江垭水库大坝及近坝山体抬升发展趋势  

Development of uplift deformation of dam foundation and surrounding mountains of Jiangya water power station

作　　者：祁生文[1] 伍法权[1] 

机构地区：[1]中国科学院地质与地球物理研究所工程地质力学重点实验室,北京100029

出　　处：《岩土工程学报》2004年第2期259-262,共4页Chinese Journal of Geotechnical Engineering

摘　　要：江垭水利枢纽工程在水库蓄水后,大坝和附近山体发生大规模的抬升现象。为了研究水库运营期间库水位变化对大坝及近坝山体抬升变形的影响规律,预测这种变形的发展趋势,利用FLAC^3D进行了详尽的数值分析,揭示了水库蓄水是导致大坝及近坝山体抬升的本质原因,说明循环的蓄水和排水过程中坝基和近坝山体没有显著的不可逆抬升变形,并且预测水库在未来运营期间,最大抬升量和目前最高库水位情形下的最大抬升量应该相当。A big uplift deformation with happened only on rare occassions in the history of hydro-power projects in the world has taken place in the dam body and the surrounding mountains of Jiangya hydropower station after impoundment. In order to explore influence of water level change of the reservoir to the uplift deformation and the forecast the development of the uplift deformation,FLAG3D is applied to simulate the problem. By elaborate numerical simulation, it is shown that cycling impoundment and drainage will not obviously induce irreversible uplift deformation, and the maximum uplift deformation during the service of reservoir should approximately correspond to the maximum uplift deformation under the highest water level of the reservoir.

关 键 词：江垭水利枢纽工程 蓄水 抬升变形 排水 坝基 水位 三维数值模型 

分 类 号：TV13[水利工程—水力学及河流动力学]