CAJ | 학술논문

地震作用下岩质高边坡的稳定性历来是边坡稳定性研究中的重点，难度比较大。总结了对地震边坡进行工程地质分析的方法，并结合西藏某拟建水电站所在区工程地质条件，对地震作用下该水电站的边坡的稳定性进行工程地质分析；建立数值模型，采用有限差分程序FLAC 3D对地震作用下该边坡的动力稳定性进行分析。由工程地质分析可知，该边坡在地震作用下整体处于稳定状态；拟静力法计算可知，地震对该边坡的稳定性有一定影响；通过地震动力时程分析可知，地震对边坡顶部和坡面附近的影响较大，因而这些地方危险较大；同时还分析了地震波频率、振幅对稳定性的影响以及断层对地震波传播的影响规律。
지진작용하암질고변파적은정성력래시변파은정성연구중적중점，난도비교대。총결료대지진변파진행공정지질분석적방법，병결합서장모의건수전참소재구공정지질조건，대지진작용하해수전참적변파적은정성진행공정지질분석；건립수치모형，채용유한차분정서FLAC 3D대지진작용하해변파적동력은정성진행분석。유공정지질분석가지，해변파재지진작용하정체처우은정상태；의정역법계산가지，지진대해변파적은정성유일정영향；통과지진동력시정분석가지，지진대변파정부화파면부근적영향교대，인이저사지방위험교대；동시환분석료지진파빈솔、진폭대은정성적영향이급단층대지진파전파적영향규률。
The stability of rock slope under the effect of earthquake plays a significant role in slope stability study, which is difficult to analyze. The paper, based on the engineering geological conditions in the area where the hy-dropower station is to be located, analyzed the dynamic stability of the slope in combination with engineering ge-ology analysis. Then a numerical model was built based on real condition, and the analysis of the stability of the slope under earthquake action was conducted with finite difference program FLAC 3D. Through comparison, the results of numerical simulation verified the correctness of the conclusions of engineering geology analysis, and provided evidence for the design and construction of the hydropower station, also provided ideas for the similar slope seismic stability evaluation.