Based　on　the　engineering　prototype　of　new　Jinjishan　Tunnel　in　Fuzhou　2nd　ring　road,　the　1/30　downscale　ground-lining　model　was　fabricated.　Then　the　earthquake-simulating　tests　were　carried　out　on　the　shaking　table　apparatus　to　explore　the　seismic　responses　and　seismic　properties　of　large　section　mountain　tunnel.　The　time-domain　analyses　on　the　test　results　show　that　the　PHA　(peak　horizontal　acceleration)　amplification　coefficients　of　ground　increase　non-linearly　with　elevation.　The　elevation　effect　of　ground　takes　“S”　form,　which　distinguishes　itself　from　other　regular　ones.　The　PCP　(peak　contact　pressure)　oscillation　coefficients　at　the　sidewall　and　the　arch　of　lining　increase　almost　linearly　with　the　seismic　intensity,　which　implies　that　the　sidewall　and　arch　carry　a　majority　of　seismic　loading　under　large　ground　motion　excitation.　The　frequency-domain　analyses　on　the　test　results　show　that　the　existence　of　large　section　tunnel　changes　the　seismic　property　of　original　ground　significantly.　The　1st　and　2nd　dominant　frequencies　reflect　the　seismic　properties　of　original　ground　and　lining　structure　respectively,　and　both　of　them　decrease　gradually　with　the　repeated　excitations.　Meanwhile　the　frequency　components　around　the　2nd　dominant　frequency　are　augmented　significantly　when　the　seismic　wave　passing　through　the　model　from　bottom　to　surface.　©　2019