当大型循环水泵房的沉井位于淤泥质土层上,淤泥质土层厚度达到了20m以上,需采用积极的地基处理措施和合适的施工方法,来控制沉井下沉和保护桩基基础,同时需采取一些辅助措施来预防沉井产生突沉、偏沉滑移、井内涌水涌泥和超沉不止等现象。本文主要对淤泥质土层中的大型泵房沉井设计和下沉控制进行了详细介绍,可对类似工程设计和施工提供参考和借鉴。 When the caisson of a large circulating water pump house is located on the silt layer, the thickness of the silt layer reaches more than 20m. Active foundation treatment measures and appropriate construction methods are needed to control the caisson sinking and protect the pile foundation. At the same time It is necessary to take some auxiliary measures to prevent the caisson from sudden subsidence, partial slippage, well water gushing and excessive sinking phenomenon. This paper mainly introduces the design of caisson and sinking control of large pump house in silty soil, which can provide reference and reference for the design and construction of similar projects.