CAJ | 학술논문

　　应用有限差分软件 FLAC2D中两相流分析模块建立了非饱和土边坡的数值模型，并进行了考虑降雨入渗影响的渗流场及稳定性分析。结果表明：降雨强度较大的情况下，雨水入渗主要引起边坡表层的饱和度增加；而降雨强度较小时，雨水更容易入渗到边坡的内部；降雨持时相同时，边坡的剪应变增量随着降雨强度的增大而增大；强降雨条件下，边坡的位移较大，其中边坡水平向位移随着高程的减小而增大，而竖直向位移随着高程的减小而减小；随着降雨持时的增加，边坡的位移不断增大，安全系数不断减小。
　　응용유한차분연건 FLAC2D중량상류분석모괴건립료비포화토변파적수치모형，병진행료고필강우입삼영향적삼류장급은정성분석。결과표명：강우강도교대적정황하，우수입삼주요인기변파표층적포화도증가；이강우강도교소시，우수경용역입삼도변파적내부；강우지시상동시，변파적전응변증량수착강우강도적증대이증대；강강우조건하，변파적위이교대，기중변파수평향위이수착고정적감소이증대，이수직향위이수착고정적감소이감소；수착강우지시적증가，변파적위이불단증대，안전계수불단감소。
The paper built the numerical analysis model of the side slope along certain highway,using the two-phase flow analysis module of the finite difference software -FLAC2D . On this basis,seepage field and stability analysis was conducted with the consideration of rainfall infiltration influence. The result indicated that in case of heavy rainfall,the infiltration mainly resulted in a saturation increase of the slope surface; while for light rainfall,the water is more likely to saturate into the internal structure of the slope. Also for the same rainfall duration,the shear strain increment of the slope rise with the growth of rainfall. The analysis also found that under heavy rainfall,the displacement of the slope is comparatively large,in which the horizontal displacement goes up,while the vertical displacement goes down,with the decrease of elevation. At the same time, the increase of rainfall duration enlarges the slope displacement,but brings down the safety coefficient.