【摘要】 为提高膨胀土边坡的稳定性,采用了土袋技术加固方法.利用FLAC3D软件,基于强度折减法,对边坡稳定性进行分析.结果表明,未经处理的膨胀土边坡,安全系数很低,滑移量大,边坡处于失稳状态,若采用土袋技术加固膨胀土边坡,边坡整体稳定性得到较大提高,滑移量大大减小,滑弧形态由浅层滑动过渡到深层滑动,边坡处于稳定状态,考虑土袋与土袋之间的接触,与不考虑土袋之间的接触效果相比,最大水平位移明显减小,安全系数增大,处理前与处理后膨胀土边坡滑动破坏位置没有发生变化,就在坡脚附近,说明土袋技术可用于加固膨胀土边坡.更多还原

【Abstract】 In order to improve the stability of expansive soil slope,the method of soil bag technology is adopted.The stability analysis could be carried out with FLAC3D based on strength reduction theory.The results of the study show that the safety factor is decreased and the maximum horizontal displacement is increased in comparison with expansive soil slope by soil bag technology.The slip shape is transformed into deep slip from superficial slip and the expansive soil slope by soil bag technology will be in stability.The maximum horizontal displacement is decreased and safety factor is increased compared with the situation when contact of the soil bags is not considered.When it is at foot of the expansive soil slope,the sliding failure of the expansive soil slope’s position has not changed when expansive soil slope is handled with soil bag technology and without the technology.The method of strengthening expansive soil slope by soil bag technology is feasible.更多还原