CAJ | 학술논문

某水电站泄洪洞进水口边坡为典型的岩质高陡开挖边坡，其稳定性对水电站的安全施工及运行影响重大。为此，建立了泄洪洞所在开挖高边坡的三维有限元模型，并运用有限差分软件进行稳定性分析计算；综合考虑边坡在天然、开挖、卸荷、暴雨蓄水、地震工况下的应力、应变的大小及分布状况，同时结合典型剖面边坡二维极限平衡计算，计算结果中的安全系数大小，综合分析判断泄洪洞进口边坡的稳定性状况；最后结合稳定性分析结果对边坡的加固措施进行了优化分析。成果为工程施工提供参考依据。
모수전참설홍동진수구변파위전형적암질고두개알변파，기은정성대수전참적안전시공급운행영향중대。위차，건립료설홍동소재개알고변파적삼유유한원모형，병운용유한차분연건진행은정성분석계산；종합고필변파재천연、개알、사하、폭우축수、지진공황하적응력、응변적대소급분포상황，동시결합전형부면변파이유겁한평형계산，계산결과중적안전계수대소，종합분석판단설홍동진구변파적은정성상황；최후결합은정성분석결과대변파적가고조시진행료우화분석。성과위공정시공제공삼고의거。
The intake slope of the spillway tunnel of a hydropower station is a typical high steep rock excavation slope.Its stability has a significant impact on the safe construction and operation of the station.In this research,3-D finite element model is established for the slope and stability analysis is conducted by using finite difference soft-ware.The stress,strain,and the size and distribution of plastic zone in natural condition,excavation and deloading condition,rainstorm and seismic conditions are comprehensively considered in the model.Furthermore,according to the safety factor from two-dimensional limit equilibrium calculation for typical profile,the slope stability is deter-mined.Moreover,the reinforcement measures are optimized based on the stability calculation results.