地震作用下核电取水明渠导流堤稳定分析

摘要

Using the Canadian geotechnical engineering software Geo-slope, seismic analysis on the diversion dike of water intake channel for nuclear power plant is performed. Adopting the limit equilibrium method and the dynamic finite element method separately, the stability of the diversion dike is analyzed, and shape of the slip is given as well as the safety factors. The calculation results show that, under the seismic SL1, all the safety factors of the diversion dike are greater than 1, the dike is in a stable state not as same as SL2, which is less than 1 in some cases. The analysis can provide the design basis for the similar engineer.%采用岩土工程专业软件Geo-slope对某核电站取水明渠导流堤工程进行抗震稳定性分析.运用极限平衡法及动力有限元两种方法分析导流堤在地震作用下的稳定性,得出其在地震作用下的稳定安全系数及相应滑动面的位置.从安全系数可以看出,在SL1地震动作用下各工况导流堤的稳定安全系数均大于1,说明导流堤处于稳定状态；在SL2地震动作用下,安全系数出现小于1的情况,说明在极限安全地震动作用下(万年一遇),导流堤会出现滑动破坏.本分析可为类似工程提供设计依据.