边坡锚杆框架防护施工方案

国道G210都匀小围寨至深河桥公路改造工程都匀段

路基高边坡防护施工专项方案

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国道G210都匀小围寨（经阳安）至深河桥公路改造工程 路基高边坡防护施工方案

目录

第一章 概述 ..................................................................................................................................... 1 一、工程概况 ................................................................................................................................... 1 二、编制依据 ................................................................................................................................... 2 三、重点、难点分析及相应对策 ................................................................................................... 2

1、重点分析 ............................................................................................................................. 2 2、难点分析 ............................................................................................................................. 2 3、采取对策 ............................................................................................................................. 2

（一）危险源的识别 ....................................................................................................... 2 （二）危险源危害分析 ................................................................................................... 3 （三）设置高边坡监测点进行监测 ............................................................................... 3 （四）拟定与编写应急救援预案。 ............................................................................... 4

第二章 施工部署 ........................................................................................................................... 4 一、施工项目管理机构 ................................................................................................................... 4 二、施工总进度计划 ....................................................................................................................... 5 三、资源配置 ................................................................................................................................... 5 第三章 施工工艺 ............................................................................................................................. 6

（一）施工准备 ....................................................................................................................... 6 （二）高边坡的防护施工 ....................................................................................................... 7 （一）普通锚杆施工 ............................................................................................................... 7 （三）预应力锚杆施工 ......................................................................................................... 16 1.钻孔...................................................................................................................................... 16 2.锚杆制作 .............................................................................................................................. 16 3.灌浆...................................................................................................................................... 17 4.预应力张拉 .......................................................................................................................... 17 （四）锚杆框架梁 ......................................................................................................................... 17

1.施工工艺流程 ...................................................................................................................... 17 2. 锚杆施工方法 .................................................................................................................... 18

2.1锚杆孔测量放线 ....................................................................................................... 18 2.2钻孔设备 ................................................................................................................... 18 2.3钻机就位 ................................................................................................................... 19 2.4钻进方式 ................................................................................................................... 19 2.5钻进过程 ................................................................................................................... 19 2.6孔径孔深 ................................................................................................................... 20 2.7锚杆孔清理 ............................................................................................................... 20 2.8锚杆孔检验 ............................................................................................................... 20 2.9锚杆体制作及安装 ................................................................................................... 21 2.10锚固注浆 ................................................................................................................. 21 3. 框架梁施工 ........................................................................................................................ 22

3.1施工准备 ................................................................................................................... 22 3.2测量放样 ................................................................................................................... 22 3.3基础开挖 ................................................................................................................... 22 .3.4钢筋绑扎 ......................................... …… 此处隐藏：7981字，全部文档内容请下载后查看。喜欢就下载吧 ……