Abstract: A deep excavation supporting structure is location in the Donghu High-Tech Economic Development Zone of Wuhan City. The proposed excavation is close to a permanent slope with a height of 20 meters and the proposed excavation depth varies from 15 to 20 meters. When the excavation is completed, there is a 40 meters elevation difference between the crest of the slope and the bottom of the excavation. Therefore, the safety of the supporting structure and the excavation sequence area critically important. This paper presents a combined design of the excavation supporting structure combined with the high slope stability mitigations. The slope near the excavation is stabilized with the retaining wall and ground anchors and the excavation supporting structure is designed to use the prefabricated concrete soldier piles with ho rolled steel beams with ground anchors. The ground anchor design considers the impact of nearby high slope. During the construction. The deformation of the excavation supporting system and the adjacent soils are monitored and compared with the design values. The monitoring results indicate that the measured data are consistent with the predicted values. It is concluded that the design approach is reasonable and the project can provide a valuable reference for the future similar projects.

Key words: Prefabricated Concrete Pile with Hot Rolled Steel Beams, Anti-Slide Caisson, Ground Anchors, Slopes