沁源永和水电站大坝基础固结灌浆试验方案.docVIP

目 录 目录····························································2 1.编制依据························································2 2.试验目的和任务··················································2 3.试验地段的选定和布孔············································2 4.灌浆试验工艺程序及安排··········································2 5.施工步骤························································2 5.1测定孔位······················································2 5.2钻孔··························································2 5.3洗孔··························································3 5.4压水··························································3 5.5制浆··························································3 5.6灌浆··························································4 5.7灌浆孔封孔····················································5 5.8特殊情况处理··················································5 5.9灌浆试验质量检查··············································5 6.灌浆试验中的质量控制············································6 6.1钻灌前质量控制················································6 6.2灌浆过程质量控制··············································6 6.3灌浆结束后质量控制············································7 7.安全管理·······················································7 8.灌浆试验劳力组合···············································7 9.灌浆试投入的主要机械设备·······································7 10.试验成果总结···················································8 附:固结灌浆试验孔孔位布置示意图(单位:m) 1.编制依据 1、《水工建筑物水泥灌浆施工技术规范》（DL/T5148-2012） 2、《沁源县永和水电站工程施工合同》技术条款 3、施工现场实际情况 4、我局在其他类似水利工程中的施工经验。 2．试验目的和任务 由于各地区的地质条件不同，工程要求各异，故以往工程的施工经验只能供参考，而不能机械地搬用，所以施工前必须选择与实际灌浆区相似的地段作为灌浆试验区，以此来得出准确的施工参数（如灌浆压力、浆液级配等）指导生产。 3．试验地段的选定和布孔 3．1试验地段的选定 根据灌浆工程施工图纸的要求，由业主、设计、监理、施工单位共同议定，经现场设代和监理工程师的指示，固结灌浆施工前，选定在坝基固结灌浆施工位于 区域内进行固结灌浆试验，该试验段经质量检查合格后，同时也可作为坝基固结灌浆工程施工的一个组成部分。 3．2试验孔位的布置 固结灌浆试验孔布置见附图。 4．灌浆试验工艺程序及安排 4．1固结灌浆试验工艺流程见下图： 钻孔灌浆的施工程序是：Ⅰ序孔 Ⅱ序孔 检查孔 4．2灌浆试验的时间安排 固结灌浆试验的开始时间在坝基相应部位的混凝土底板达到50%的设计强度 后进行。 固结灌浆施工。 5．施工步骤 5．1测定孔位