【正文】 .............................. 5 工程概況 ............................................................................................................... 5 工程地質(zhì)及水文地質(zhì) ........................................................................................... 5 地形地貌 ................................................................................................... 5 地質(zhì)構(gòu)造 ................................................................................................... 5 地層巖性 ................................................................................................... 7 水文地質(zhì)特征 ........................................................................................... 9 巖溶發(fā)育特征 ........................................................................................... 9 不良地質(zhì)現(xiàn)象 ........................................................................................... 9 地震烈度 ................................................................................................. 10 隧道圍巖分類 ......................................................................................... 10 第 4 章 內(nèi)輪廓的確定 ..................................................................................................... 12 內(nèi)部凈空的確定 ................................................................................................. 12 結(jié)構(gòu)斷面形式及尺寸初步擬定 ......................................................................... 13 第 5 章 公路隧道襯砌結(jié)構(gòu)的設(shè)計(jì)和計(jì)算 ..................................................................... 14 圍巖壓力計(jì)算 ..................................................................................................... 14 Ⅲ級(jí)圍巖壓力計(jì)算 ................................................................................. 14 Ⅴ級(jí)圍巖壓力計(jì)算 ................................................................................. 14 襯砌內(nèi)力計(jì)算 ..................................................................................................... 15 ANSYS 加載求襯砌內(nèi)力過程 ............................................................................... 15 Ⅲ級(jí)圍巖襯砌內(nèi)力計(jì)算與強(qiáng)度檢驗(yàn) ..................................................... 16 Ⅴ級(jí)圍巖襯砌內(nèi)力計(jì)算與強(qiáng)度檢算 ..................................................... 19 襯砌結(jié)構(gòu)強(qiáng)度檢算原理 ..................................................................................... 22 襯砌截面配筋計(jì)算 ............................................................................................. 23 截面配筋原理 ......................................................................................... 23 Ⅲ級(jí)圍巖配筋計(jì)算 ................................................................................. 24 Ⅴ級(jí)圍巖配筋計(jì)算 ................................................................................. 25 裂縫檢驗(yàn) ............................................................................................................. 27 第 6 章 隧道施工技術(shù)及施工工藝 ................................................................................. 29 新 奧法施工 ......................................................................................................... 29 新奧法施工的基本原則 ......................................................................... 29 新奧法的施工工序 ................................................................................. 30 施工方案的確定 ................................................................................................. 30 全斷面開挖施工 ..................................................................................... 31 爆破設(shè)計(jì) ............................................................................................................. 31 炮眼的種類和作用 ................................................................................. 32 掏槽形式 ................................................................................................. 32 隧道爆破的參數(shù)設(shè)計(jì) ............................................................................. 33 炮眼的布置 ............................................................................................. 35 光面爆破 ................................................................................................. 36 中隔壁法 (CD 法 )施工 ........................................................................................ 39 中隔壁法施工要求 ................................................................................. 39 CD 法的施工工序 ................................................................................... 40 管棚支護(hù) ............................................................................................................. 40 管棚的構(gòu)造組成 ..................................................................................... 41 管棚的設(shè)計(jì)參數(shù) ..................................................................................... 41 超前管棚施工的工藝流程 ..................................................................... 41 管棚施工 ................................................................................................. 42 圍巖初期支護(hù) ..................................................................................................... 43 錨桿施工 ................................................................................................. 43 鋼筋網(wǎng)安設(shè) ............................................................................................. 45 鋼架施工 ................................................................................................. 45 C25 噴射混凝土 ..................................................................................... 47 襯砌施工 ............................................................................................................. 49 二次襯砌施工工序 ................................................................................. 49 施工方法 ................................................................................................... 50 圍巖監(jiān)控量測 ................................................................................................