1 廖公庄站竖井进横通道马头门 施工作业指2 目 录 1工程简介..................................................... 2 2马头门介绍 ................................................... 2 3马头门的施工流程 ............................................. 2 4马头门施工工艺 ............................................... 3 1)测量放线 ................................................................ 3 2)超前支护 ............................................................... 3 (1)小导管加工 .............................................................. 3 (2)小导管安装 .............................................................. 4 (3)小导管注浆 .............................................................. 4 (4)小导管注浆标准 .......................................................... 4 3)加强环梁施工 ............................................................ 5 4)作业平台搭设 ............................................................ 5 5)马头门分部破除 .......................................................... 6 6)马头门初期支护施工 ...................................................... 6 (1)钢筋网片,格栅架立及安装 ................................................ 6 (2)混凝土喷射 .............................................................. 7 7)初支背后回填注浆 ........................................................ 7 (1)预埋回填注浆管 .......................................................... 7 (2)灌注浆液 ................................................................ 8 5马头门质量保证措施 ........................................... 8 6马头门安全保证措施 ........................................... 8 7监控量测..................................................... 9 2 1 工程简介 廖公庄车站两端为暗挖双层四跨结构,长约91.3m,车站中部为暗挖双层三跨结构,长约146.3m,均为洞桩法施工,岛式站台宽14m,车站总长237.6m,结构覆土约5.66m~12.99m,车站有效站台中心处底板埋深约22.46m。车站共有4个竖...