软土地区采用大开挖埋设排水管道的技术措施

Technical Measures for Laying Drainage Pipeline by Open Cut Method in Soft Soil District

在软土地区大开挖埋设排水管道 ,管道埋设后往往会出现接口开裂 ,不仅造成施工阶段闭水试验检测失败 ,而且竣工运行中因管周土体随地下水渗入管内而泄空 ,导致地面坍塌和造成对地下水的污染。该文提出管道接口与管基采用刚、柔性连接和与刚性相匹配的地基处理方案进行防治 ,以策安全运行。

After the drainage pipes were laid in soft soil district by open cut method, cracks often occur at the joints. These cracks not only make the water tight tests to fail during construction, but also cause the ground to collapse, due to the soil around the pipes permeating through these cracks with underground water, and underground water pollution. So, the adoption of rigid or flexible connections to pipe joints and pipe bedding, as well as the scheme of ground base treatment matched with rigid foundation are suggested for the sake of prevention and safe operation.