摘要
采用流固耦合结合强度折减方法分析重力坝深层抗滑稳定性,可以准确考虑坝基渗流场的分布以及孔隙水压力对坝基抗滑稳定性的影响,且不需假设滑动面,可以自动搜索滑动面位置。向家坝水电站的泄12坝段坝基岩体质量较差,且发育有多条倾向下游的软弱岩层和软弱夹层,对坝基的深层抗滑稳定不利。本文应用FLAC软件对该坝段坝基的深层抗滑稳定性进行了流固耦合分析。通过强度折减方法研究了坝基的渐进破坏过程,并得到坝基的深层抗滑稳定安全系数。
Using fluid-structure interaction analysis method and strength reduction method to analyze the deep anti-sliding stability of a gravity dam foundation has several advantages, such as, to be able to consider the seepage field distribution and pore pressure effect on anti-sliding stability accurately and to search sliding surfaces automatically. Several faults exist under the foundation of the 12th monolith of the Xiangjiaba concrete gravity dam with weak rock beddings and large scale fissures inclining downstream. The deep anti-sliding stability of this monolith foundation was analyzed in terms of fluid-structure interaction by applying the program FLAC. The progressive process of failure was simulated and the safety factor was derived by using the strength reduction method.
出处
《中国水利水电科学研究院学报》
2010年第1期11-17,共7页
Journal of China Institute of Water Resources and Hydropower Research
关键词
向家坝
深层抗滑稳定
流固耦合
强度折减
FLAC
Xiangjiaba dam
deep anti-sliding stability
fluid-structure interaction
strength reduction method
FLAC program
