Geoscience Reference
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Grouting or void filling by cementing materials or chemical and development of
concrete step like structure along
first order drainage in Paglajora sinking zone
and Nurbong sinking area that may reduce the seepage and permeability and
also can reduce the pore water pressure within the soil.
Development of arti
cial drainage upslope may act to prevent the ingress of
water into the slided area and that can be introduced in Lower Paglajhora,
Gayabari, Tindharia and Shiviter.
A certain type of
first growing vegetation can minimize pore space within the
soil and moderates in
ltration characteristics, controls run-off and reduce soil
moisture condition through transpiration. This type of process is to be ensured in
Shiviter, 14 Miles Bustee, Mahanadi and Sepoydhura landslide area.
Unstable Slope coverage by plastic/synthetic cloths in small landside scar can be
more effective mechanism for reducing rain water percolation and pore water
pressure at Paglajhora, Shiviter Landslide (on the way to Shiviter T.E.),
Tindharia Railway. Station. Landslide, Sepoydhura T.E. landslide etc.
Chunam Plaster mechanism could be applied at some places i.e., Chunabhati,
Mahanadi, Tindharia and Paglajhora where slope surface is exposed to surface
run-off and rainfall. This technique can prevent slope from erosion and water
in
ltration and restrict pore water pressure and also enhance slope stability
condition by increasing the soil strength. It covers the slope surface with a hard
water proof shell (Fig.
8.12
).
In Paglajhora and Tindharia care should be taken in the construction of drainage
measures to ensure that pore water pressure is not increased.
Fig. 8.12 Mechanism of Chunam Plaster to protect a soil slope
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