滨海地区污水干管顶管沉井倾覆事故分析

On analysis of sunk well and overturning in pipe jacking in main sewer of coastal areas

对滨海软土地区顶管施工过程中发生的顶管工作沉井倾覆原因进行了分析,对比了各参数对提高沉井后背墙土体稳定性的影响强弱,提出增加沉井高度是有效的措施,并分析了内在的原因,对减少此类事故的发生有一定意义。

The paper analyzes reasons of the sunk well and overturning in the main sewer in the construction process of the soft soil of coastal areas,compares the influence of all sorts of parameters on improving the stability of the soil wall of the sunk well,points out the addition of the height of the sunk well can be an effective measure,and indicates the internal reasons,so as to reduce the similar accidents.