介绍隧道防排水设施的施工技术和经验 ,并对影响隧道防排水效果的因素及在设计和施工中应考虑的暗埋式排水管、防水层、防水板、注浆或超前预注浆堵水以及防水混凝土等问题提出建议 Describes the construction technology and experience of the tunnel drainage and drainage facilities, and discusses the factors that affect the drainage and drainage of the tunnel and the buried drainage pipe, waterproof layer, waterproof board, grouting or advanced pre-grouting water blocking which should be considered in the design and construction As well as waterproof concrete and other issues to make recommendations