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本文通过经受唐山大地震考验的大石河尾矿坝实例剖析，揭示了细砂类尾矿沉积规律及其沉积密度随尾砂堆积坝增高和有效应力增加而显著增长的特点；并反映了该坝尾砂充填形成长滩面，控制低水位，降低浸润线等因素是坝体获得地震安全和稳定的重要特征．其目的旨在为我国地震区建造上游法尾矿高堆坝提供实践依据和筑坝经验．
This paper analyzes the Dashihe tailings dam through the test of Tangshan earthquake and reveals that the sedimentary law of fine sand tailings and its sediment density increase significantly with the increase of tailing sand dams and the increase of effective stress; Tail sand filling to form a long beach, control of low water level, reduce the saturation line and other factors is the dam to obtain seismic safety and stability of the important features. Its purpose is to provide practical basis and dam experience for the construction of the upstream tailing dam.