一、编制说明及依据.........................................11.1编制说明..............................................11.2编制依据..............................................1二、工程概况...............................................1三、施工组织...............................................23.1技术准备..............................................23.2现场准备..............................................33.3劳动力准备............................................43.4施工机械设备准备......................................43.5施工进度计划..........................................6四、挖孔桩施工方法.........................................64.1开挖顺序..............................................64.2每次循环进尺深度......................................64.3开挖方法..............................................64.4出土及提升............................................74.5钢筋笼制作安装........................................74.6混凝土浇筑方法........................................7五、挖孔桩施工工艺.........................................75.1施工工艺流程..........................................75.2施工工艺..............................................8六、挖孔桩终孔验收及成桩的质量检测........................126.1挖孔桩终孔验收.......................................126.2成桩质量检测.........................................136.3钢筋制安质量检测.....................................146.4桩身混凝土质量检查...................................14七、施工保证措施..........................................157.1质量保证措施.........................................157.2安全保证措施.........................................177.3安全用电技术措施.....................................187.4坠落事故预防.........................................197.5窒息、中毒事故的预防.................................197.6雨季施工措施.........................................197.7其他安全技术措施.....................................20八、施工环保、水保保持措施................................218.1施工保护目标.........................................218.2环境保护体系.........................................218.3林木、植被、土地及地下水资源保护措施.................218.4水环境保护措施.......................................228.5大气环境保护措施.....................................228.6生态环境保护措施.....................................22九．应急预案..............................................229.1组织机构.............................................239.2应急小组职责.........................................249.3紧急情况发生和上报程序...............................259.4突发事件分析及应急预案...............................25昭通新机场联络线一级公路工程下荒冲大桥人工挖孔桩施工方案编制：复核：审批：中铁十一局集团有限公司昭通机场路工程项目经理部二〇一七年二月第0页共31页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第0页共31页一、编制说明及依据1.1编制说明根据对设计图纸、地质勘察说明及对下荒冲大桥0号桥台周边环境的调查，下荒冲大桥桩基为端承桩，侵岩深度为8米，我部施工采用人力配合简单的机具设备下井挖掘成孔，灌注混凝土成桩的施工工艺，即采用人工挖孔桩进行桩基础施工。1.2编制依据1)《龙山寨至赵家小冲施工设计图纸》；2)《公路桥涵施工技术规范》JTGTF50-2011；3)《公路工程质量检验评定标准》JTGT80/1-2004；4）施工合同文件。二、工程概况下荒冲大桥为跨越沟谷及村庄而设，为分离式布置，桥型总体布置为4*30+4*30+4*30m，中心桩号...
