Abstract：Abstract：The compaction tests of earth-rock mixture with different gradations，coarse material contents and fragmentation ratios，are performed；and the influence of compaction effectiveness，compaction methods and equivalent treatment methods on earth-rock mixture compaction result are analyzed. The results indicate：(1) the good gradation sample has good compaction property；(2) when coarse material content exceeds 75%，the largest dry density almost remains the same；and the compaction work should not too strong；and (3) the results of equivalent replacement method is close to those of large-scale compaction test. In order to get a better compaction result，the above-mentioned factors are analyzed comprehensively.
