Geokomposit Drainase

Ithmaar Development Company is developing the reclaimed island of Dilmunia on the north-eastern coast of the island of Muharraq, Kingdom of Bahrain. The development project includes the construction of a nearly 1. 5 km leisure canal (Dilmunia Grand Canal), which will be the central attraction of the island's architectural design, including water activities, fountains, cascades, and waterfalls. Dilmunia canal is elevated few meters above the surrounding ground level, and any potential leaks may become visible and are highly undesirable. Therefore, the project foresees to waterproof the canal structure with various geosynthetic products, including several complementary watertight and drainage elements either installed inside and outside the peripheral walls.

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The Micorosa area, designated as a National Interest Site (SIN), posed significant environmental challenges due to the presence of an industrial waste landfill. The critical environmental levels in this SIN area necessitated a permanent security intervention. The project, authorized by the Italian Ministry of the Environment, aimed to address the persistent issues through capping and physical girdling using a plastic diaphragm.

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Kariangau Offshore Supply Base (KOSB) Fuel Terminal is a fuel terminal located in Balikpapan, East Borneo. It serves as fuel storage for various industries. The Client needed a retaining structure for slope protection of the access road that connects the port and the fuel terminal. Few slope failures and erosion occurred from 2015 and slope remediation already been done in 2016. While the area has a low seismicity level, there is a presence of coal and clay shale at the project location this could be the cause of the problem if appropriate measures are undertaken. Certain substances of coal, typically the iron sulfide (FeS2) can be oxidized after being exposed to air and water, therefore they have the potential to damage the retaining structure if the adequate coating of the system is not applied. The clay shale, while hard with high shear strength when dry, can lose its shear strength when exposed to air and water. The slope to be protected has various height, ranging from 20 – 30 meters. The initial solution was mass gravity retaining structure with gabion and woven geotextile.

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