【正文】 距 (m)規(guī)格間距(m)厚度 (cm)厚度 (cm)Ⅲ拱◇1墻及仰拱△13拱墻拱○2墻●22環(huán) 縱40C25 40C25Ⅲ級圍巖下錨段(一)拱◇1墻及仰拱△13拱墻拱○2墻●22環(huán) 縱40C25 40C25Ⅲ級圍巖拱◇1墻拱墻拱○2墻 環(huán) 縱 45C25 45C25 下錨段(二)及仰拱△13●22 Ⅳ拱墻□23 、仰拱△23拱墻拱○2墻●22環(huán) 縱HW150 型鋼 45C25 45C25Ⅴ拱墻□25 、仰拱△25拱墻拱○2墻●22環(huán) 縱HW175 型鋼 或45C25 45C25注：表中◇表示網(wǎng)噴砼，△表示素砼，□表示聚丙烯網(wǎng)噴砼，○表示中空注漿錨桿，●表示砂漿錨桿所處地質(zhì)情況較差，Ⅴ級圍巖地段占 20%以上，無Ⅰ、Ⅱ級圍巖，難以實施全斷面快速掘進施工。其中 IDK132+920～IDK133+135 為淺埋段，土層較厚，巖溶較發(fā)育。/61176。 本施工組織設(shè)計的重點是實施 B 斷面，里程為 YDK0+～ 。 該段里程地表加固:施噴樁、袖閥管、擺噴樁等施工管理。第 I 頁 共 Ⅱ 頁 鐵 道 工 程 系某隧道段施工組織設(shè)計畢業(yè)論文目 錄第一章 工程概況 .............................................................................................1 編制依據(jù)......................................................................................................................1 工程范圍及工程數(shù)量..................................................................................................1 工程地質(zhì)條件..............................................................................................................1 隧道設(shè)計......................................................................................................................3 節(jié) 隧道施工環(huán)境.........................................................................................................3第 2 章 現(xiàn)場的施工現(xiàn)狀 .....................................................................................4第 3 章 施工總體安排及施工方案 .....................................................................4 隧道進洞方法與開挖支護..........................................................................................4 止水帷幕施工............................................................................................................16 B 斷面端頭加固袖閥管施.......................................................................................17 地表管線加固施工....................................................................................................17 對元崗大橋橋基臨時加固的預(yù)備措施....................................................................17 管棚施工....................................................................................................................19 爆破施工....................................................................................................................20 A、B 斷面隧道施工................................................................................................2 5第 4 章 施工工藝 ...............................................................................................33 噴射混凝土................................................................................................................36 鋼筋網(wǎng)安設(shè).................................................................................................................37 格柵拱架加工與架立................................................................................................37 超前小導(dǎo)管、注漿小導(dǎo)管和鎖腳錨管施工............................................................38 防水層施工................................................................................................................42 仰拱施工....................................................................................................................43 二次襯砌施工............................................................................................................44 襯砌背后注漿............................................................................................................45 第 II 頁 共 Ⅱ 頁 鐵 道 工 程 系 進洞 3M 前的井點降水 .............................................................................................46 第 5 章 工程測量與監(jiān)控量測 ...........................................................................43 施工測量....................................................................................................................48 監(jiān)控量測....................................................................................................................49第六章 工期、進度及勞動力、機械的安排 ...............................................49 A、B 斷面施工總體安排........................................................................................5 1 工期計算....................................................................................................................51 時標(biāo)網(wǎng)絡(luò)圖及施工總體進度橫道圖........................................................................51 機械、設(shè)備進場表（表 63）..................................................................................53 第 7 章 應(yīng)急準(zhǔn)備及處理 .................................................................................51 洞內(nèi)塌方....................................................................................................................55 洞內(nèi)穿水....................................................................................................................55 出現(xiàn)流砂....................................................................................................................55 基坑上鼓....................................................................................................................56 路面塌洞....................................................................................................................56 第 8 章 施工注意事項 .....................................................................................56第 9 章 保證措施 .............................................................................................58 質(zhì)量保證措施............................................................................................................58 安全保證措施............................................................................................................59 進度保證措施............................................................................................................60 文明施工保證措施....................................................................................................60總 結(jié) ........................................