Seismic isolation technology is a new method developed in recent decades.It has been applied widely in ground-structures and achieved remarkable efficiencies.Based on Newmark′s step-by-step implicit integration FEM method and viscoelasticity artificial boundary theory

this paper investigated two kinds of shock absorption measures

which are shock absorption layer setting and grouting in the surrounding rock within certain influencing distances to the linings during the construction of water-conveyance tunnel.Moreover

the shock absorption effects

applicability and mechanisms are also analyzed.The results show: in soft soil

the stress in the lining of the water-conveyance tunnel decreases by using of the two measures

which is liable to protect the lining;rock grouting is a more effective shock absorption measure and the aseismatic capability of surrounding rocks can be improved.For water-conveyance tunnel in hard rocks

the shock layer is more effective.The results can provide useful reference for the aseismatic design of water-conveyance tunnel.