HULHULE-MALE’ BRIDGE PROJECT

EIA for the proposed Hulhule-Male’ Bridge Project
Figure 2.16 Self-elevating mobile platform
The piling method will adopt either air-lift reverse circulation drilling or the rotary drilling.
Considering that the pile casing is inserted into base rocks, it is planned to use clean water drills
in order to avoid the environmental pollution.
Once the foundation is completed, the main structure will be hoisted and connected. Most of the
remaining works will involve concrete casting on-site as described above.
2.4.3 Construction method of land connection
Constructing the landing areas will involve the following activities:
(1) Site clearing: All existing vegetation within the project foot print will be removed or
relocated; the existing pavement and road surface will be demolished or disassembled; a
temporary drain ditch and settling pond will be established on the road side; and the road
area will be backfilled and levelled to the required level.
(2) Base treatment: Including levelling, compacting and sub grading.
(3) Surfacing and pavement construction
2.4.4 Dredging and reclamation method
Dredging at the borrow site will be undertaken by an excavator mounted on a sand bed. The sand
bed will be constructed from the existing lagoon material. Excavated material will be placed on
to a barge and transported to the designated sites. The barge is expected to have a capacity of
3000-5000 cbm and will be towed by a tugboat.
The barge lading area for Hulhule Island is the proposed works site which can be directly
accessed from the lagoon. Unloading at the site will be undertaken by an excavator. Trucks will
carry the material to the reclamation site and loaders will be used to distribute the material.
Given the strong wave conditions on the southern tip of Hulhule Island, sand filled geobags may
be placed before infilling. Shore protection works will begin simultaneously to minimise sand
loss.
Prepared by: CDE Consulting & China Shipping Environment Technology Page| 32