Mud-Water Shield with Pressure to Replace the Cutter Barrel Gate Technology Research
Mud-water shield construction process of normal pressure tool changer cutter plate due to frequent tool change will cause wear and tear of the cutter barrel gate,when replacing the cutter barrel gate,the soil around the cutter barrel gate needs to be in a relatively stable state,otherwise,it will cause problems such as landslides or water surges,and may even lead to safety accidents such as flooding of the shield machine.Taking the Heyan Road river crossing in Nanjing as the background of the project,the construction difficulties of replacing the cut-ter barrelled gate under pressure were studied and solved,including the blocking of groundwater,the formation of mud film,and the stabilization of air pressure in the silo,etc,the construction operation procedures including the production of water stopping ring,the formation of mud film,and the replacement of the cutter barrelled gate un-der pressure were put forward,and the final construction results were good.
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