常年浸水条件下边坡稳定性分析方法研究

发布时间：2018-05-22 20:32

本文选题：边坡 + 稳定性分析　；参考：《湖南大学》2013年硕士论文

【摘要】：近年来，随着我国各项基础设施建设的蓬勃发展，以滑坡、崩塌、泥石流等形式为主的边坡变形失稳破坏事件频繁发生，，给人民的生命财产安全和工程经济造成了巨大的损失。影响边坡稳定性的因素很多，其中水的作用是关键因素之一，每年因为水的作用发生边坡失稳定的事故不胜枚举。因此开展渗流作用下边坡的稳定性分析的研究，确保边坡安稳定与安全就显得十分必要且很有现实意义。本文首先系统总结和分析了边坡稳定性分析的基本理论，对常用的边坡稳定性分析方法、特点及其适应条件等进行了分析比较，并结合实际工程进行计算，根据计算所得结果对边坡的稳定性进行了分析评价。进而基于渗流基本定律，考虑多孔介质的饱和渗流场和应力场的相互作用对边坡稳定性的影响，推导流固耦合方程并探寻有效的求解方法，为数值模拟计算提供理论依据。此外，通过对是否考虑水的渗流作用以及加固前后等不同工况的数值模拟，对包含桥墩段和不包含桥墩段的边坡稳定性进行了研究，根据计算所得结果，对边坡稳定性进行了分析评价。最后，以长张高速公路K254边坡工程为依据，以本文方法进行了典型断面的计算分划，并通过现场的监测数据，分析了滑坡体、骨架护坡的稳定性，针对加固后的边坡，提出现场动态监测方案，确立了监测内容，为工程的顺利进行提供技术支持和安全保障。
[Abstract]:In recent years, with the vigorous development of infrastructure construction in China, slope deformation and instability events, such as landslide, collapse, debris flow and so on, occur frequently, causing huge losses to people's life and property safety and engineering economy. There are many factors that affect slope stability, among which the role of water is one of the key factors. Therefore, it is necessary and practical to study the slope stability analysis under seepage flow to ensure slope stability and safety. In this paper, the basic theory of slope stability analysis is systematically summarized and analyzed, and the commonly used slope stability analysis methods, characteristics and adaptive conditions are analyzed and compared. According to the calculated results, the stability of the slope is analyzed and evaluated. Based on the basic law of seepage, considering the influence of the interaction between saturated seepage field and stress field of porous media on slope stability, the fluid-solid coupling equation is derived and an effective solution method is explored, which provides a theoretical basis for numerical simulation. In addition, the stability of the slope with and without piers is studied by numerical simulation of whether to consider the seepage effect of water and the different working conditions before and after reinforcement. The slope stability is analyzed and evaluated. Finally, based on the K254 slope engineering of Chang-Zhang Expressway, the typical section is calculated and divided by the method of this paper, and the stability of landslide body and skeleton slope protection is analyzed through the monitoring data in the field, aiming at the reinforced slope. The dynamic monitoring scheme is put forward, the monitoring content is established, and the technical support and safety guarantee are provided for the smooth progress of the project.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU43

【参考文献】