液化天然气接收站LNG工艺隧道喷膜防水应用技术  

Application Technology of Spray-applied Waterproofing in Unloading Tunnel of an LNG Receiving Terminal

作　　者：蒋雅君[1] 杨其新[1] 刘东民 盛草樱[3] 赵菊梅 JIANG Yajun;YANG Qixin;LIU Dongmin;SHENG Caoying;ZHAO Jumei(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China;Hope College of Southwest Jiaotong University,Chengdu 610400,Sichuan,China;School of Life Science and Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China)

机构地区：[1]西南交通大学土木工程学院,四川成都610031 [2]西南交通大学希望学院,四川成都610400 [3]西南交通大学生命科学与工程学院,四川成都610031

出　　处：《隧道建设（中英文）》2018年第11期1878-1887,共10页Tunnel Construction

基　　金：国家自然科学基金面上项目(51878570)

摘　　要：为解决液化天然气(LNG,liquefied natural gas)接收站LNG工艺隧道的高标准防水问题,在采用新奥法施工的LNG工艺隧道中采用包含喷膜防水层的复合防水层体系。基于运营过程中安全环保问题的考虑,LNG工艺隧道的防水标准比常规隧道更为严格。通过几种防水方案的比较,设计了包括径向灌浆、排水系统、EVA防水板、丙烯酸盐喷膜防水层以及其他防排水设施的双层防水系统。通过实际施工结果和后续的观察可知,该隧道的防水实施效果良好。其中,合理的防水系统设计、喷膜防水层的高性能、施工人员的技术培训、充分的准备工作、完善的质量控制和验收程序是隧道中喷膜防水技术成功应用的重点。丙烯酸盐喷膜防水技术与其他防排水措施相结合并成功运用,为类似高标准隧道的防水问题提供了解决方案。The application of a spray-applied waterproof membrane in the case of the liquefied natural gas(LNG)unloading line tunnel constructed via the New Austrian Tunneling Method(NATM)is described.The waterproof standards for the LNG unloading line tunnel are stricter than those for regular tunnels based on the consideration of safety and environmental protection during operation.A double-layer waterproofing system including radial grouting,systematic drainage facilities,an EVA sheet membrane,a spray-applied acrylate waterproof membrane and other waterproofing and drainage facilities are designed based upon comparisons among several possible waterproofing solutions.The application results and consequential observations prove that the outcome of this waterproof system is satisfactory.The important issues for the successful application of the sprayed membrane in this case are summarized,including a reasonable design for the waterproofing system,performance of the sprayed membrane,proper training for the operators,adequate preparations,careful execution,and complete quality control and acceptance.The successful application of the spray-applied acrylate waterproof membrane combined with other waterproofing and drainage facilities in this case has been demonstrated according to the inspection results and provides alternative solutions to improve the waterproof quality of similar tunnels under high standards.

关 键 词：LNG工艺隧道 液化天然气接收站 喷膜防水 丙烯酸盐 复合防水层 

分 类 号：U454[建筑科学—桥梁与隧道工程]