between block capacity and the amount of water in
| Revising block indexes
Calculating water requirement
the water pipe system at last.
Distributing the flow
Pipe net adjustment
Calculating design diameter
| |
| J
|
| J
Design dia <= current dia
|
| Adjusting overloaded pipe dia |
8
Diagnosing overloaded pipe dia |
/
| Pipe net isn't overloaded, it can work ernst
( Figure. 2 Flow chart of pipe net Optimization)
3.3.5 Result Display
After repeated optimizations of pipe net and
adjustment of pipe diameter , system rebuilds the
balance between block capacity and water pipe net .
System produces the parameter report tables and
prints it. At the same time, system can annotate the
information such as diameter, length, flow , and
the loss of pressure of water pipes (etc.) on the
graphics, then output it.
4. CASE STUDY
The of economic
construction and city scope. in Qingdao
rapid development
makes the original master plan unable to
completely satisfy the requirement of the
urban construction and management, thus it is
366
necessary to have a new range of revision of urban
master plan. School of remote sensing and
informatics in WTUSM developed a CAD system
based on GIS the
comprehensive plan in Qingdao, a very beautiful
beach city .Urban infrastructure is part of it,
including water, drain, rain, power, electricity, heat,
platform to support
gas (etc.) seven themes. The system frame is shown
in figure 3.
The CAD system can support most of the daily
businesses from the master plan, distinct plan, to
detailed plan. Moreover, it has advantages such as
good communication, easy operation, fast updating
and the precise maintaining at a quite high level.
Taking the data of industry area of Qingdao as an
example, the procedure of plan, optimization,
graphic of each thematic infrastructure need about
one day's time to be finished, the efficiency is
raised greatly.
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B4. Vienna 1996
