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The AAPG/Datapages Combined Publications Database
Fort Worth Geological Society
Abstract
ABSTRACT: Landslides Above the Walnut and Paluxy Formation?s Contact
By
1UTA,
Geology Department
2UTA, Civil & Env. Engineering Department
layers
would loose significant strength if the water
table in the underlying Paluxy sand rises and saturates them. Another possible
failure mechanism is a pore pressure increase in the Paluxy reducing effective
stress.
Laboratory investigations to determine the
mechanism(s) that induce the landsliding include Direct Shear and Plasticity
tests on undisturbed samples from the slide zones. Grain size distribution was
determined by sieve analysis, and X-ray diffraction was used to confirm the
presence of expansive clays. Data from various lab tests were used to generate
computer models
of possible natural conditions during the sliding to test the
various failure mechanisms.