It is reported that the long-term seepage of shield tunnel often results in significant settlements of ground surface and tunnel. A calculation method which meets the stiffness requirements of shield tunnel is firstly proposed to simulate the partial drainage of tunnel. The distribution of pore water pressure of soils around the tunnel

ground surface and tunnel settlement as well as tunnel deformation are investigated by considering different joint leakages in the context of the same magnitude of water inflow at steady state. The results indicate that the pore water pressure distribution

the settlement and tunnel deformation change significantly with variation of location of joint leaking. The pore water pressure around the tunnel decreases obviously when the leaking joint close to the tunnel invert

which results in larger ground surface and tunnel settlement. The tunnel will not only squat with time due to joint leaking

but occur horizontal displacement induced by unbalance loads. The distribution of pore water pressure

ground surface and tunnel settlement and tunnel deformation are all significantly different from those obtained by equivalent uniform drainage analysis. Finally

it is shown that the calculation without considering the partial drainage can not properly model the long-term behavior of the shield tunnel.