Kalba City, Sharjah United Arab Emirates
Hydraulic Applications
Reinforcement and Stabilization Geosynthetics
The Al Hefaiyah Lake project, located along the Sharjah-Kalba Road, incorporates robust liner protection system featuring APEC’s MATFLEX Geocomposite drainage. Designed to prevent pressure build-up beneath the geomembrane, the system efficiently manages both water leakage and gas accumulation, thereby safeguarding the integrity and functionality of the 132,000 m² reservoir. Integrated with a network of engineered pipes for runoff and rainwater harvesting, the project demonstrates a sustainable and technically advanced solution for water storage in challenging terrain.
Download Case StudyThe accumulation of water pressure caused by leakage or gas generation beneath the liner system can lead to the formation of “whales” and “hippos”—uplift deformations that compromise the integrity and intended functionality of the lake.
Over 150,009 sqm of APEC’s MATFLOW Geocomposite drainage is installed beneath the lake liner system to efficiently manage potential leakage and gas accumulation. In the event of liner damage, any infiltrating water is quickly drained and directed to the lower gradient of the slope. Simultaneously, gases generated beneath the liner are captured at the highest point of the lake base slope. Both gas and liquid are effectively conveyed through the Geocomposite drainage layer to the underlying perforated pipe system for safe collection and removal.
Strategically located along the Sharjah-Kalba Road, Al Hefaiyah Lake spans 132,000 square meters and holds approximately 155 million gallons of water, functioning as a critical water reservoir in the region. With a depth of 4 meters, the lake was constructed using advanced engineering practices tailored to the region’s hilly terrain. A key element of the lake’s design was the incorporation of a Geocomposite drainage layer installed beneath the geomembrane liner system. This layer ensures efficient drainage of both water and gases, enhancing liner protection and maintaining the long-term performance of the reservoir. Further supported by a network of engineered pipes, the system effectively manages surplus water, rainwater harvesting, and valley run-off, showcasing a sustainable approach to water resource infrastructure in challenging topography.
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