【正文】 ........................................1 地質(zhì)資料 ............................................................................................................................................1 工程特點(diǎn)及難點(diǎn) ................................................................................................................................12 雙壁鋼圍堰設(shè)計(jì) .............................................................................................2 雙壁鋼圍堰設(shè)計(jì)思路 ........................................................................................................................2 相關(guān)設(shè)計(jì)參數(shù) ....................................................................................................................................2 雙壁鋼圍堰結(jié)構(gòu)設(shè)計(jì) ........................................................................................................................33 雙壁鋼圍堰施工方案 ......................................................................................5 雙壁鋼圍堰總體施工方案概述 ........................................................................................................5 雙壁鋼圍堰制作 ................................................................................................................................7 底節(jié)雙壁鋼圍堰拼裝、下水 ............................................................................................................8 雙壁鋼圍臨時(shí)錨固、接高 ..............................................................................................................12 雙壁鋼圍堰浮運(yùn) ..............................................................................................................................14 雙壁鋼圍堰再次接高 ......................................................................................................................15 鋼圍堰下沉定位 ..............................................................................................................................15 搭設(shè)鋼平臺(tái)、安放鋼護(hù)筒 ..............................................................................................................16 鋼圍堰內(nèi)清理 ..................................................................................................................................17 灌注封底砼 ....................................................................................................................................17 壁內(nèi)填充 ........................................................................................................................................18 鉆孔樁施工 ....................................................................................................................................19 承臺(tái)、墩身施工 ............................................................................................................................19 鋼圍堰拆除 ....................................................................................................................................194 基坑水下爆破施工方案 ................................................................................19 爆破工程概況 ..................................................................................................................................193 / 36 爆破設(shè)計(jì) ..........................................................................................................................................20 爆破施工 ..........................................................................................................................................23 清碴 ..................................................................................................................................................25 爆破安全 ..........................................................................................................................................255施工機(jī)械設(shè)備表 ............................................................................................286施工工期安排 ................................................................................................287 水上安全作業(yè)管理措施 ................................................................................30 水上施工作業(yè)安全注意事項(xiàng) ..........................................................................................................30 水上施工作業(yè)安全管理規(guī)定 .........................................................................................................31 水上施工安全設(shè)施管理規(guī)定