在日本的陆地和海洋工程建设中,软质冲积粘土地基十分常见,这种地基的柔软及高压缩性容易引发沉降和失效。砂质土壤具有相对较好的抗压缩性能,但在地震作用下,松散和饱和状态的砂质土壤也会发生液化。日本每年发生许多地震,如1995年阪神地震及2011年日本东北大地震都引发了人道主义危机,导致了巨大的经济损失。发生在松散和饱和砂层中的液化效应,会引起基础设施的巨大损害。多年来,液化控制对减轻地震灾害的重要性一直被强调,开发了很多基于各种原理的地基加固技术以减轻地震灾害。其中,20世纪70年代,日本开发的深层搅拌法(DMN)作为原位水泥稳定技术之一,经常被用来改进粘性和砂质土壤。近期,网格类型的DMM还被用以防止的土壤液化,其中,网格由稳定的墙柱组成,在地震过程中通过限制土壤颗粒的运动以防止超孔隙压力的产生。改良方法的效果首先在1995年的阪神地震中被验证合理。本文简要介绍了深层搅拌法在防震减灾中的一些应用。 In Japan’s land and marine engineering, soft alluvial clay foundations are common, and the softness and high compressibility of such foundations tend to cause subsidence and failure. Sandy soils have relatively good compressive resistance, but loosen and saturated sandy soils can liquefy under earthquake action. Every year, many earthquakes in Japan, such as the Hanshin Earthquake in 1995 and the Tohoku Earthquake in Japan in 2011, have triggered a humanitarian crisis that has caused enormous economic losses. Liquefaction, which occurs in loose and saturated sand, can cause huge damage to infrastructure. Over the years, the importance of liquefaction controls to mitigate earthquake disasters has been highlighted and many ground-based reinforcement techniques based on various principles have been developed to mitigate earthquake disasters. Among them, the deep mixing method (DMN) developed by Japan in the 1970s, as one of the in-situ cement stabilization technologies, is often used to improve sticky and sandy soils. Recently, grid-type DMMs have also been used to prevent liquefaction of the soil, where the grid consists of stable studs that prevent excess pore pressure by limiting the movement of soil particles during earthquakes. The effect of the improved method was first validated in the 1995 Hanshin earthquake. This article briefly introduces some applications of deep mixing method in earthquake disaster reduction.