大屯水库、岭落水库、官路水库为比较典型的分散性土,为保证堤坝安全,需要鉴定其分散性等级并进行改性加固。采用双密度计、针孔试验、碎块试验对几个工程的分散性图进行鉴别,确定了分散性等级。取该分散性土试样进行不同剂量的石灰改性试验,进行了改性后反滤试验,确定当石灰剂量达到1.5%时,改善效果最佳。改性土的反滤试验证明,改性土能满足工程需要,为类似工程提供理论借鉴和技术支持。 Datun Reservoir, Lingluo Reservoir and Guandu Reservoir are typical disperse soils. To ensure the safety of dams, the dispersibility grades of the dams should be identified and modified and reinforced. Using double densitometer, pinhole test, fragment test to identify the dispersion of several projects to determine the degree of dispersion. Take the disperse soil samples for different doses of lime modification test, after the modified filter test to determine when the lime dosage reached 1.5%, the best improvement. The test of modified soil shows that the modified soil can meet the engineering needs and provide theoretical reference and technical support for similar projects.