【正文】 ........................................................................ 35 三、初期支護 ..................................................................................................................................................... 36 （一）支立網(wǎng)構(gòu)鋼架，焊縱向連接筋，掛鋼筋網(wǎng)片 ................................................................................... 36 （二）噴射拱、墻部、底部砼： .................................................................................................................... 36 （三）背后回填注漿 ......................................................................................................................................... 38 四、防水層施工 ................................................................................................................................................. 38 五、二次襯砌施工 ............................................................................................................................................... 39 （一）接口防水處理 ......................................................................................................................................... 39 （二）施工縫防水 ............................................................................................................................................. 40 （三）混凝土結(jié)構(gòu)自防水 ................................................................................................................................. 41 （四）二襯鋼筋施工 ......................................................................................................................................... 44 （五）二襯鋼筋支撐與凈空控制 .................................................................................................................... 46 （六）模板施工 ................................................................................................................................................. 47 （七）混凝土施工 ............................................................................................................................................. 50 六、通風(fēng)方案 ..................................................................................................................................................... 52 七、 施工技術(shù)措施 ............................................................................................................................................. 53 （一）穿越路口施工技術(shù)措施 ........................................................................................................................ 53 （二） 超前小導(dǎo)管注漿加固 ............................................................................................................................ 53 （三）路口交通設(shè)施設(shè)置 ................................................................................................................................. 55 （四）污雨水管道保護 ..................................................................................................................................... 55 第七章 施工監(jiān)測及施工信息化 ........................................................................................ 56 一、施工監(jiān)測目的 ............................................................................................................................................. 56 4 二、施工監(jiān)測設(shè)計 ............................................................................................................................................. 56 三、監(jiān)測實施及數(shù)據(jù)處理 ................................................................................................................................. 58 （一）監(jiān)測實施 ................................................................................................................................................. 58 （二）監(jiān)測警戒值的確定原則 ........................................................................................................................ 58 （三）監(jiān)測方法 ................................................................................................................................................. 59 （四 ）洞周收斂 ................................................................................................................................................. 62 （五）地下管線變形監(jiān)測 ................................................................................................................................. 63 （六）數(shù)據(jù)處理及信息反饋程序 .................................................................................................................... 63 四、監(jiān)測管理及質(zhì)量保證措施 ........................................................................................................................ 64 第八章 安全應(yīng)急預(yù)案 .......................................................................................................... 65 一、應(yīng)急小組成員以及職責(zé) ............................................................................................................................ 65 二、最大風(fēng)險及危險源的確定 ........................................................................................................................ 66 三、應(yīng)急響應(yīng) ..................................................................................................................................................... 66 四、暗挖隧道安全事故應(yīng)急措施 .................................................................................................................... 68 （一）地表下沉、周邊建筑物變形超限、隧道坍塌應(yīng)急措施 .................................................................. 68 （二）地表下沉、周邊建筑物變形超限、隧道坍塌事故的預(yù)防措施有： ............................................. 68 （三） 塌方應(yīng)急預(yù)案 ....................................................................................................................................... 71 （四）傷員現(xiàn)場急救措施 ................................................................................................................................. 74 （五）洞內(nèi)涌水、涌砂事故的應(yīng)急措施 ........................................................................................................ 74 （六）防觸電應(yīng)急措施 .............................................................................................