SYNOPSIS

As part of Rancangan Tebatan Banjir Sg. Bunus, Wilayah Persekutuan Kuala Lumpur, the Department of Irrigation and Drainage (DID), Wilayah Persekutuan has implemented a project to mitigate flooding issues in the Sg. Bunus catchment area. The main objectives of the project are to protect lives; safeguard the health and safety of residents in the community; reduce damages to structures due to flooding; and to ensure a sustainable future for the community. Both soft-engineered features and structural measures have been considered in the project, which include storage ponds, in-stream storage, planting of vegetations, tunneling, underground storage tanks and pumping stations.

A twin box culvert would act as a vital connection between Sg. Bunus and Sg. Klang acting as a control-gate structure that hoist force main drainage pumping system that lifts low water level from Sg. Bunus to high water level of Sg Klang.

In order to construct a cast-in-situ twin box RC tunnel (serving later as a pump gate drainage culvert) within the existing Reinforced Soil (RS) wall highway embankment, a temporary pipe-roofing system (Microtunelling) is introduced for tunnel excavation.

The first of its kind in the world pipe-roof support tunneling through RS wall embankment has been designed for the above purpose. The system encompasses the insertion of a series of horizontal contiguous steel pipes (600mm dia.) at shallow depth beneath and through the existing highway RS wall embankment by hydraulic steel pipe jacking, including jacking in the vertical directions.


SAFETY REMINDER:
•  Participants shall be well-equipped with their own PPE equipment,
    i.e. safety helmet, safety vest and safety boots in order to be allowed access into the site.


NOTE
• The visit is strictly limited to 30 participants registered on a first-come, first-served basis.