广州地铁18号线三工区钻孔桩专项施工方案编制：。审核：。批准：。中国铁建二十二局集团有限公司广州地铁18号线三工区项目部2017年9月1广州地铁18号线三工区钻孔桩专项施工方案目录第一章编制依据及原则...................................................................................................-1-1.1编制依据.....................................................-1-1.2编制原则.....................................................-1-第二章工程概述...............................................................................................................-3-2.1.工程概况....................................................-3-2.2.地质概况....................................................-3-2.3.水文情况....................................................-3-2.4.气象条件....................................................-3-2.5.钻孔桩工程特点和施工难点....................................-4-第三章钻孔桩施工.........................................................................................................-5-3.1总体施工方案.................................................-5-3.2施工工艺.....................................................-5-3.3施工方法.....................................................-7-3.3.1施工准备.........................................................................................................-7-3.3.2测量放线.........................................................................................................-8-3.3.3钢护筒制作及埋设.........................................................................................-9-3.3.4泥浆制备及其循环系统...............................................................................-10-3.3.5钻机就位.......................................................................................................-10-3.3.6钻进成孔.......................................................................................................-10-3.3.7成孔、成孔检查...........................................................................................-12-3.3.8清孔...............................................................................................................-13-3.3.9钢筋笼的制作与安装...................................................................................-13-3.3.10混凝土施工.................................................................................................-17-3.3.11钻孔桩成桩质量检测.................................................................................-21-3.4旋挖桩施工应急措施.........................................-21-3.4.1塌孔的处理...................................................................................................-21-3.4.2缩孔处理.......................................................................................................-21-3.4.3卡埋钻具.......................................................................................................-22-3.4.4灌注事故的预防及处理...............................................................................-23-第四章施工资源配置...................................................................................................-26-4.1材料计划....................................................-26-2广州地铁18号线三工区钻孔桩专项施工方案4.2机械设备计划................................................-26-4.3人力资源计划...
