中国地质调查2026，Vol.13Issue(4)：80-88,9.DOI:10.19388/j.zgdzdc.2024.302
综合物探方法在地表基质调查中的应用及效果
Application and effect of comprehensive geophysical methods in surface substrate survey:A case study of Guang'an area in Sichuan Province
摘要
Abstract
Geophysical exploration is a crucial technical approach in surface substrate survey,and different geo-physical response signatures are usually exhibited in different surface substrate layers.High-density resistivity method,the microtremor survey,the opposing-coils transient electromagnetic method,and ground penetrating radar were conducted in this study to evaluate the performance and applicability of various geophysical techniques in surface substrate investigation.The surface substrate geophysical survey was conducted in Guang'an area of Si-chuan Province,and the interpretation results were cross-validated using borehole logging data.The results are as follows.① The microtremor survey achieved the smallest deviation from borehole records in delineating surface substrate layering.② The opposing-coils transient electromagnetic method offered convenient field data acquisi-tion and reliable subsurface stratification.But,some detection blind zones existed in the shallow layers.③ Ground penetrating radar could effectively reflect interface boundaries through clear electromagnetic wave re-flection events,providing superior resolution and layering accuracy,but with limited penetration depth.④ High-density resistivity method provided a relatively large detection depth and clearly revealed variations in the profile's electrical structure.However,the stratigraphic interface boundary delineation accuracy was relatively limited.The findings could provide practical guidance and references for selecting appropriate geophysical explo-ration methods in future surface substrate surveys.关键词
应用效果/综合物探/地表基质/精细分层/广安地区Key words
application effects/comprehensive geophysical methods/surface substrate/precise stratigraphic clas-sification/Guang'an area分类
天文与地球科学引用本文复制引用
翟开静,谭军,李健,邢成,王国成,陈龙..综合物探方法在地表基质调查中的应用及效果[J].中国地质调查,2026,13(4):80-88,9.基金项目
中国地质调查局"西藏典型地区自然资源综合调查试点(编号:DD20230800104)""青藏高原多年冻土区地表基质摸底调查(西藏)(编号:DD20240101101)"和"成渝经济圈广安市地表基质调查(编号:DD20220864)"项目联合资助. （编号:DD20230800104）
