公开(公告)号：US11821316B1

公开(公告)日：2023-11-21

申请号：US18309336

申请日：2023-04-28

申请人： BEIJING URBAN CONSTRUCTION DESIGN & DEVELOPMENT GROUP CO. LIMITED

发明人： Yonggang Jia ,  Yue He ,  Wen Cheng ,  Sicheng Jia ,  Weidong Lu ,  Fan Wu

IPC分类号： E21D11/00 ,  E21D11/10

CPC分类号： E21D11/107

摘要： Provided are a system and construction method of a single-layer lining tunnel structure based on a mine-tunnelling method. With the single-layer lining tunnel structure, a structural rigidity and durability of the tunnel are improved. A construction process of sprayed concrete is improved, specifically, compactness agent and durability enhancing fiber are added to concrete to improve the compactness of concrete, and a special spraying process is adopted to reduce a bound rate of the concrete, and thus to improve the impermeability of sprayed concrete to reach a impermeability level of waterproof concrete. Steel fiber, cellulose fiber, synthetic fiber and other materials are added into the concrete can improve the tensile strength, crack resistance and durability of the concrete.