Heavy equipments of the construction technology of the open caisson method in the abnormal box foundation

In the complex foundation condition,high underground water level and building distributing densely in the around,the traditional construction method of large-scale underground reinforced concrete branching conduit of basic engineering commonly adopt earth excavation,foundation pit support,technology in concrete structure construction,so it can impact on normal use of existing buildings and structures.Based on the concrete engineering condition in the construction,we should research feasible construct project to ensure the safety of engineering structures and reasonable economy.The paper introduce terrain box of the construction technology of the open caisson method in the foundation in the 1# set water pumping stations of the third period engineering of the thermal power plants.