××市×××高架快速路建设工程××桥梁桩基挖孔灌注桩专项施工方案编制人：审核人：审批人：中国建筑第×工程局有限公司ChinaConstructionSeventhEngineeringdivision.corpLtd.2012年6月目录一、编制依据.....................................................6二、工程概况.....................................................6三、施工条件.....................................................73.1、地形、地貌...............................................73.2、地质条件.................................................73.3自然地理情况...............................................83.3.1水文..................................................83.3.2气候、气象............................................83.3.3地下水位情况..........................................93.3.4地下管线情况..........................................9四、施工方法.....................................................94.1人工挖孔桩工艺流程及施工方法...............................94.1.1工艺原理..............................................94.1.2作业特点.............................................104.1.3机具设备.............................................104.2人工挖孔桩施工工艺........................................104.2.1整体施工原则及顺序...................................104.2.2施工流程.............................................104.2.3场地平整.............................................114.2.4放线定桩位...........................................124.2.5开挖第一节土方.......................................124.2.6护壁立模.............................................124.2.7浇筑第一节护壁混凝土.................................134.2.8第一节桩身桩位检查...................................134.2.9架设垂直运输架.......................................144.2.10安装安全保障设施....................................144.2.11开挖吊运第二节桩孔土方..............................144.2.12第二节护壁立模......................................144.2.13浇筑第二节护壁混凝土................................154.2.14检查桩位中心轴线及标高..............................154.2.15循环作业............................................154.2.16成孔检查验收........................................154.2.17制作及吊装钢筋笼....................................154.2.18浇筑桩身混凝土......................................16五、爆破技术方案................................................165.1整体设计方案..............................................165.1.1爆破参数的设计.......................................175.1.2掏槽孔的设计.........................................175.1.3辅助孔的设计.........................................175.1.4周边孔的设计.........................................175.1.5装药方法和装药结构设计...............................185.1.6起爆网络设计.........................................185.1.7爆破安全设计与校核...................................185.1.8爆破个别飞散物的校核与防护...........................195.2爆破施工方法..............................................195.2.1施工工艺和施工流程...................................195.2.2施工准备.............................................205.2.3标孔.................................................215.2.4钻孔.................................................215.2.5药包制作.............................................215.2.6药包装填及堵塞.......................................225.2.7起爆网络连接与检查....................
