The landfill caps of Gin Drinker's Bay

摘要

Gin Drinker's Bay Landfill, Hong Kong, ceased operations in 1979. The site did not have a lining system and existing subsoil drains were largely ineffective in intercepting migrating leachate. When a 250 m (820 ft.) stretch of railway needed to be built through a portion of the closed landfill site, numerous geosynthetic protections were needed. The rail line provided an important connection between the new airport at Chek Lap Kok and the city. The waste needing to be crossed, however, presented numerous challenges. Any concrete foundations built into the waste would have been susceptible to constant aggressive attack. Measures to . minimize the project's environmental impact and provide protection to the viaduct's concrete piles had to be considered when excavation and construction began.