桩基础施工方案编制：审核：审批：*******工程有限公司********项目经理部二零一七年二月目录1、编制依据、编制范围.......................................................................................61.1编制依据....................................................................................................61.2编制范围....................................................................................................62、工程概况...........................................................................................................62.1工程概况....................................................................................................62.2主要工程内容............................................................................................72.3工程特点....................................................................................................72.4控制工程及难点工程................................................................................73、施工方案...........................................................................................................84.桩基溶洞处理方案.............................................................................................95.溶洞处理措施...................................................................................................105.1.片石粘土筑壁.........................................................................................105.2.灌注水泥混合物.....................................................................................115.3.钢护筒跟进.............................................................................................115.3.1.单护筒跟进...................................................................................1215.3.2.双护筒跟进.................................................................................135.4.注浆.........................................................................................................165.4.1.注浆材料.......................................................................................175.4.2.注浆设备.......................................................................................185.4.3.注浆处理分类...............................................................................185.4.4.注浆方法.......................................................................................195.4.5.注浆结束标准...............................................................................205.4.6.注浆施工步骤及施工重点...........................................................206.溶洞处理方法...................................................................................................216.1.穿越溶洞顶板冲孔方法.........................................................................216.2.穿越溶洞填充物处理方法.....................................................................226.3.穿越溶洞空穴处理方法.........................................................................227.特殊情况的处理方法.......................................................................................227.1.覆盖较厚砂层或淤泥层.........................................................................237.2.溶洞底部岩面倾斜.................................................................................237.3.三层以上串珠状溶洞......................................
