1
目 录
1. 挖孔桩 .......................................................................... 4
1.1人工挖孔灌注桩施工工艺流程图 ....................... 4
2.钻孔灌注桩 .................................................................... 4
2.钻孔灌注桩 .................................................................... 5
2.1 回转钻成孔正循环清孔工艺流程图 ...................... 5
2.2 回转钻成孔反循环清孔工艺流程图 ...................... 6
2.3 冲击成孔正循环