May/June 2024 - 87

FEATURE ARTICLE
Rapid Response of Emergency
Landslide Failures in Kentucky
&
SPECIAL
ISSUE
Road repair in progress
Spring in the state of Kentucky brings
every climate possible within a matter
of weeks. Typically, the initial thaw
from winter occurs followed by flash
flooding rain. The heat is kicked up for a
few random days just for the semi-dried
soil to be washed away by another
torrent of rainfall. Judging by the last
few years, a round of tornadoes can also
be expected to make an appearance.
Haunting fog will plague the hollers in
the evening, veiling the missing
roadway washed away earlier that day.
This creates an interesting obstacle
course of dodging cliffs, cones, cars and
the occasional ATV. Of course, a threat is
posed to all the residents and travelers
of the failed roadways. These rural areas
do not have the luxury of multiple
access roads to their homes. Roads with
a major failure preventing even a single
line of traffic to pass through are
deemed emergency projects and are
prioritized to begin construction. This
sequence of events took place in the
early part of 2023 on a rural road in
Harlan County, Kentucky, and this case
study describes the processes and
methods that allowed rapid response for
reconstruction of the failed roadways.
Background
The majority of soil stabilization that
occurs in Kentucky resides along the
eastern border of the Appalachian
Mountains. These failures include
AUTHORS Rebecca Hurley, E.I.T., GeoStabilization International
DEEP FOUNDATIONS * MAY/JUNE 2024 * 87
rockfall, erosion and landslide activity.
Preventative care is preferred and
provided when signs of movement are
minor. The major failures can be avoided
by pinning the slip area along the slide
plane using lateral soil nails before the
failure progresses too far. These nails
stabilize the slope by passing through
the slide plane and lodging in competent
material. The competent material,
preferably rock, provides the bond
strength needed when the nail is put in
tension and halts any major movement
of the slope. Some settlement can still be
expected after initial construction due to
the system becoming fully engaged and
surface expressions of this settlement
are repaired by patching the roadway.
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May/June 2024

Table of Contents for the Digital Edition of May/June 2024

TOC
May/June 2024 - Intro
May/June 2024 - 1
May/June 2024 - 2
May/June 2024 - TOC
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