CAJ | 학술논문

坡沟系统是黄土高原的特有问题,目前有关坡沟系统重力侵蚀的研究相对较少,针对这种情况,采用了国际上最为通用的大型有限元分析软件ANSYS,结合强度折减理论,对碾庄沟流域坡沟系统概化模型在不同典型淤积厚度下的边坡稳定进行了计算,分析了随着流域淤地坝系淤积至不同的典型淤积厚度时坡沟系统的第一主应力和Y方向位移的变化云图,建立了稳定系数和淤积厚度、滑塌体积与淤积厚度的相关方程,揭示了随着淤积厚度的增加,坡沟系统稳定性逐渐增大,重力侵蚀量或侵蚀潜力显著减少的规律.
파구계통시황토고원적특유문제,목전유관파구계통중력침식적연구상대교소,침대저충정황,채용료국제상최위통용적대형유한원분석연건ANSYS,결합강도절감이론,대년장구류역파구계통개화모형재불동전형어적후도하적변파은정진행료계산,분석료수착류역어지패계어적지불동적전형어적후도시파구계통적제일주응력화Y방향위이적변화운도,건립료은정계수화어적후도、활탑체적여어적후도적상관방정,게시료수착어적후도적증가,파구계통은정성축점증대,중력침식량혹침식잠력현저감소적규률.
Slope-gully system is a peculiar problem in the Loess Plateau. The study on gravity erosion of slope-gully systems is relatively small. Aiming at this situation,and by means of ANSYS software and strength reduction theory, the slope stability under different typical deposition thickness is calculated by slope-gully systems physical model of Nianzhuang vally. The mutative figure first principal stress and displacement of Y direction under different typical deposition thickness are analyzed. The relationship of stability factor and deposition thickness, volume slump and deposition thickness are respectively established. Law of stability of slope-gully systems gradually increasing and gravity erosion significant reduction with increasing of deposition thickness was revealed.