【正文】 巖的裂隙中，受裂隙發(fā)育的影響，地下水水量較貧乏。 地質水文情況 3 地形地貌 渝遂立交場區(qū)屬侵蝕剝蝕丘陵地貌，立交西南側為鐵路線，中間為高灘巖河，整個立交地勢東西高，中間低。施工中將建筑材料、機械設備等資源進行合理均衡的配置和高效有序的利用，確保本標段工程的施工步調穩(wěn)健、協(xié)調。 (2)、優(yōu)質高效的原則：加強領導，強化管理，優(yōu)質高效。內環(huán)快速路西北半環(huán)（鳳中立交 － 渝遂立交段）拓寬改造工程 渝遂立交（ K5+100－ K5+780） 深基坑施工專項方案 1 目 錄 一、編制依據(jù) .......................................................................................................................................................................1 編制依據(jù) ...................................................................................................................................................................1 編制原則 ...................................................................................................................................................................1 二、工程概況 .......................................................................................................................................................................2 地通道設計概況 ......................................................................................................................................................2 地質水文情況 ..........................................................................................................................................................2 三、施工部署 .......................................................................................................................................................................4 四、基坑施工 .......................................................................................................................................................................5 施工準備工作 .........................................................................................................................................................5 土石方開挖 ..............................................................................................................................................................6 集水井明排施工 ......................................................................................................................................................7 邊坡施工與維護 ......................................................................................................................................................7 ...................................................................................................................................................................8 ...........................................................................................................................................................8 五、深基坑監(jiān)測 ..................................................................................................................................................................9 監(jiān)測目的 ...................................................................................................................................................................9 ...................................................................................................................................................................9 測點布置 ...................................................................................................................................................................9 ................................................................................................................................................................ 10 ............................................................................................................................11 六、深基坑施工中的安全措施 .......................................................................................................................................11 基本要求 .................................................................................................................................................................11 機械傷害防護措施 ............................................................................................................................................... 12 坍塌防護措施 .................................................................