关键词: 复合地层, 基坑监测, 水平位移, 支撑轴力

Abstract: This paper presents the evaluation of the construction monitoring data of a deep excavation in the complicated soil and rock conditions. The deformation of the supporting structures, ground subsidence and the axial force data are statistically analyzed. The results indicate that these data are closely correlated, and they are the results from the subsurface conditions, excavation sequence and construction plan. Smaller deformation and axial force are observed in soil strata with better geotechnical properties. When the excavation reached the design elevations, the internal strut support and concrete floor covering the excavation should be placed as soon as possible to avoid the excessive exposure of the excavated ground in the ambient environment.