在公路软基处理过程中 ,如公路上空有高压线穿越 ,则往往因高压线下净空不够使袋装砂井无法施工 ,采用其它处理方式时 ,往往导致处理费用大幅上升。本文介绍了套管接驳的方式施工袋装砂井的工艺 ,经济可行 ,可供同行借鉴。 In the process of soft ground treatment, if there is a high-voltage line over the highway, it is often not possible for the bagged sand tank to be constructed due to insufficient headroom under the high-voltage line. When other treatment methods are adopted, treatment costs often increase substantially. This article introduced the method of casing connection to construct the bagged sand well, which is feasible and feasible for the counterparts to learn from.