It is shown that underground group cavities significantly amplify the surface ground motion nearby.
数值结果表明，地下洞室群对附近地面运动具有显著的放大作用。
The impact of coal mine goaf on seismic surface ground motion and its dynamic stress distribution around the tunnel was investigated.
研究了煤田采空区对地面地震动的影响以及采空巷道的动应力分布。
The notable torsion effects of the surface ground motion above the alluvial valley are illustrated and the torsion effects become stronger as the frequency of the incidence is higher.
沉积盆地地表运动有强烈的扭转效应，并且此扭转效应随盆地变软和入射波频率的增高而增强。
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