中国地质2023，Vol.50Issue(6)：1691-1704,14.DOI:10.12029/gc20200509003
地球物理方法在城市地质结构精细化探测中最优方法组合研究——以成都市天府新区为例
The application effect of geophysical method in fine exploration of urban geological structure and study of optimal combination method:A case study of Tianfu New Area in Chengdu,Sichuan Province
摘要
Abstract
This paper is the result of urban geological survey engineering. [Objective]Tianfu New Area(TNA)of Chengdu is characterized by a typical red stratigraphy in southwest China,including interbed sedimentary rocks of mudstone,silty mudstone,argillaceous siltstone and sandstone.The difference of physical property among the above rocks is minor.Clarifying the shallow geological structure by geophysical method is favor for constructing the fine three-dimensional geological model of TNA.[Methods]This paper attempts to image fine geological structure in 4 typical sites of TNA through a variety of new and traditional geophysical methods.[Results]Ground penetrating radar(GPR)and three component frequency resonance(TCFR)have higher imaging resolution than that of shallow seismic exploration(SSE),electrical resistivity tomography(ERT),opposing coils transient electromagnetic(OCTEM)and microtremor exploration(ME).Urban noise tends to affect field data quality in SSE,TCFR and ME,but not in GPR and OCTEM.Fine geological structure from shallow to deep depth can be obtained by method assembly for GPR,TCFR,ERT,OCTEM,SSE and ME.[Conclusions]Under comparing and analyzing the detection depth,resolution,anti-urban noise level,construction efficiency,and economic cost of the above methods,the optimal geophysical method assembly to detect fine geological structure with different construction conditions and exploration depths in TNA of Chengdu is summarized.关键词
地球物理方法/地质结构/最优方法组合/精细探测/城市地质调查工程/成都/四川Key words
geophysical methods/geological structure/optimal geophysical method assembly/fine geophysical detection/urban geological survey engineering/Chengdu/Sichuan Province分类
天文与地球科学引用本文复制引用
李华,王亮,刘胜,夏友刚,李颖,杨涛,王东辉,张伟,杨剑,王桥,廖国忠,王春山,韩浩东,席振铢..地球物理方法在城市地质结构精细化探测中最优方法组合研究——以成都市天府新区为例[J].中国地质,2023,50(6):1691-1704,14.基金项目
中国地质调查局项目(DD20189210、DD20190033)和国家自然科学青年基金(41804144)联合资助. Supported by the projects of China Geological Survey(No.DD20189210,No.DD20190033)and National Natural Science Foundation of China(No.41804144). （DD20189210、DD20190033）
