【作者】 陈远中；

【导师】 王媛； 仲济刚；

【作者基本信息】 河海大学 ， 建筑与土木工程， 2006， 硕士

【摘要】 本文系统总结评述了在边坡稳定性分析、滑坡的空间预测和时间预测领域的研究成果以及最新进展,指出了目前该研究领域存在的一些需要解决的问题和可能遇到的困难,在此基础上,针对东深供水改造工程石头岭滑坡体展开了一系列研究。通过对滑坡体的概况及水文地质条件的总结和分析,认为:边坡破坏类型为松散堆积层滑坡,主要是坡残积土在持续的降雨条件下,降雨在松散坡体内聚集,加之坡脚处炭质泥岩遇水软化作用所导致的坡体浅层滑动。并分析了清塘大断裂可能对该滑坡体造成的影响。使用非线性弹塑性强度折减法(商业软件Marc)对所选的边坡的两个控制剖面进行了稳定分析,分析发现,加固前边坡的安全系数在0.8左右,处于不稳定状态。自编程序搜索出两个控制剖面所对应的“最危险滑动面”位置,分别对该滑坡进行了门架式双排抗滑桩、预应力锚索抗滑桩加固方案设计,并对这两种加固方法进行了比较。利用刚体极限平衡法、有限元强度折减法对加固后的边坡进行了稳定性分析,计算发现,加固后,边坡的安全系数有较大程度提高,边坡处于稳定状态。更多还原

【Abstract】 Research advances in the fields of stability analysis of slope slide, space prediction and time prediction of slide are reviewed in the paper. A lot of problems and difficulties are putted forward for future studies. On the basis, a series of research for in the Water Supply Reconstruction Project from Dongjiang to Shenzhen are developed. Through the conclusion and analysis for slide’s general situation and hydrogeological condition, it can be found that the type of destroy is the loose accumulative formation. The reason for destroy is continuous rainfall and the strength of soil decreases. The effect of QingTang fault is analyzed. Using nonlinear elastoplasticity strength reduction FEM calculated two main sections, found the safety was about 0.8 so that the slope was unstable. The reinforce scheme was designed using portal double row anti-sliding piles and prestress anchor cable. The stability of slope was calculated using SlopeCAD and strength reduction FEM after reinforced, the safety factor is large than 1 and slope is stable.更多还原