摘要
Abstract
[Background]With the advancement in smart city construction in China,the development and utilization of urban underground space have become a focal point.Geophysical methods,as a crucial technical means for under-ground geological structure exploration,face new challenges when applied to complex exploration environments in urb-an areas.[Objectives and Methods]To address issues in underground space exploration in the coastal area of Qingdao,this study investigated the reclamation area along the eastern coast of the Jiaozhou Bay.Using a detection technique that combined the transient electromagnetic method(TEM)using a conical source and high-density resistivity method,this study constructed a 3D resistivity model through multi-source data fusion.This model revealed the stratigraphic struc-tures and the extent of fracture zones within the study area,demonstrating the technical advantages of the novel TEM method with a conical source when applied to complex urban environments.[Results and Conclusions]A three-layer electrical structure was revealed in the study area:an artificial fill layer,the Quaternary sedimentary layer,and bedrock.A clear bottom interface was observed in the artificial fill layer.Data processing and geological interpretation contrib-uted to the successful identification of unfavorable geological bodies such as water-rich anomalous zones and structur-ally fractured zones,with the former exhibiting laterally continuous resistivity variation bands and the latter character-ized by dislocated and concave contours.The varying degrees of bedrock weathering influenced the developmental de-grees of faults and fracture zones,especially near the Cangkou fault.The established integrated geophysical exploration system can effectively identify the spatial distribution of strata and the characteristics of geological structures,providing a new technical pathway for achieving"transparent"urban underground space.The results of this study offer a critical geological basis for engineering applications such as metro tunnel siting and underground pipeline network planning.关键词
地质结构/圆锥型/瞬变电磁法/围填海区/地下空间Key words
geological structure/conical source/transient electromagnetic(TEM)method/reclamation area/under-ground space分类
地质学引用本文复制引用
于鹏,赵明月,杨海燕,李文宇,田健,闫后振,张超..胶州湾填海区三维电阻率模型构建与地质解译[J].煤田地质与勘探,2025,53(10):225-232,8.基金项目
中央高校基本科研业务费专项资金项目(2024KYJD2009) （2024KYJD2009）
国家自然科学基金项目(42374082,41974086) （42374082,41974086）
