construction of the Oesterdam.
Model research shows that the mixing and
dispersion mechanisms can be studied
accurately. Similarly the influence of measures
taken to control the salinities, such as the use
of the Bath discharge sluice, reclamation of salt
water at the Krammer lock and the circular
flow of salt water via the Flakkee discharge
sluice, can also be checked.
Research into the consequences of postponing
the compartment works
A postponement of all or part of the
compartment works of one to four years so as
to alleviate the budget load of the Oosterschelde
project was under consideration in 1982. At
that stage half of the total cost of the
compartment works had already been spent.
All the consequences of such a decision had of
course to be studied beforehand. For this
purpose a policy analysis has been carried out,
together with a number of contingency analyses
into the consequences for shipping, fishery,
environment, water-management, safety, road
traffic, government budget, the building
industry and international relations.
Meanwhile the Minister has decided to only
postpone the construction of the Philipsdam
and for not more than one year.
The execution of the Krammer locks
This article takes a look back at one of the
largest hydraulic engineering projects which
has ever been undertaken as an assignment of
the Rijkswaterstaat: the Krammer locks in the
Philipsdam, two push barge locks with a
salt/freshwater separation system and two
yachting locks, the whole being provided with
bridging. The concrete work has lasted from
1978 until 1983 with a maximum workforce of
800 at a time. In the peak years of 1980 and
1981 150m3 of concrete was processed per
hour.
The work organisation is illustrated by means
of the system of the re-use of moulding. On an
average each moulding as re-used eleven
times.
Management and administration of the
Markiezaat
The realisation of the Delta Plan will eventually
cause the inundated land of the Markiezaat to
become a semi-stagnant fresh water area with
shore lands. One of the plans for the area is for
housing in order to accommodate the expanding
population of Bergen op Zoom. A peripheral
lake is also planned, possibly for recreational
purposes but at any rate as an area of nature
preservation.
A plan for management and administration has
already been set up for the initial phase of 1983
until 1986 which is to direct the course of
developments in the desired direction. In this
plan the whole area is divided into 14 regions,
each being assigned a separate function.
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