CAJ | 학술논문

某水电站尾水洞边坡在工程开挖后有多条缓倾坡外断层被切出坡面，稳定性状况恶化。为了准确评价这些断层的稳定性状况，以相互切割断层为边界建立地质模型，在地质模型的基础上建立三维数值模型，利用 FLAC3D软件模拟边坡在工程开挖后应力应变的变化情况，进而评价边坡在开挖后的稳定性情况。最终结果显示边坡在开挖后处于欠稳定状态，为工程边坡后续的支护措施设计提供了依据。
모수전참미수동변파재공정개알후유다조완경파외단층피절출파면，은정성상황악화。위료준학평개저사단층적은정성상황，이상호절할단층위변계건입지질모형，재지질모형적기출상건립삼유수치모형，이용 FLAC3D연건모의변파재공정개알후응력응변적변화정황，진이평개변파재개알후적은정성정황。최종결과현시변파재개알후처우흠은정상태，위공정변파후속적지호조시설계제공료의거。
After excavation ,there are some flat dipping faults cut out from the slope of a hydropower station ’s tailwater tunnel ,the stability condition is deteriorated .In order to evaluate the fault stability accurately ,the geological model is set up with the fault boundary cut each other ,and the 3D numerical model is set up on the basis of the geological model ;The FLAC3D software is used to simulate the changes of stress and strain after engineering excavation ,so as to evaluate the stability of the excavated slope .The final conclusion shows that the slope is in unstable state after excavation ,which would provide basis for the follow-up supporting measure design of engineering slopes .