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Mining Publication: High Stress Mining Under Shallow Overburden in Underground U.S. Stone Mines
Keywords: Horizontal stress National Institute for Occupational Safety and Health Pennsylvania
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: November 2002
Authors: AT Iannacchione, DR Dolinar, TP Mucho
Conference Paper - November 2002
Download PDF Document (0.36 MB)
NIOSHTIC2 Number: 20023444
In: Proceedings of the First International Seminar on Deep and High-Stress Mining. Nedlands, Australia: Australian Centre for Geomechanics, section 32, 2002; :1-11
The Chestnut Ridge Anticline is a prominent structure in southwestern Pennsylvania, USA. This structure has brought two economically valuable limestone formations to the surface, where they are easily accessible to room-and-pillar mining. Nine active crushed stone quarries, an underground research facility, and one industrial facility currently operate along the linear trend that represents the axis of the anticline. The National Institute for Occupational Safety and Health (NIOSH) has identified significant variation in levels of horizontal stress within relatively short distances at shallow overburdens along the anticline. At one quarry, the horizontal stress is high enough to shear strata with a modulus of approximately 77 Gpa. Conversely, zones of extension were observed in parts of another quarry, indicating very low horizontal stress conditions. This study found that high levels of horizontal stress are to be expected in this very stiff rock formation and that local geologic and topographic structures are capable of altering the magnitude and possibly the orientation of the horizontal stress field.
Image of publication High Stress Mining Under Shallow Overburden in Underground U.S. Stone MinesConference Paper - November 2002
Download PDF Document (0.36 MB)
NIOSHTIC2 Number: 20023444
In: Proceedings of the First International Seminar on Deep and High-Stress Mining. Nedlands, Australia: Australian Centre for Geomechanics, section 32, 2002; :1-11
See Also
Advance and Relieve Mining: A Method to Mitigate the Effects of High Horizontal Stress on the Mine Roof
Effect of the Dip and Excavation Orientation on Roof Stability in Moderately Dipping Stone Mine Workings
Horizontal Stress and Longwall Headgate Ground Control
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Performance of Roof Support Under High Stress in a U.S. Coal Mine
Reservoir Rock Properties of Coal Measure Strata of the Lower Monongahela Group, Greene County (Southwestern Pennsylvania), from Methane Control and Production Perspectives
Safer Mine Layouts for Underground Stone Mines Subjected to Excessive Levels of Horizontal Stress
USBM Health and Safety Legacy Continues Under NIOSH
Variation of Horizontal Stresses and Strains in Mines in Bedded Deposits in the Eastern and Midwestern United States
Page last reviewed: July 16, 2015
Page last updated: July 16, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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