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Pipe jacking has become a popular method in drainage construction in Hong Kong.However,the variedground conditions encountered in reclaimed land may pose severe problems to pipe jacking operation.This paper presentsthe experience of using the full face slurry shield for pipe jacking in a reclaimed area.The study shows that the full faceslurry shield with a rock cutting head performs satisfactorily.To ensure the machine can work effectively in all groundconditions,other factors need to be considered including the rock cutting head being worn away,the hitting of under-ground structures,the sustainability of jacked pipes alignment,the associated ground settlement and the damage to thejacked pipes caused by the jacking pressure.
Pipe jacking has become a popular method in drainage construction in Hong Kong.However, the variedground conditions encountered in reclaimed land may pose severe problems to pipe jacking operation. This paper presentsthe experience of using the full face slurry shield for pipe jacking in a reclaimed land The study shows that the full faceslurry shield with a rock cutting head implements satisfactorily.To ensure the machine can work effectively in all groundconditions, other factors need to be considered including the rock cutting head being worn away, the hitting of under-ground structures , the sustainability of jacked pipes alignment, the associated ground settlement and the damage to thejacked pipes caused by the jacking pressure.