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溪洛渡特高拱坝建设的岩石工程关键技术_樊启祥要点详解.pdf

溪洛渡特高拱坝建设的岩石工程关键技术_樊启祥要点详解.pdf

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31 10 Vol.31 No.10 2012 10 Chinese Journal of Rock Mechanics and Engineering Oct.2012 ( 100038)   TV 31                  A 2012 KEY TECHNOLOGIES OF ROCK ENGINEERING FOR CONSTRUCTION OF XILUODU SUPERHIGH ARCH DAM FAN QixiangZHOU ShaowuLI Bingfeng (China Three Gorges CorporationBeijing 100038China) Abstract In each design phasethorough studies were conducted to explore the key technical issues of rock engineering for the superhigh arch dam of Xiluodu hydropower projectallowing the physical shape and structural design of the arch dam to fit the geological conditions of the dam site. In view of changes in the geological conditions at the foundation of the dam on the riverbedthe designs of extending foundation surface excavation and dovetailing the dam body and foundation rock on both upstream and downstream sides were introducedallowing the arch dam and foundation to fit each other and improving the stress conditions of the dam body and foundation. 3D geomechanics model test and finite element analysis results indicate that the Xiluodu superhigh arch dam and its foundation are in good conditions both in construction and operation periods. The monitoring data show that the behaviors of dam and foundation correspond with regular pattern. Thedigital dam initiative for the Xiluodu projectwhich is based on the theory of total life cyclehas lent strong support to construction process control and decision-making this ensures all work conditions in the

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