向家坝水电站坝基深层抗滑稳定性的流固耦合分析

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。

Analysis on the deep anti-sliding stability of Xiangjiaba dam foundation by using fluid-structure interaction analysis

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 downstre...