【正文】 一半止水帶，待模注混凝土凝固后拆除擋頭板，彎曲φ 10 鋼筋卡套上止水帶的另一半，模注下一循環(huán)混凝土。焊接前待焊接頭板面應(yīng)擦凈，并應(yīng)根據(jù)材質(zhì)通過(guò)實(shí)驗(yàn)確定焊接溫度和速度。 ②、防水板施工前，應(yīng)復(fù)核中線(xiàn)位置和高程，檢查斷面尺寸，保證襯砌施工后的襯砌厚度和凈 空滿(mǎn)足規(guī)范和設(shè)計(jì)要求。 橫向排水盲管 安設(shè) 橫向排水盲管是連接縱向排 水管與側(cè)排水溝的水力通道，通常采用硬質(zhì)塑料管，其設(shè)置應(yīng)符合設(shè)計(jì)要求，施工中先在縱向盲管上預(yù)留拼接，然后在仰拱及填充混凝土施工前接長(zhǎng)至側(cè)排水溝。 ③ 、對(duì)第一次進(jìn)場(chǎng)的防水卷材，廠(chǎng)家必須提供合格的型式檢驗(yàn)證書(shū)。 在進(jìn)洞口附近修建材料庫(kù)、堆料場(chǎng)，按照材料計(jì)劃供應(yīng)進(jìn)場(chǎng)，做到不積壓、不短缺。 施工用電 XX隧道進(jìn)口設(shè)置 2 臺(tái) 630KVA 變壓器，位于 ZK70+700 處。隧址區(qū)中風(fēng)化巖體裂隙不發(fā)育。裂面較平直，閉合，局部張開(kāi) 3～ 8mm，局部有少量泥質(zhì)充填，延伸約 2～ 3m，發(fā)育間距 1～ 2m。 地質(zhì)情況 隧址區(qū)處于 方斗山?jīng)_斷背斜北西翼 ，為單斜構(gòu)造，巖層傾向 315176。 C，其它地區(qū)多年平均氣溫 13～ 17176。 ： 隧道概況一覽表 表 XX隧道分屬 A A8 合同段，其合同段分界樁號(hào)左右線(xiàn)分別為 ZK71+ 和K71+830。隧址區(qū)在山脊一帶植被較發(fā)育，部分為基巖裸露，進(jìn)出洞口緩坡，溝谷地帶多為第四系XX 高速公路 XX 標(biāo) XX 隧道 二次襯砌施工方案 2 坡殘積層覆蓋，常為水田及耕地。XXX 高速公路 XX 標(biāo) XX 隧道 二次襯砌施工方案 1 目 錄 1 編制依據(jù) .............................................................................................................................. 1 ........................................................................................................................... 1 ........................................................................................................................... 1 ........................................................................................................................... 1 2 工程概況 .............................................................................................................................. 1 ........................................................................................................................... 1 、水文及 地質(zhì)條件 ...................................................................................................... 2 .......................................................................................................... 2 ................................................................................................... 3 地質(zhì)情況 ......................................................................................................... 3 .......................................................................................................... 3 .................................................................................................................... 4 .......................................................................................................... 5 3 施工準(zhǔn)備 .............................................................................................................................. 6 ........................................................................................................................... 6 ........................................................................................................................... 6 .......................................................................................................... 6 .......................................................................................................... 6 ........................................................................................................................... 7 .......................................................................................................... 7 4 進(jìn)度計(jì)劃及資源配置 ............................................................................................................ 7 ........................................................................................................................... 7 ........................................................................................................................... 7 5 施工技術(shù)方案 ....................................................................................................................... 8 、排水施工 ...................................................................................................... 8 .......................................................................................................... 8 .......................................................................................................... 9 ................................................................................. 9 ................................................................................10 ................................................................................10 ......................................................................10 ...........................................................................................10 XXX 高速公路 XX 標(biāo) XX 隧道 二次襯砌施工方案 2 ...........................................................................................13 ................................................................................14 ...........................................................................................14 ...........................................................................................14 ...................................................................................................................14 ..............................................................................................14 .........................................................................................................15 ..............................................................................................15 .......................................................................................16 ................................................................................17 .............................................................................17 .....