摘要：Based on the mechanism that cement has the property of permeating sediment, and its condensation and accumulation are possible in the sediment, a series of indoor simulating infiltration tests were conducted. The effects of the ways of cement permeating sediment, the amount of cement, the permeation headwater, the texture of the sediment and the bulk density on the infiltration-reducing effect were researched and the mechanism is analyzed theoretically. The results show prelim-narily that:① The extent of infiltration-reducing in the way of interval 12h is larger obvious than that in the way of instant;®The more the amount of cement permeating sediment, the more obvious the infiltration-reducing effect is, but the extent is limited;®The higher the headwater of cement permeating sediment the smaller the sediment bulk density and the lighter the sediment texture, the greater the infiltration-reducing effect is. The results may provide a technical support for hinder- ing pollution of river migrating to groundwater through river sediment and theoretical basis for underground water pollution control projects to be more effective, time-saving and low-cost.
