Under Ground Cable
Open Cut Vs HDD
Kelaniya – Paliyagoda 1.8km 132kV under Ground cable
Open Cut Cable Laying
Horizontal Directional Drilling(HDD)
Horizontal Directional Drilling(HDD)
Outage time and area
Open
Trenching
HDD
Blockage of one carriage way during
night time only
Blockage of around 6m width of the
road for a period of 5-6 weeks
continuously
One lane blockage during night for 72 Minimum 6 places along the route
weeks.
and entirely 30-36 weeks period
Cable Protection
Open
Trenching
HDD
Concrete protection cover over the
HDPE pipe.
No Protection for cable from
accidental damages.
Danger marking by Yellow warning
tape over the area.
No marking of danger
Low Risk for Human Life
High Risk for Human life
Under Ground Cable Trial
Pit Excavation
Kelaniya – Paliyagoda 1.8km 132kV under Ground cable
Under Ground Cable
Road Width
Kelaniya – Paliyagoda 1.8km 132kV under Ground cable
Small Size Rig Used for Fiber Optic
Cables