Engineering Geophysics

Anna Bondo Medhus, Lone Klinkby, Anna Bondo Medhus, Lone Klinkby

• Publisher: CRC Press
• Year: 2022
• Print ISBN: 9781032026886
• eBook ISBN: 9781000779783
• Edition: 1
• Topic: Physical Sciences
• Subtopic: Geology & Earth Sciences

Engineering Geophysics connects onshore geotechnical engineering challenges to the geophysical methods that may be applied to solve them. Unknown geological conditions are a risk in construction projects, and geophysical information can help to identify those risks. The book answers questions on how, why, and when the individual and combined methods provide the results requested. Flowcharts guide the reader to geophysical methods that can be applied for various engineering challenges, and the solutions are illustrated with practical case histories.

The book is intended mainly for geotechnical engineers and geologists but also for geophysicists or managers in need of an overview or brushup on geophysical methods and their practical applications. In addition, it can be used by educational institutions in courses both for geotechnical engineers and geologists.

Table of contents

• Cover
• Half Title
• Title
• Copyright
• Contents
• Editors
• List of contributors
• Preface
• Acknowledgments
• 1 Introduction
• 2 Scope of work
• 3 Relationship between geotechnical and geophysical methods
• 4 Gravimetric method
• 5 Magnetometry method
• 6 Direct current resistivity methods
• 7 Electromagnetic methods
• 8 Ground penetrating radar
• 9 Reflection seismic methods
• 10 Seismic refraction methods
• 11 Surface wave methods
• 12 Case: mapping potential unexploded ordnance (UXO)
• 13 Case: geophysical investigation to delineate landfill
• 14 Case: 3D GPR in the inner yard at Frederiksborg Castle
• 15 Case: mapping of utilities when developing at an old coal storage facility
• 16 Case: near-surface electromagnetic survey to support the design of urban development plans
• 17 Case: archaeological investigation to identify a Romano-British farmstead using magnetic gradiometry
• 18 Case: integrated geophysical survey to locate buried structures
• 19 Case: total field magnetometry to locate buried foundations
• 20 Case: utility mapping with GPR at Copenhagen Harbour
• 21 Case: thickness of peat and depth to bedrock for road construction using ground penetrating radar
• 22 Case: multidisciplinary geophysical investigation for a new railway track in Norway
• 23 Case: road maintenance and ground frost
• 24 Case: depth to bedrock detection by integration of airborne EM data with sparse geotechnical drilling data for early phase road alignment
• 25 Case: delineation of aggregates gravels, sands, and silts using electrical resistivity tomography
• 26 Case: delineation of material type for use in ready-mix concrete
• 27 Case: mapping railroad ballast and geology using ground penetrating radar
• 28 Case: assessing loose soils for tower cable anchors using electrical resistivity
• 29 Case: delineation of soft soils and bedrock depth using integrated methods
• 30 Case: high-definition bedrock depth and conditions for urban construction project site evaluation in Switzerland using seismic refraction with combined GRM and tomographic approach
• 31 Case: paleo-channel investigation for seepage pathway potentials
• 32 Case: near-surface electromagnetic survey to support the design of climate adaptation in urban development plans
• 33 Case: geophysical investigation of slope stability using electrical resistivity tomography, seismic refraction, and surface waves
• 34 Case: integrated geophysical investigation to map a landslip
• 35 Case: mapping of quick clay risk by electrical resistivity tomography (ERT)
• 36 Case: quick clay volume delineation based on AEM resistivity, geotechnical soundings, and lab samples
• 37 Case: depth to bedrock and weak zone detection for tunnel design under water passages
• 38 Case: 3D model of depth to bedrock for a new train tunnel under the capital of Norway
• 39 Case: screening for ground risk ahead of tunnel design and construction activities
• 40 Case: geometrical complex ground model for large industrial construction sites: ultra-high-resolution with shear waves – qualification flow and application
• 41 Case: identifying weakness zones and geological boundaries across tunnel alignments using airborne electromagnetics
• 42 Case: delineation of soil type, dam leakage, underground voids, and water flow in tunnels
• 43 Case: pre-investigations for horizontal directional drilling in Copenhagen
• 44 Case: mapping depth to bedrock along a planned cable route
• 45 Case: mapping bedrock profiles for cable landings using seismic refraction and surface waves (MASW)
• 46 Case: lake bottom investigations with ground penetrating radar (GPR)
• 47 Case: pre-investigations for pipeline crossing of a stream
• 48 Case: delineation of palaeokarst features under a proposed tailings facility using ERT, seismic refraction, and micro-gravity
• 49 Case: the identification of leaks in tailings storage facility impoundment dam walls using ERT and IP
• 50 Case: groundwater vulnerability assessment for new motorway using ERT
• Index