Projects

Description

In 1997 DHI was contracted by the Sabah State Government to prepare a holistic plan for the management of shoreline development along the rapidly developing West Coast of the State. The Plan was made in conjunction with the Danish Consultants, Institute for the Water environment VKI, Hassløv and Kjærsgaard and PEM Consult with local support provided by SEM Consultants and University Malaysia Sabah. 

Over the course of the two year study, regional numerical models for tidal hydrodynamics, offshore and nearshore wave climates, marine and coastal sediment transport, water quality and eutrophication were established for the 350km study area, with detailed models being produced for specific development areas. 

The Shoreline Management Plan includes development control and environmental protection strategies for over 100 management units identified along the coast, including zoning for conservation purposes, industrial and recreational development. The plan includes a detailed assessment of four integrated tourism orientated reclamation projects, including demand assessment, hydraulic functionality, marine habitat and socio-cultural impact leading to the provision of 1500Ha of marine area being alienated as development area. Four specific reclamation schemes were identified including aesthetic considerations and these schemes have subsequently been adopted by the State Government in association with the overall management plan for implementation in the local plans by the Town and Regional Planning Department. 

Other deliverables from the Shoreline Management Plan include:

• GIS database including all primary and secondary data captured by the project
• Database of numerical model bathymetries, boundary and calibration data for subsequent use by third parties for eventual detailed studies within the project area
• Terms of Reference for Detailed EIA (marine reclamation)
• Terms of Reference for Environmental Monitoring and Management (marine reclamation)

Continuing DHI's involvement with the development of Kertih Port, which dates back to the preliminary design of the port facilities in 1991, DHI was contracted by Minconsult to perform detailed sedimentation and coastal impact studies for the expansion of the port facilities from 3 berths to 6 berths. In addition to the impact studies, the project includes the transfer on MIKE INFO Coast to the port operator who will then take over the longterm coastal monitoring and management requirement. 

Description

Environmental impact study for borrow dredging and reclamation activities. Tasks included identification of suitable borrow areas including sediment classification and jet probing, marine habitat survey and numerical modelling of sediment spill from the dredging and reclamation operations. Based upon the numerical model results, optimization of construction plant and operating procedures were made in order to fulfill environmental quality objectives. 

Description

Pipeline shore approach design study for the Angsi Gas trunkline, which will be Malaysia's highest throughput gas pipeline upon completion. The pipeline makes landfall immediately south of Kertih Port on the East Coast of Peninsula Malaysia. The landfall is consequently highly dynamic due to complex morphological processes including sideslope flattening along the south side of the navigation channel, storm profile evolution of the inner profile and rip channel development around the coastal protection groynes, which address the primary downdrift erosion resulting from the port facilities. 

Description

Preliminary field survey for major port development project, survey included: 

• Bathymetry survey
• Bottom sediment survey
• Jet probe survey

Description

Ongoing construction works for the new State Islamic school south of Sg Papar has contravened State Land Ordinance foreshore reserve limits and DID set-back guidelines with permanent structures only being set-back 10m from the high water line. DHI has been contracted by the State Government to ascertain if erosion observed during 1997 will continue and if this proves to be the case, to establish the preferred form of coastal protection including hydraulic design parameters and the environmental impact upon adjacent properties. 

Description

Expansion of the Kertih port facilities required approximately 5 million cubic meters of material from the approach channel and berthing areas. As the Paka and YTL power stations are located only a little over 1km north of the port area, concern was raised over the potential impact of suspended sediment released during the dredging operation on the cooling water system of the power stations. DHI performed a numerical spill forecast model using MIKE 21 MT set-up using the planned dredging equipment and operating practices both of the dredging plant (Cutter suction dredger and Trailing Suction Hopper Dredger) and re-handling basin. Model results indicated acceptable concentrations of suspended sediments over the intakes with sediment ingress over the dredging period estimated to be only between 5 and 20%  of that occurring during a typical NE Monsoon period, which is well within the operating tolerance of the cooling water system. The model forecast results were subsequently borne out by monitoring of the suspended sediment concentrations in the intake area 

Following on from the success of the Shoreline Management Plan for the West Coast of Sabah, DHI has been contracted to extend the shoreline classification component of the SMP to cover the remaining 1500km of Sabah's coastline, establish littoral cells and drift patterns and also identify areas presently suffering erosion.  The ground trotting of information derived from aerial photographs and earlier reports (e.g. National Coastal Erosion Study) has been hampered by difficult land access and concerns over piracy, a problem which persists along much of the East Coast of Sabah.  Nevertheless, the survey has identified some wonderful morphological feature such as natural tombola shown above.