复杂地质条件下沉井施工的控制措施与分析

摘要:

随着城市化步伐的加快,沉井工艺越来越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。本文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。

Abstract:

SWith the acceleration of urbanization, open caisson technique is increasingly used in urban municipal engineering projects. Although the open caisson technique can greatly reduce the impact on the surrounding environment, it also has control difficulties such as sinking difficulty and easy inclination under complex geological conditions. Through preliminary scheme planning, parameter calculation and analysis, pre-control measures, analysis of various possible problems and preparation of various technical measures in advance, the construction expectation can be better achieved. This article summarizes the open caisson construction of a row of submarine pipeline pressure well in Shanghai, and provides some experience for similar projects.