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Crucial technologies in the design of Xiluodu Super High Arch Dam 被引量:3
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作者 Wang Renkun 《Engineering Sciences》 EI 2012年第2期35-44,55,共11页
Some super high arch dams (SHADs),like Xiluodu Arch Dam,after their heights reaching the magnitude of 300 m,confront lots of technical challenges in design and construction.Several crucial technologies of 6 SHADs will... Some super high arch dams (SHADs),like Xiluodu Arch Dam,after their heights reaching the magnitude of 300 m,confront lots of technical challenges in design and construction.Several crucial technologies of 6 SHADs will be reviewed and discussed in this and consecutive papers,including Xiluodu,Jinping I in China,Baktiary in Iran,etc.,on the topics of the research method,criterion for evaluation and engineering application of dam safety analysis and evaluation,reasonable dam base interface,dam shape optimization,comprehensive treatments of complex foundation,anti-seismic engineering,dam construction material,concrete placement and temperature control,instrumentation and monitoring of dam operation,etc.This paper will mainly focus on the overall safety of SHADs,reasonable dam base interface analysis and evaluation and their engineering application. 展开更多
关键词 溪洛渡拱坝 拱坝设计 技术 评价标准 抗震工程 安全分析 施工材料 混凝土浇筑
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Treatment design of geological defects in dam foundation of Jinping I hydropower station 被引量:1
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作者 Shengwu Song Xuemin Feng +1 位作者 Hongling Rao Hanhuai Zheng 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2013年第5期342-349,共8页
Jinping I hydropower station is one of the most challenging projects in China due to its highest arch dam and complex geological conditions for construction.After geological investigation into the dam foundation,a few... Jinping I hydropower station is one of the most challenging projects in China due to its highest arch dam and complex geological conditions for construction.After geological investigation into the dam foundation,a few large-scale weak discontinuities are observed.The rock masses in the left dam foundation are intensively unloaded,approximately to the depth of 150–300 m.These serious geological defects lead to a geological asymmetry on the left and right banks,and thus some major diffculties of dam construction are encountered.In this paper,the influences of geological defects on the project are analyzed,followed by the concepts and methods of treatment design.Based on the analysis,the treatment methods of the weak rock masses and discontinuities are carefully determined,including the concrete cushion,concrete replacement grids,and consolidation grouting.They work together to enhance the strength and integrity of the dam foundation.Evaluations and calibrations through geo-mechanical model tests in combination with feld monitoring results in early impoundment period show that the arch dam and its foundation are roughly stable,suggesting that the treatment designs are reasonable and effective.The proposed treatment methods and concepts in the context can be helpful for similar complex rock projects. 展开更多
关键词 Geological defects Treatment design Concrete cushion Concrete replacement grids Consolidation grouting Performance evaluation Jinping I hydropower station
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Analysis on Dam-Breaking Mode of Tangjiashan Barrier Dam in Beichuan County 被引量:7
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作者 HU Xiewen LUO Gang +2 位作者 LV Xiaoping HUANG Runqiu SHI Yubin 《Journal of Mountain Science》 SCIE CSCD 2011年第2期354-362,共9页
Tangjiashan landslide is a typical high-speed consequent landslide of medium-steep dip angle. This landslide triggered by earthquake took place in about semi-minute. The relative sliding displacement is 900 meters, so... Tangjiashan landslide is a typical high-speed consequent landslide of medium-steep dip angle. This landslide triggered by earthquake took place in about semi-minute. The relative sliding displacement is 900 meters, so average sliding speed is about 30 meters per second. The longitudinal length of barrier dam which is formed by high-speed landslide along river is 803.4 meters; and maximum width crossing river is 611.8 meters. And its volume is estimated about 20.37 million steres. Through detailed geological investigation of the barrier dam, together with early geological information before earthquake, geological structures of the barrier dam and its stability of upstream and downstream slopes are studied when water level reaches different elevations in condition of continual after shocks with seismic intensity of 7 or 8 Richter scale. On this basis, dam-breaking mode of barrier dam is discussed deeply. Thereby, analytic results provide significant guidance and advices to front headquarters of Tangjiashan barrier dam, so that some proper engineering measures can be implemented and flood discharge can be carried out well. 展开更多
关键词 大坝 地震地质资料 山体滑坡 斜坡稳定性 滑动位移 滑动速度 地质调查 地质结构
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