Key points of comprehensive pipe trench construction

The working space of foundation pit excavation is narrow and there are many cross-working procedures. There are many construction teams such as foundation pit excavation construction team, supporting cement-soil mixing pile construction team and precast pipe pile construction team working at the same time, which has the influence of cross-operation and needs coordination.

Construction difficulties of common ditch

The geological conditions are complex, and most of them are backfill soil recently, which has not achieved effective consolidation. Preventing foundation settlement and waterproofing are difficult projects in construction. The main control project of underground common ditch is the construction of prefabricated pipe gallery, which accounts for 72.3% of the total engineering quantity of pipe gallery. Therefore, it is difficult to cast-in-place important joints, prefabricate standard joints and construct the joint between cast-in-place and prefabrication.