Abstract— This paper is based on a deep foundation pit project under the geological conditions of karst. The monitoring data is analyzed, and the deformation rule of the foundation pit is obtained. At the same time, the influence factors of foundation pit deformation are studied, and the relationship between the displacement of slope of foundation pit at different stages is studied. Get conclusions as following, in the excavation of the foundation pit, the different supporting forms of foundation pit have great influence on the horizontal displacement of foundation pit. The horizontal displacement deformation of slope at the excavation stage is larger, accounting for 68%~78% of total deformation. The horizontal displacement deformation of slope at the backfill stage is significantly smaller, accounting for 22%~32% of the total deformation.
Keywords— Foundation pit; deformation analysis, The foundation pit monitoring, Horizontal deformation of slope top, The vertical displacement of the slope.
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