In order to improve the integrity and strength of rockfill material as well as the seismic stability of earthrockfill dams, a new technique of using polyurethane foam adhesive (PFA)reinforced rockfill material to reinforce the shallow zone beneath the dam crest and slope, based on analysis of seismic disasters and aseismic measures of high earthrockfill dams, is presented. The effects of PFA on the mechanical behavior of rockfill material were studied through static and dynamic triaxial tests. The test results show that PFA significantly increases the cohesion of rockfill material, slightly increases the dynamic elastic modulus of rockfill material, and significantly reduces the residual strain of rockfill material. The PFAreinforced rockfill material show good seismic behavior. The numerical results regarding a high earthrockfill dam show that, after use of the proposed technique, the minimum safety factor against sliding during an earthquake is increased by 10％, indicating that the seismic stability of the dam is improved.