【正文】 ，日照時間長，雨量充沛。標(biāo)貫擊數(shù)平均為 11 擊。該淤泥具有高含水量、高壓縮性、極低強度、欠固結(jié)等特點。包括拋石、砌石和素填土。本項目基坑支護和樁基礎(chǔ)分四個標(biāo)段，四個標(biāo)段同時施工，此工程為二標(biāo)段?！兜鼗c基礎(chǔ)工程施工及驗收規(guī)范》（GBJ2022022）；※《混凝土結(jié)構(gòu)工程施工質(zhì)量驗收規(guī)范》，（GB502042022）；※其他國家現(xiàn)行有關(guān)技術(shù)標(biāo)準、規(guī)程、規(guī)范；※公司質(zhì)量、環(huán)境與職業(yè)健康安全管理體系文件； ※建設(shè)部建質(zhì)[2022]87 號文《危險性較大的分部分項工程安全管理辦法》 ※某市深基坑工程管理規(guī)定，深建規(guī)（2022）3 號，某市建設(shè)局，2022 年 5 月。國際會展中心（一期）基坑支護專項施工方案1國際會展中心（一期）基坑支護專項施工方案國際會展中心（一期）基坑支護專項施工方案2目 錄第一章 編制說明及依據(jù) .......................................................................................................................................1 編制說明 ........................................................................................................................................................1 編制依據(jù) ........................................................................................................................................................1第二章 工程概況 ...................................................................................................................................................2 工程簡介 ........................................................................................................................................................2 水文地質(zhì)情況 ................................................................................................................................................5 設(shè)計概況 ........................................................................................................................................................6 基坑等級和支護結(jié)構(gòu) ....................................................................................................................................8 基坑監(jiān)測 ................................................................................................................................................9 檢驗和驗收 ..........................................................................................................................................11 基坑支護設(shè)計 ......................................................................................................................................11第三章 管理機構(gòu)、勞動力組織及施工設(shè)備 .....................................................................................................15 管理機構(gòu) .....................................................................................................................................................15 勞動力組織 ..................................................................................................................................................15 項目管理機構(gòu)配備情況表 ..................................................................................................................15 勞動力配置表 ......................................................................................................................................16 主要施工機械設(shè)備表 ..........................................................................................................................17第四章 總平面布置 .............................................................................................................................................18 施工現(xiàn)場平面布置及說明 ..........................................................................................................................18 施工臨時用水用電 ......................................................................................................................................19第五章 施工計劃 .................................................................................................................................................21 施工部署 ......................................................................................................................................................21 施工準備 ......................................................................................................................................................21 技術(shù)準備 ..............................................................................................................................................21 物資、設(shè)備準備 ..................................................................................................................................22 施工現(xiàn)場準備 ......................................................................................................................................22 施工進度計劃 ..............................................................................................................................................22 施工工期 ..............................................................................................................................................22 工期保證措施 ......................................................................................................................................22第六章 基坑施工工藝技術(shù) .................................................................................................................................24 施工重點、難點 ..........................................................................................................................................24 施工順序 ......................................................................................................................................................25 后排旋挖樁施工 ..........................................................................................................................................25 旋挖樁施工流程 ..................................................................................................................................25 樁位放樣 ..............................................................................................................................................26 護筒埋設(shè) ..............................................................................................................................................26 注入泥漿 ..............................................................................................................................................27 鉆孔 .........