Closure cover system is one of important parts of landfill site construction, it includes landfill gas discharge guid ing layer, geotechnical film, drainage layer and plant cover surface soil layer.

• 封场覆盖系统是垃圾卫生填埋场建设的重要组成部分,覆盖系统包括气体导排层、土工膜、排水层、植被表土层。