清江杨家槽滑坡监测及三维有限元分析

Monitoring and Three Dimension Finite Element Analysis of Yangjiachao Landslide of Qingjiang River

将滑坡体数值分析计算成果与滑坡监测数据结合起来对滑坡稳定性进行综合分析评价,是近年来的一大进步。利用概化设定的计算模型,使用非线性三维有限单元法,采用Marc软件并进行二次开发,计算出清江隔河岩水库杨家槽滑坡体的应力和位移值,并将计算的位移值与监测位移值进行比较,确认了所选用滑坡体计算模型的合理性。最后在此计算模型的基础上,综合考虑各种不利荷载情况,对杨家槽滑坡的整体稳定性作了分析评价。

It's an advancement to combine the result of landslides numerical analysis with monitoring data of landslides for stability analysis. Firstly, the three、dimension finite element method and generalizational calculation model are applied to obtain the stress and displacement of Yangjiachao landslide of Qingjiang Geheyan reservoir. Secondly, the differences between calculated and observed displacement data are compared. The result shows that the above calculation model is feasible in the analysis of landslides. Based on this model, the stabilities of Yangjiachao landslide in various load states are respectively evaluated lastly.