The Reaction of Embankment to Longwall Mining Subsidence
Publication: IFCEE 2021
ABSTRACT
Over the last 50 years, full extraction longwall mining has become an efficient and safer means to remove coal from underground deposits. When enough coal is extracted, a subsidence basin forms on the surface, which causes the ground to drop and induces strains and deformations on the surface. In the winter of 2019, a longwall panel that averaged a depth of 675-ft undermined a section of Interstate 70 (I-70) in Pennsylvania, causing as much as 5-ft of vertical subsidence. As the highway was undermined, the pavement, slopes, and embankments were monitored for signs of failure using regular surveys, instruments, and observations.
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IFCEE 2021
Pages: 42 - 54
Copyright
© 2021 American Society of Civil Engineers.
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Published online: May 6, 2021
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