This thesis is based on the specific project geology environment of enshi , s tudying the nanlidu landslide of the national highway 318 . the method of finite unit analysis is used in it . and , it gives the comprehensive analysis and evaluati on to the stability of mountain landslide 本研究论文以鄂西恩施州特定的工程地质环境为背景，以318国道南里渡滑坡为研究对象，采用有限元分析的方法，对山体滑坡的稳定性进行了较为全面的分析和评价。
This paper tells an evaluation method based on statistical analysis of geology data ? according to the history of geology change and analysis of project geology about the research section of lidu slope of hurong national highway located in south - west of hubei province , based on abundant actual investigation and experimental data , stressing on tracing the history and rules of development of slope change , we divide the data of investigation and test into two classes , one is external physical feature and structural performance , the other is factor of internal and external dynamic environment , following the analysis of mathematics statistical analysis , which points out the proportion of foundation of geology judgement and puts forward a valid identification beacon of stability 本研究内容是一种以地质数据统计分析为基础的评价方法。根据沪蓉国道南里渡滑坡研究区段的地质历史演变结合工程地质类比法，以丰富的实际勘察、试验资料为依据，以追索滑体的演化历史和发展规律为重点，将滑体的勘察、试验资料划分为外部形态与结构性状和内外动力环境因素两大类，通过数理统计分析，给出地质判据的权重，提出切实可行的稳定性判别标志。从而对斜坡稳定性提出合理的、有说服力的综合评价。
The content of this thesis , through the deformation destruction process of th e typical nanlidu landslide along the national highway 318 , uses the finite unit a nalysis of computation , revealing the elastic , plastic stress and displacement of each joint inside the slide area pointing out the distribution range of the tension stress and the plastic deformation range , computering the stability safety factor of the slide area , gaining the fixed quantity , quota that evaluates the stability of the slide area , revealing the position of the slide area which is most likely to los e its stability , thus , it can provide theoretic proof for the programs which renova te landslides 本文的研究内容是通过318国道南里渡典型滑坡的变形破坏过程，采用有限元计算分析，揭示滑体内部每个节点上的弹、塑性应力及位移，找出拉应力分布区和塑性变形区，计算滑体稳定安全系数，得出衡量滑体稳定的定量指标，揭示滑体最可能失稳的部位，从而为滑坡整治方案提供理论依据。
