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You are here: Home / Portfolio / Pipeline Subsidence Study Using Geophysics

Pipeline Subsidence Study Using Geophysics

portfolio typeCase Historiespdf iconDownload this as PDFPosted on June 23, 2012

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Challenge

Mundell was contracted to examine an area experiencing subsidence along a section of pipeline crossing a former coal mining portion of central Indiana.

Action

To image the underlying soil and bedrock strata beneath the area of subsidence, Mundell collected, several two-dimensional resistivity imaging (2D ERI) profiles.

Results

The resistivity profiles indicated that the bedrock surface was undulating and weathered, and the data collected across this feature clearly indicates that a pit-like feature was developing into the bedrock, which appeared to have collapsed approximately 10-15 feet. Thus, geophysical data showed that the shallow subsidence along the pipeline was caused by deep, vertical soil movement, which was likely the result of a mine collapse.

2D Resistivity Profile

2D resistivity profile detailing the soil/bedrock interface, and showing the downward movement of the limestone bedrock cap located above a historical coal mine.

more information Learn about our related services (Geophysics) and industry solutions (Energy)

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Our Affiliations

- Midwestern States Environmental Consultants Association
- Environmental & Engineering Geophysical Society
- Professional Geologists of Indiana, Inc.
- National Ground Water Association
- American Societies of Chemical / Civil Engineers Engineers without Borders
- Association of Environmental and Engineering Geologists
- Indiana Association for Environmental Professionals
- Geological Society of American
- Indiana Circular Economy Initiative
- Economy of Communion
- Indiana Recycling Coalition

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