【正文】 .......................... 3 二、工程概況 ...................................................................................................................................... 3 起物區(qū)間盾構(gòu)接收井橫通道工程概況 .................................................................................... 3 物北區(qū)間盾構(gòu)井橫通道 ............................................................................................................ 4 三、工程水文地質(zhì)情況 ..................................................................................................................... 5 工程地質(zhì)情況 ............................................................................................................................ 5 水文地質(zhì)條件 ............................................................................................................................ 6 含水層降水施工 ........................................................................................................................ 7 地震與地基地震效應(yīng)評(píng)價(jià) ........................................................................................................ 8 四、施工準(zhǔn)備 ...................................................................................................................................... 8 場(chǎng)地準(zhǔn)備 .................................................................................................................................... 8 技術(shù)準(zhǔn)備 .................................................................................................................................... 8 管理人員安排 ............................................................................................................................ 9 材料準(zhǔn)備 .................................................................................................................................. 10 材料進(jìn)場(chǎng)計(jì)劃安排 ........................................................................................................... 10 材料進(jìn)場(chǎng)檢驗(yàn)內(nèi)容和標(biāo)準(zhǔn) ............................................................................................... 10 施工機(jī)械配 置 .......................................................................................................................... 11 五、風(fēng)險(xiǎn)因素分析 ........................................................................................................................... 11 施工風(fēng)險(xiǎn)識(shí)別與分析 .......................................................................................................... 11 施工風(fēng)險(xiǎn)控制 ...................................................................................................................... 12 施工風(fēng)險(xiǎn)管理組織機(jī)構(gòu)及職責(zé) .......................................................................................... 13 六、工程施工重點(diǎn)、難點(diǎn)分析 ....................................................................................................... 14 七、工程風(fēng)險(xiǎn)分析 ........................................................................................................................... 15 工程風(fēng)險(xiǎn)源概況 ...................................................................................................................... 15 初支施工階段風(fēng)險(xiǎn)監(jiān)測(cè)情況 .................................................................................................. 15 工程重難點(diǎn)分析 ...................................................................................................................... 16 八、工期籌劃 .................................................................................................................................... 16 九、盾構(gòu)接收井橫通道二襯施工方案 ........................................................................................... 16 2 施工方案概述 .......................................................................................................................... 16 施工段劃分 .............................................................................................................................. 17 施工步序 .................................................................................................................................. 19 仰拱臨時(shí)中隔墻換撐方法 ...................................................................................................... 20 防水施工 .................................................................................................................................. 22 鋼筋混凝土結(jié)構(gòu)施工 .............................................................................................................. 25 第一步側(cè)墻結(jié)構(gòu)施工 .............................................................................................................. 27 第二步側(cè)墻結(jié)構(gòu)施工 .............................................................................................................. 29 拱部結(jié)構(gòu)施工 .......................................................................................................................... 29 堵頭模板安裝 ........................................................................................................................ 31 模板支架拆除及混凝土的養(yǎng)護(hù) ............................................................................................ 31 二襯背后回填注漿 ................................................................................................................ 32 盾構(gòu)鋼環(huán)及堵頭二襯施工方法 ............................................................................................ 32 十、鋼筋工程施工工藝 ................................................................................................................... 34 十一、模板工程施工工藝 ............................................................................................................... 37 十二、混凝土工程施工工藝 ........................................................................................................... 38 十三、工程風(fēng)險(xiǎn)應(yīng)對(duì)措施 ............................................................................................................... 43 十四、施工監(jiān)控量測(cè) ....................................................................................................................... 44 十五、質(zhì)量保證措施 ..........................................