首页|Application of geophysical methods in fine detection of urban concealed karst:A case study of Wuhan City,China

Application of geophysical methods in fine detection of urban concealed karst:A case study of Wuhan City,China

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The construction of modem livable cities faces challenges in karst areas,including ground collapse and engineering problems.Wuhan,with a population of 13.74×106 and approximately 1161 km2 of soluble rocks in the urban area of 8569.15 km2,predominantly consists of concealed karst areas where occasional ground collapse events occur,posing significant threats to underground engineering projects.To address these challenges,a comprehensive geological survey was conducted in Wuhan,focusing on major karst-related issues.Geophysical methods offer advantages over drilling in detecting concealed karst areas due to their efficiency,non-destructiveness,and flexibility.This paper reviewed the karst geological characteristics in Wuhan and the geophysical exploration methods for karst,selected eight effective geophysical methods for field experimentation,evaluated their suitability,and proposed method combinations for different karst scenarios.The results show that different geophysical methods have varying applicability for karst detection in Wuhan,and combining multiple methods enhances detection effectiveness.The specific recommendations for method combinations provided in this study serve as a valuable reference for karst detection in Wuhan.

Ground Penetrating Radar(GPR)Electric Resistivity Tomography(ERT)Opposing-coils Transient Electromagnetic Method(OCTEM)Microtremor Array Measurements(MAM)Multi-channel Analysis of surface wave(MASW)Multi-source surface wave exploration(MSSW)Electroma

Dao-han Liu、Lei Wang、Lei Liu、Jun-jie Xu、Jian-qiang Wu、Pan Liu

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Wuhan Center,China Geological Survey,Wuhan,430205,China

Central South China Center for Geoscience Innovation,Wuhan,430205,China

Geophysical Exploration Brigade of Hubei Geological Bureau,Wuhan 430056,China

project of Chinese National Natural Science FoundationNational Key R&D ProgramNational Key R&D ProgramChina Geological SurveyChina Geological SurveyChina Geological Survey

421074852020YFC15124002018YFC800804DD20190282DD20221734DD20230323

2024

中国地质(英文)
中国地质调查局,中国地质科学院

中国地质(英文)

CSTPCD
ISSN:2096-5192
年,卷(期):2024.7(3)