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Hydraulic Research Laboratory

The hydraulic laboratory was officially opened by His Excellency Governor Sir Andrew Caldecott on May 21,1938

Hydraulic Research Laboratory consist of

  • Hydraulics Scalar model laboratory
  • Instrument Section
  • Workshop
  • Photography Section

Functions of Hydraulics Research Laboratory

  1. Construction of hydraulic scalar models including installation of measuring apparatus and scientific equipment and carrying out model tests, tabulating test results, preparing diagrams and reporting.
  2. Seepage studies in canal distribution systems.
  3. Monitoring sea-outfall behavior.
  4. Collection of sediment transport data from canals, streams and rivers.
  5. Calibration of sluices/outlets and providing rating curves.
  6. Fabrication, installation and calibration of measuring devices for flow measurement.

About the Hydraulic Research Model Laboratory

  • The Hydraulic research Laboratory has been in continuous operation since it was established in 1938by Irrigation Department. The Laboratory was moved to its present location at No.34,Jawatta Road, Colombo 5 in 1940.
  • The infrastructure available includes
    • Concrete flume for sectional model (25m x1.5m x1.5m),
    • Tiltable glass flume (12 m test length) with separate water circulation system
    • 2 buildings for the flumes
    • Constant overhead tank (8.5 m above ground) with incorporated pump house (4 electric pumps and 1 diesel pump (Stand –by installation)
    • a sub-surface tank.
    • Electrical Sub Station (250 kVA) and Electrical installation for test facilities.
  • Instrumentation
    • All the instruments required to carryout model studies are available with the laboratory. These include Discharge measuring weirs, point gauges, bridges, current meters, manometers etc. The workshop and instrument division which is under the Hydraulics Laboratory provides repair facilities for all these instruments.

A non-interruptive flow water supply and ample land area makes the laboratory unique among hydraulic laboratories in the island. The laboratory occupies 12,500 m2 of open land with necessary water supply system consists underground pressure pipe lineswith hydrant chambers. Water for experiments is drawn from ground water at rates from a trickle flow up to 760 liters per second.

The laboratory has had a major impact on irrigation and water conservation engineering and is recognized nationally as a significant contributor of sound design criteria for irrigation and water conservation structures and channels.

Mission Statement

The Hydraulic Research Laboratory conducts research to:

  • Develop criteria for design and analysis of safe, economical structures and channels for the conveyance, storage, disposal, and measurement of runoff water;
  • Develop basic knowledge of the hydraulics of surface water flows for use in planning measures needed for environmentally appropriate control of runoff water and/or assessing the safety and efficiency of existing measures; and
  • Determine the ability of vegetation, riprap, and/or various stilling basins to protect hydraulic structures and channels from erosion.

Some research is oriented to specific studies, but the primary goal is to conduct generalized research that can be applied nationally by both public and private agencies without further testing.

Read More [ PDF - 8.6 MB ]

Last Updated on Tuesday, 21 May 2013 11:34  

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