02-MAR-1992 17:31
G.I.S.
+ 852 537 1540
P.09
demand of 45 million annual passengers and 70 aircraft gates (50 frontal and 20 remote gates). Support facilities including air cargo. aircraft maintenance and fuel storage facilities will have been expanded incrementally.
Phase II, To Year 2040
Phase II envisages expanded facilities to increase the airport's capacity to accom- modate 87 million annual passengers at 120 aircraft gates. which is the demand current- ly forecast for the year 2040.
To achieve this, a satellite concourse is planned west of the Phase I terminal com- plex, providing fan additional 50 aircraft gates. The passenger processing capability will be expanded by constructing a second terminal comple, cast of the first, compris- ing Terminals 3 and 4. The satellite con- course and second terminal will be served by extending the people mover system. Support facilites will be expanded in- crementally to the 2040 projected require- ments. A new access corridor to the airport from the New Territories has been proposed after 2010, to accommodate the expected increases in vehicular demand.
CIVIL ENGINEERING
The planning study determined the size and relative location of the components of the airport, and identified the facilities re- quired to enable the airport to operate safe- ly and efficiently. The civil engineering study prepared the detailed design and tender documentation for the site forma-
tion, and proposed how the infrastructure clements could most effectively be provided.
Infrastructure includes all structural and services elements of the airport, other than buildings. and the road, rail and ferry sys- tems providing access to the passenger ter- minal and other areas of the airport.
The Site
Site Preparation
The existing islands of Chek Lap Kok and Lam Chau will be cut down to an average level of about 6m to form approximately one quarter of the airport site. This will yield some 110 of the estimated 176 mil- lion cubic metres required to form the airport reclamation.
The bed of the sea. which presently com- prises the remainder of the site, is a thick layer of soft mud overlying an alluvium layer consisting of firmer muds. silts and sand of different thicknesses. The alluvium Jayer overlies bed rock which is generally granite, the upper layers of which are
weathered.
To determine the geology of the reclama- tion site and that of the potential sources of fill for the reclamation, termed borrow pits, about 650 marine borings, 170 land borings and 1,100km of seismic traverses were carried out.
In broad terms, there are two methods of constructing reclamation in areas where soft mud is present. The first is to remove the mud before filling with suitable material, whilst the other leaves the mud in
place and achieves acceleration of settle- ment by installing vertical drains.
After an exhaustive examination of the
merits of the two methods, the former was
selected. mainly on the grounds of its shorter construction time and smaller over-
all settlements.
Transition Fron Kai Tak
The transition and relocation of all opera- tions from the airport at Kai Tak to the new airport is a major and complex undertak- ing that requires extensive advance plan- ning, organization. coordination and staff training.
A Transition Task Force is proposed, responsible to the PAA and dedicated to the development of a transition plan, to ensure that the transfer is orderly and effi- cient. This organization should include representatives from the PAA. Civil Avia- tion Departmcht. other Government departments, atlines and other major
tchants.
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Advance Works Site Preparation
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