人工挖孔墩基础方案马山旧城改造一期项目a地块人工挖孔灌注墩施工方案一、工程概况·························································································1二、施工准备·························································································32.1材料及主要机具：········································································32.2作业条件：··················································································4三、操作工艺·························································································4四、质量标准·························································································94.1保证项目：················································································104.2基本项第1页共19页目：················································································104.3允许偏差项目·············································································10五、成品保护························································································11六、应注意的质量问题············································································11九、主要安全技术措施············································································18十、质量记录························································································20十一、墩孔塌孔应急预案·········································································2011.1目的························································································2011.2适用范围··························第2页共19页·······················································2011.3相关文件·················································································2011.4工程概况、危险目标的确定及潜在危险性的评估······························2111.5应急救援指挥领导小组机构、职责···················...
