Practice of monitoring engineering for deep soft soil foundation pit

Abstract:

In the geomorphic areas of alluvial-plain and limno-lacustrine plain in Zhejiang， thick soft soil strata are widely distributed. Due to the engineering characteristics of soft soil， during the construction of foundation pit excavation， it is extremely easy to cause problems such as excessive lateral deformation of the soil around the foundation pit and settlement exceeding the allowable value. The whole-process monitoring of the foundation pit project by a scientific and standardized manner are of great importance for ensuring the safety of the foundation pit project. Taking a foundation pit project in Yuecheng District， Shaoxing City as an example， this paper arranges 7 categories of monitoring items for the foundation pit project， designs the layout and monitoring methods of monitoring points according to specifications， and scientifically and reasonably analyzes the foundation pit monitoring data， providing key monitoring data support for the project construction and ensuring the safe and smooth progress of the foundation pit project. Finally， combined with the practical case of this foundation pit monitoring project， the key issues that need to be paid attention to in each stage of the foundation pit monitoring process are summarized and analyzed.