摘  要：针对目前隧道渗漏水的现状和原因，摈弃以室内试件抗渗等级评价衬砌混凝土防渗性能的传统思路，以改善混凝土流动性及抗裂性进而提升实体结构防渗性能的新思路来进行衬砌混凝土的配制。在此基础上，通过流动性控制、外加剂改性、内养护减缩等途径开展了衬砌混凝土性能优化研究，制备出了不依赖于现场施工水平的大流动性内养护抗裂衬砌混凝土，并结合施工缝及变形缝等细部防水措施，在某富水区地铁隧道进行了工程应用，取得了较好的防渗漏效果。

Abstract: According to the current status and cause analysis of tunnel seepage, a new idea to improve the fluidity and crack resistance of concrete and thus enhance impervious performance of concrete structure was proposed, replacing the traditional idea of using laboratory permeability grade of the specimens to evaluate impervious performance of lining concrete. On this basis, with the technologies of fluidity control, admixtures modification and shrinkage reducing by internal curing, study on performance optimization of lining concrete was carried out, and lining concrete with performance of high-fluidity, internal curing and high anti-cracking was prepared, which was independent of construction level in-site. Combined with the detail waterproof measures of construction joint and deformation joint, above measures were applied in a metro tunnel served in rich water zone, and desirable effect of seepage prevention was obtained in this project.