Research Article
Feb 1972
Failure of Colluvial Slope
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VIEW THE REPLYAuthors: James V. Hamel, AM.ASCE, and Norman K. FlintAuthor Affiliations
Publication: Journal of the Soil Mechanics and Foundations Division
Volume 98, Issue 2
Abstract
Interstate Route 279 crosses the Ohio River 9 miles northwest of Pittsburgh, PA, and continues northward along Kilbuck Run tributary valley. One section of the highway passes through a zone of colluvium on the wall of the tributary valley. When construction of this section began in 1968, several slides were initiated along ancient landslide surfaces in the colluvium. The relationship among the landslides, a weak claystone zone in the stratigraphic sequence (the Pittsburgh Redbeds), and the valley wall topography are analyzed. One typical landslide which was studied in detail is described. Friction angles of 12.5° to 15.5° were calculated for limiting equilibrium of the failure mass and residual friction angles of 13.5° to 16° were determined from repeated direct shear tests on failure surface materials. It is concluded that the average shear strength mobilized along the failure surface material. This residual strength condition is attributed to the shearing displacement of the ancient landslide.
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Published In
Journal of the Soil Mechanics and Foundations Division
Volume 98 • Issue 2 • February 1972
Pages: 167 - 180
Copyright
© 1972 American Society of Civil Engineers.
History
Published in print: Feb 1972
Published online: Feb 12, 2021
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Authors
Affiliations
James V. Hamel, AM.ASCE
Asst. Prof. of Civ. Engrg., South Dakota School of Mines and Technol., and Prin., Hamel Geotech. Consultants; Rapid City, SD
Norman K. Flint
Prof. of Geology; Univ. of Pittsburgh, Pittsburgh, Pa.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.