The Dongjin butt end of the immersed tunnel on the east-west axis of Xiangyang City is sealed with concrete,which needs to be removed after the E6 and E5 pipe joints are connected.In order to solve the problems of narrow working space and high safety risk in the removal of concrete sealing doors,the method of drilling and coring and wire saw cutting is studied.This method uses coring machine and wire saw equipment to accurately locate the cutting point of the sealing door at the concrete end according to the actual situation and progress of the site construction,and removes the concrete block through jack pushing and excavator cooperation,which provides effective guidance for the removal of the concrete sealing door.
immersed tunnelconcrete sealing doordrilling and coringwire saw cutting
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