水电工程高陡边坡全生命周期安全控制研究综述
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摘要
库坝安全是水电工程成败的关键,高陡边坡规模巨大、服役时间长、安全标准高,设计、施工与运行的难度世界罕见,已成为制约水利水电工程建设与运行安全的关键科学技术难题。在回顾研究现状的基础上,紧扣高陡边坡性能演化与安全控制这一主题,以全生命周期为研究主线,阐明高地应力区高陡边坡岩体工程作用机制与效应、复杂环境下高陡边坡变形与稳定性演化机制、高陡边坡全生命周期性能评估与安全控制理论等关键科学问题及其重点研究内容,论述水电工程高陡边坡全生命周期安全控制研究的学术思路与技术路线,介绍部分阶段性研究成果,对高陡边坡开挖锚固与渗流控制等工程作用效应、高陡边坡岩体时效力学特性、边坡与坝体–库水相互作用与稳定性演化机制以及高陡边坡全生命周期性能评估与安全控制等进行展望。
In hydropower engineering,the engineered slopes on both river sides are characteristics of large scale,high and steep geometry,long service life and high stabilization requirement.The design,construction and safe operation of the high-steep rock slopes has been a key technological issue in hydropower projects.Following a literature review,this study discusses the scientific problems associated with the life-cycle safety control on high-steep rock slopes,including the engineering disturbance effects of high-steep slope rock masses in high geostress condition,the mechanisms of high-steep slope deformation and stability evolutions in harsh environment,and their life-cycle performance evaluation and safety control theory,etc.The scientific ideas and technology road map for researches on this topic are presented and some preliminary results are illustrated.A prospect is made for researches on the engineering disturbance effects induced by high-steep slope excavation,reinforcement and seepage control,the time-dependent mechanical properties of high-steep slope rock masses,the interactions among slopes,dams and reservoirs,the mechanisms of slope stability evolution,and the life-cycle performance evaluation and safety control of high-steep rock slopes,etc.
引文
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