近年来在日本、瑞典、美国、荷兰等国采用生石灰桩及深层搅拌法加固高塑性软粘土地基,取得十分满意的效果。其原理是生石灰在高塑性软粘土中有四种效能:(1)生石灰吸收土中的水份约相当其重量的32%;(2)生石灰吸收水份以后,体积约增加一倍; In recent years in Japan, Sweden, the United States, the Netherlands and other countries using lime pile and deep mixing method to reinforce the high plasticity soft clay foundation, and achieved very satisfactory results. The principle is that quicklime has four efficacies in high plasticity soft clay: (1) the lime in the absorbed lime soil accounts for about 32% of its weight; (2) the lime volume approximately doubles in volume after absorbing moisture;