CAJ | 학술논문

基于饱和-非饱和渗流理论与非饱和土的抗剪强度理论，研究了降雨强度、降雨历时等降雨要素对土质边坡安全系数的影响规律，并且重点对短时强降雨、长时弱降雨2种降雨形式进行了对比分析。结果表明：在饱和渗透系数一定的情况下，安全系数随着降雨强度、降雨历时的增加而不断减小，但在降雨结束后，安全系数又随时间的增长开始增大；短时强降雨下边坡上部土体更容易达到饱和，而长时弱降雨对边坡土体的影响更大，两者的稳定性都大大降低，但长时弱降雨下的滑坡危害程度更大。
기우포화-비포화삼류이론여비포화토적항전강도이론，연구료강우강도、강우력시등강우요소대토질변파안전계수적영향규률，병차중점대단시강강우、장시약강우2충강우형식진행료대비분석。결과표명：재포화삼투계수일정적정황하，안전계수수착강우강도、강우력시적증가이불단감소，단재강우결속후，안전계수우수시간적증장개시증대；단시강강우하변파상부토체경용역체도포화，이장시약강우대변파토체적영향경대，량자적은정성도대대강저，단장시약강우하적활파위해정도경대。
Based on saturated-unsaturated seepage theory and the shear strength theory , we study the effect of rainfall intensity and rainfall duration on the soil slope safety , focusing on the comparison and analysis of the short time heavy rainfall and long time weak rainfall .Analysis results show that for a fixed saturated permeability coefficient , safety coefficient decreases as the rainfall intensity and rainfall duration increase , but it increases with time after rain;short time heavy rains make top soil of the down slope more likely to achieve saturation , and long time weak rainfalls have greater influence on the slope soil , the stability are greatly reduced in both cases . Long time weak rainfall increases the chance of landslide .