Site investigation

This episode explores the crucial role of site investigation in engineering geology. Building upon our understanding of engineering geology, natural hazards, landslides, soil mechanics, rock mechanics, and geological disposal, we will examine the various stages and techniques involved in assessing ground conditions before construction. This episode aims to provide a comprehensive overview of how site investigation helps identify potential geological hazards and engineering challenges, without delving into specific applications like hydrogeology, which will be covered later. We will discuss the importance of desk studies, geophysical surveys, borehole drilling, and laboratory testing in gathering information for informed decision-making in engineering projects.

Check your understanding

These are the same multiple-choice questions you will see in the Quiz section after you listen to the episode. Use them here to preview or review the answers.

What is the primary purpose of site investigation?

  1. To predict earthquakes
  2. To monitor volcanic activity
  3. To assess ground conditions before construction
  4. To study groundwater flow
  5. To analyze air quality
  6. To identify fossils

What does the desk study stage of site investigation involve?

  1. Reviewing existing information
  2. Conducting geophysical surveys
  3. Drilling boreholes
  4. Laboratory testing
  5. Excavating the site
  6. Building a model of the site

What are some examples of geophysical survey techniques used in site investigation?

  1. Seismic refraction
  2. Electrical resistivity
  3. Ground-penetrating radar
  4. Chemical analysis
  5. Archaeological excavation
  6. Remote sensing

Why is borehole drilling important in site investigation?

  1. To extract groundwater
  2. To install underground utilities
  3. To obtain soil and rock samples
  4. To monitor ground movement
  5. To measure air pressure
  6. To create underground storage

What information does laboratory testing of soil and rock samples provide?

  1. Shear strength
  2. Compressibility
  3. Permeability
  4. Density
  5. Temperature
  6. Humidity

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