publication . Other literature type . Article . 1995

Analysis of Rainfall-Induced Debris Flows

Nicholas Sitar;
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  • Published: 01 Jul 1995
  • Publisher: American Society of Civil Engineers (ASCE)
Abstract
Rainfall-induced debris flows are flow failures in residual and colluvial soils initiated by a reduction of confining stress as a result of pore-water pressure rise during or following periods of intense rainfall. To establish appropriate stability analysis procedures, the behavior of soil from a debris flow source area is investigated. Constant-shear-drained triaxial tests, tests that mimic the field stress path, and anisotropically consolidated undrained triaxial tests performed at the in-situ stress level indicate that undrained loading is a prerequisite for flow failure. Mechanisms of stress transfer are proposed to explain how the initially drained deformat...
Subjects
free text keywords: Geotechnical Engineering and Engineering Geology, General Earth and Planetary Sciences, General Environmental Science
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