Ground cracks affect houses
LUNA, Apayao
-- A Mines and Geosciences Bureau geologist has recommended an almost
two-kilometer stretch in Poblacion, Kabugao
vacated and declared a danger zone after tension cracks with horizontal
and vertical displacements were found to have affected the ground and several
houses in the area.
Jelson
Edduba made the recommendation after conducting a geologic assessment with
members of the Cordillera Regional Disaster Risk and Reduction Management
Council led by Chairman OCD-CAR Regional Director Alberto Mogol, Gov. Eleanor
Bulut-Begtang and Kabugao Mayor Bensmar Ligwang following the heavy rainfall in
the province in the past weeks.
At
least 30 families are in danger of losing their homes because of this.
Edduba
said the area is experiencing instabilities in the form of creeping. The
unstable area has low stability since the shear stress has been reduced. It
will continue to move down slope over a long period of time or can be easily
remobilized. Additional factor considered is that the subject area is situated
on a steep slope.
The
area is also affected by the run-off of the Apayao River which flows directly
to the river wall or embankment where the houses are built. This worsens during
the continuous heavy rains causing the swelling of the river. The creeping is
aggravated by saturation.
He
clarified that the area is not affected by any fault which the residents
thought was affecting the ground movement.
Edduba
recommends that the area be declared as a danger zone so no construction of new
buildings and other structure should be allowed. Residents affected by the
ground instabilities should be relocated to a more stable area.
Moreover,
a systematic drainage system should be introduced in the area and should be
concreted and interconnected with the main drainage system. All surface water
should be diverted away from the site and appropriate embankment and concrete
lining along the Apayao River should be considered to prevent scouring and
instabilities along the riverbank.
Proper
monitoring of the area should be implemented including the residential areas
for possible development of ground stabilities as manifested by tension cracks,
tilted or bent trees or ground displacements.
Ligwang
said that the cracks in the area started showing up after typhoon Ompong last
year. There were small cracks on the ground then which overtime expanded and
opening larger portion of the ground and affecting houses. It was aggravated by
the recent heavy rains.
He
said families of the affected areas already vacated their homes and now in
evacuation centers or in their relatives (JDP/RMC- PIA CAR)
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