In order to improve the liquidation sand and silt crossbedded foundation synthetically in a highway,the improved sand bag wells have been used.

• 某高速公路软粘土与可液化砂土互层地基用加强型袋装砂井进行处理,但标准贯入试验检测结果显示此方法对可液化砂层的挤密效果不明显。