前言:塑料板防水层具有防水性能好,不污染环境,施工技术容易掌握等优点,特别是塑料板的抗渗能力和防止侵蚀性地下水对混凝土的腐蚀,都比其它防水材料优越。因此要使隧道建成后保持干燥无水,采取塑料板作复合式衬砌中间防水层是比较适宜的。 Preface: Plastic waterproof layer with good waterproof performance, do not pollute the environment, easy to grasp the advantages of construction technology, especially plastic sheet impermeability and prevent erosion of groundwater erosion of concrete, are superior to other waterproof materials. Therefore, it is necessary to make the tunnel dry and dry after the completion of the tunnel. It is more appropriate to adopt a plastic board as a composite lining intermediate waterproof layer.