隧道大管棚施工方案

1、隧道出口大管棚施工方案隧道出口大管棚施工方案1目錄1編制依據(jù)編制依據(jù)............................................................................................................12隧址地區(qū)地貌概述隧址地區(qū)地貌概述............................................................

2、................................13設(shè)計(jì)要點(diǎn)設(shè)計(jì)要點(diǎn)............................................................................................................14施工工藝流程施工工藝流程........................................................

3、............................................15施工方法施工方法............................................................................................................25.1鉆機(jī)工作平臺開挖..............................................

4、..........................................................25.2測量放線........................................................................................................................25.3施作導(dǎo)向墻、安設(shè)導(dǎo)向管...................

5、.........................................................................25.4封閉掌子面....................................................................................................................35.5鉆孔................

6、................................................................................................................35.6管棚的加工...................................................................................................

7、.................45.7管棚安裝........................................................................................................................65.8地層加固注漿.................................................................

8、...............................................65.9充填并加固導(dǎo)管............................................................................................................65.10注漿異?，F(xiàn)象處理.........................................

9、.............................................................65.11注漿應(yīng)注意事項(xiàng)..........................................................................................................76施工人員、機(jī)械設(shè)備投入表施工人員、機(jī)械設(shè)備投入表...............

10、.............................................................76.1施工人員投入................................................................................................................76.1施工機(jī)械投入...........................

11、.....................................................................................87施工進(jìn)度安排施工進(jìn)度安排....................................................................................................88風(fēng)險(xiǎn)源辨識及控制措施風(fēng)險(xiǎn)源辨識及控制措

12、施....................................................................................89工程質(zhì)量保證工程質(zhì)量保證..................................................................................................109.1質(zhì)量保證措施............

13、..................................................................................................109.2質(zhì)量管理體系組織機(jī)構(gòu)..............................................................................................109.3工程質(zhì)量管理體系

14、......................................................................................................109.4建立健全質(zhì)量管理制度..............................................................................................139.4.1質(zhì)量

15、責(zé)任制度................................................139.4.2質(zhì)量目標(biāo)管理制度............................................139.4.3技術(shù)交底制度................................................139.4.4工序“三檢”制度.................................

16、...........139.4.5工序交接制度................................................139.4.6隱蔽工程檢查驗(yàn)收制度........................................139.4.7測量復(fù)核制度................................................139.4.8施工過程質(zhì)量檢測制度.............

17、...........................139.4.9原材料、半成品和成品現(xiàn)場驗(yàn)收制度............................149.4.10儀器設(shè)備的標(biāo)定制度.........................................149.4.11施工資料管理制度...........................................149.4.12質(zhì)量預(yù)控制度...........

18、....................................149.4.13質(zhì)量事故報(bào)告制度...........................................1410安全施工保證安全施工保證................................................................................................1410.1安全管理組織機(jī)

19、構(gòu)....................................................................................................14隧道出口大管棚施工方案隧道出口大管棚施工方案1隧道大管棚施工方案隧道大管棚施工方案1編制編制依據(jù)依據(jù)1、回龍寺隧道管棚設(shè)計(jì)圖。2、《公路工程技術(shù)標(biāo)準(zhǔn)》（JTGB012014）。3、《公路隧道施工技術(shù)規(guī)范》（JTGF602009）。4、

20、《公路工程質(zhì)量檢驗(yàn)評定標(biāo)準(zhǔn)》（JTGF8012004）。5、《重慶市高速公路施工標(biāo)準(zhǔn)化管理指南（隧道）》。6、業(yè)主對本合同段工程的質(zhì)量和工期要求。2隧址地區(qū)地貌概述隧址地區(qū)地貌概述回龍寺隧道出口為極小凈距隧道，施工時(shí)分先行洞和后行洞施工，左洞為先行洞，右洞為后行洞。本合同段內(nèi)隧道左洞施工里程ZK40105.5～ZK40418.5全長313米，右洞施工里程K40100～K40413，全長313米。隧址區(qū)屬構(gòu)造剝蝕丘陵地貌區(qū)，地表為山包、溝

21、槽相間地形，地形起伏大，軸線地面高程378.00～456.00m，相對高差78.00m。地表覆蓋殘坡積粉質(zhì)粘土，坡體上部土層較薄，坡腳及溝槽地帶上覆土層較厚。沿線植被發(fā)育，多以雜草、灌木為主。左洞出口位于一山脊處，縱向坡度12～30，兩側(cè)橫向坡度25～40；右洞進(jìn)口位于一凹槽測斜破下部，地形西南高東北低，坡向61，坡度15～28。隧址區(qū)地層主要為上覆第四系全新統(tǒng)殘坡積層（Q4eldl）粉質(zhì)粘土；下伏基巖主要為侏羅系中統(tǒng)上沙溪廟組（J2s

22、）砂巖、泥巖。隧址區(qū)地下水以井、溝等形式表現(xiàn)。地下水類型主要有松散層孔隙水、基巖裂隙水。3設(shè)計(jì)要點(diǎn)設(shè)計(jì)要點(diǎn)由于隧道洞口淺埋，為確保開挖穩(wěn)定，在隧道左、右線出洞口35m，隧道拱部122范圍內(nèi)采用Φ127無縫鋼管（壁厚6mm）超前大管棚注漿支護(hù)輔助施工，共設(shè)2環(huán)，每根鋼管長35m，環(huán)向間距0.4m，外插角為1，填充M30水泥砂漿。隧道開挖最大尺寸為寬高=15.45m8.05m。隧道限界寬度為14.75m，限界高度為5.0m。設(shè)計(jì)采用C30混