隧道浅埋岩堆体
?108大管棚超前支护施工工艺
编制 :
审核 :
彭酉项目经理部
二 00三年十一月三十日
目 录
1. 前言·····································2
2. 工程概况·································2
2.1 概述··································2
2.2 大管棚变更情况· ·······················3
2.3 大管棚超前支护方法· ···················4
3. 施工工艺·································7
3.1 测量放样······························7
3.2 钻孔··································9
3.3