隧道質(zhì)量缺陷治理方案‘

1、隧道質(zhì)量缺陷整治方案中國(guó)水利水電第七工程局有限公司第1頁(yè)目錄1編制依據(jù).....................................................................12編制范圍及目的...............................................................13工程概況......................................

2、...............................13.1工程概述...................................................................13.2主要技術(shù)標(biāo)準(zhǔn)...............................................................23.3工程特點(diǎn).................................

3、..................................23.4地震動(dòng)參數(shù).................................................................34隧道質(zhì)量缺陷的整治原則.......................................................35隧道質(zhì)量缺陷的類型.................................

4、..........................36脫空整治方案.................................................................36.1原因分析...................................................................36.2整治措施......................................

5、.............................36.3二襯與初支間脫空處理措施...................................................36.4初支與基巖面脫空處理措施...................................................77襯砌欠厚整治方案...............................................

6、..............97.1原因分析...................................................................97.2程度判定..................................................................107.3整治措施................................................

7、..................107.4拱墻欠厚拆換處理措施......................................................107.5拱墻欠厚鉆孔注漿與錨固補(bǔ)強(qiáng)處理措施........................................138襯砌局部裂縫整治方案........................................................17

8、8.1原因分析..................................................................178.2整治措施..................................................................178.3沿縫鑿孔壓漿處理措施......................................................178

9、.4沿縫鑿槽壓漿處理措施......................................................198.5施工注意事項(xiàng)..............................................................209鋼筋外露與保護(hù)層不足的整治方案..............................................209.1原因分析........

10、..........................................................209.2整治措施..................................................................209.3鋼筋外露和保護(hù)層不足的處理措施............................................209.4施工注意事項(xiàng)............

11、..................................................2110滲漏水整治方案.............................................................2210.1原因分析.................................................................2210.2整治措施.............

12、....................................................2210.3襯砌內(nèi)部滲漏水埋管注漿處理措施...........................................2310.4襯砌滲漏水鑿槽處理措施...................................................2610.5襯砌滲漏水裂縫嵌縫處理措施.................

13、..............................2810.6襯砌局部面滲處理措施.....................................................2910.7施工注意事項(xiàng).............................................................3211.二襯問(wèn)題整治方案...................................

14、........................3211.1原因分析.................................................................3211.2整治措施.................................................................3311.3處理方案....................................

15、.............................33隧道質(zhì)量缺陷整治方案第1頁(yè)隧道質(zhì)量缺陷整治方案1編制依據(jù)(略)2編制范圍及目的為隧道質(zhì)量缺陷的整治提供理論依據(jù)，指導(dǎo)隧道質(zhì)量缺陷全過(guò)程整治作業(yè)，使隧道質(zhì)量缺陷整治滿足設(shè)計(jì)、規(guī)范要求，并預(yù)防施工中安全質(zhì)量事故的發(fā)生，確保質(zhì)量缺陷整治施工順利進(jìn)行。3工程概況3.1工程概述(略)3.2主要技術(shù)標(biāo)準(zhǔn)序號(hào)序號(hào)主要技術(shù)標(biāo)準(zhǔn)主要技術(shù)標(biāo)準(zhǔn)1鐵路等級(jí)客運(yùn)專線2正線數(shù)目雙線3速度目標(biāo)值250km

16、h4正線線間距4.6m5最小曲線半徑一般地段4000m，個(gè)別地段3500m，樞紐加減速地段合理選定。6最大坡度一般地段20‰，困難地段25‰，個(gè)別地段30‰7牽引種類電力8到發(fā)線有效長(zhǎng)度650m9列車運(yùn)行控制方式自動(dòng)控制10行車指揮方式綜合調(diào)度集中3.3工程特點(diǎn)隧道全長(zhǎng)380m，深部為儲(chǔ)氣結(jié)構(gòu)，其周邊分布有大型天然氣田，全段均為Ⅴ級(jí)圍巖，地質(zhì)復(fù)雜，施工難度大。隧道位于丘陵地區(qū)，地形有一定起伏，隧道自進(jìn)口至進(jìn)口為連續(xù)下坡在隧道施工期間排水

17、需進(jìn)行統(tǒng)一規(guī)劃，保證排水暢通。隧道進(jìn)口靠近樂(lè)宜高速公路，進(jìn)口位于山谷中，需修建便道進(jìn)行施工，交通條件較好，施工材料、設(shè)備進(jìn)場(chǎng)較為方便。隧道進(jìn)口坡面仰坡上方D2K95195～D2K95250及其左右各20m范圍存在危巖落石，主要為泥巖砂巖差異風(fēng)化形成的孤石，塊體以0.5～1m見方為主，對(duì)隧道進(jìn)口施工影響較大。全段地下水弱發(fā)育，地下水對(duì)混凝土具有酸性侵蝕性，環(huán)境作用等級(jí)為H2，總體而言，該隧道工程地質(zhì)條件較差，施工難度大。隧道全長(zhǎng)445m，