- Water and earth pressures are key factors to the stability of foundation pit.
- Dewatering is always necessary in foundation pit excavation and hand dig piles.
- Earthwork workers are strictly forbidden to have rest in the foundation pit.
- Cement soil mixing pile plus anchor bolts is a new supporting technology for foundation pit .
- Deep soil movement monitoring is a very important task during the excavation and sustainment of large foundation pit.
- The groundwater control is the key technique of the construction of large deep foundation pit.
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