摘要
针对向家坝水电站坝基地质条件的复杂性,采用弹塑性块体单元法计算坝体与复杂基岩的位移和应力,并运用间接法分析坝体与坝基系统的深浅层抗滑稳定性及破坏演变过程,得到在未采取工程加固措施前系统的整体稳定安全度至少有2.5的结论。研究表明,对于复杂地质条件下大坝地基系统的应力、变形和稳定性问题,块体单元法是一种适用且有效的分析方法。
In consideration of the complicated geological condition of the Xiangjiaba hydropower station, displacement and stress of the dam body and its foundation were calculated with the elastoplastic block dement method. Furthermore, the anti-sliding stability at deep and shallow layers and failure evolution process in dam body and dam foundation were analyzed by use of the indirect method. It is concluded that, without adoption of any reinforcement measures, the integral stability safety degree reaches at least 2.5, and the block dement method is a practical and effective way to analyze stress, deformation and stability of dam foundation system under complicated geological condition.
出处
《水利水电科技进展》
CSCD
北大核心
2008年第2期47-50,58,共5页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金委员会
二滩水电开发有限责任公司雅砻江水电开发联合研究基金(50539030)
关键词
重力坝
抗滑体稳定性
弹塑性块体单元法
间接法
向家坝水电站
gravity dam
anti-sliding stability
elastoplastic block dement method
indirect method
Xiangjiaba hydropower station
