复杂地质条件下沉井施工的控制措施与分析

Control Measures and Analysis of Open Caisson Construction under Complex Geological Conditions

随着城市化步伐的加快,沉井工艺越来越多的被用于城市市政工程项目中。沉井工艺虽然能很大程度上减少对周边环境的影响,但在复杂地质条件下,也存在着下沉困难、易发生倾斜等控制难点。通过前期的方案策划、参数计算与分析、预控措施,分析各种可能出现的问题,提前准备好各项技术措施,能较好地达到施工预期。通过上海某排海管压力井沉井法施工的总结,为类似工程提供一些经验。

With the acceleration of urbanization,the open caisson technology is increasingly used in the urban municipal engineering projects.Although the open caisson technology can greatly reduce the impact on the surrounding environment,there are also the control difficulties such as the sinking difficulty and easy inclination under the complex geological conditions.Through the previous scheme planning,parameter calculation and analysis,and pre-control measures,each possible problem is analyzed and various technical measures are prepared in advance,which can achieve the construction expectation better.The summary on the open caisson construction of a sea-discharging pipe pressure well provides some experience for the similar projects.