C121技术交底C121+土方开挖施工技术交底

1、施工技术质量交底记录Construction Technology Quality Clarification Record项目名称project 施工单位constructionunit扬巴二期改造项目IPS II PROJECT中石化五公司FICC工程名称workIB/PIB C121交底日期clarification date交底部位及工序process2010 年 04 月 29 日 2010-04-29交底地点location基础 foundation-土方开挖excavation现场办公室field office执行规范和规程execution procedures建筑地基基础工程

2、施工质量验收规范GB50202-2002 Specification for Foundation Construction Quality Inspection AndAcceptanceGB50202-2002交底内容clarification content： 一、施工准备construction preparation1、轴线定位标桩已设置并保护好。Axis positioning stake is set and protected各种土方施工机具和现场临时通道正常, 临时设施和安全措施准备就绪。All excavation2、equipment tools and temporar

3、y passage perform well,temporary facilities and safety measures prepared基坑周边灰线已放且验收合格。、 3inspectionpasses and set around foundation Gray Line has been二、操作要点key points for operation1、 基坑土方开挖采用履带式单斗挖掘机进行开挖，挖出的土方用自卸汽车运输到指定的弃土地点。Use crawler shovel for foundation pit excavation,excavated earth istranspor

4、ted to designated site by dump truck2、 机械挖土时设专人指挥挖掘机施工作业，机械挖土到设计底标高上200mm的位置后用人工清理至设计的底标高。注意各基础底不同标高的控制。Assign specialist to directmechanical excavation.After excavator arrives 200mm above design elevation,resume excavation through manual work down to designed foundation elevation.Pay attention to e

5、levations of different foundation bases.3、在每个基坑底边设置排水沟和一个集水井。排水沟断面尺寸为0.3 0.3 米，沿基坑周边设置，排水沟底坡度5%流向集水井，集水坑尺寸为0.8 0.8 1.0 米（深）。集水坑内设污泥泵一只，当基坑内有水时，派专人做好坑内的排水降水工作。Set a drainage ditchand collecting well at the hemline of each foundation pit.Section dimension of drainage ditch is 0.3 0.3m, with 5% bottom

6、slope facing collectingwell.Collecting dimension is 0.8 0.8 1.0m(d).Fix a slime pump in collectingwell and send assigned people for dewatering in case of water deposit.三、质量标准quality standard1、开挖尺寸、坑底标高符合设计和规范要求。Excavation dimension and foundation bottom elevation conforms with design requirements an

7、d specificationsmooth,dustbe should bottom Pit边坡符合施工方案要求。虚土清理干净，坑底要平整，、 2cleared out,side slope conforms to construction plan.3、允许偏差：基坑底标高 -50mm，长度、宽度+200mm、-50mm，表面平整度20mm。Deviation allowance: bottom elevationof foundation pit is -50mm,width and depth+200mm、-50mm,surface evenness 20mm.四、成品保护end product protection1、基坑开挖完成后，做好排水工作，防止水浸泡。After foundation pit excavation,do drainage work to avoid drench2、开挖后放坡处用彩条布遮盖。Slope Department after excavation covered with striped cloth本交底记录共11条