【作者】 郭永春；

【导师】 谢强；

【作者基本信息】 西南交通大学 ， 地质工程， 2002， 硕士

【摘要】 小得江滑坡位于云南省罗平县小得江村，南昆铁路从滑坡的前缘通过，该滑坡属于厚层—巨型牵引式堆积层滑坡。本文以小得江滑坡为研究对象，在详细的地质勘察、经验判断与理论分析的基础上，查明小得江滑坡主要受到哈木格断裂、本块向斜，泥质粉砂岩、泥岩、页岩互层的易滑坡地层，水文地质条件，人为因素的影响，构成了目前滑坡形成的地质和水文地质条件与环境。 利用已有的长期观测资料，建立了非线性回归预测模型、指数平滑预测模型、时间序列自回归预测模型、灰色预测模型、BP人工神经网络预测模型。在工程地质定性分析的基础上，应用这些模型多角度定量预测了小得江滑坡的变形趋势，为小得江滑坡的整治工作提供了科学依据。 以瑞典条分法为基础，进行了滑坡稳定性影响因素的敏感性推导与分析，研究表明滑坡水位和滑带土内摩擦角对小得江滑坡稳定性的影响尤其重要，并提出了本文建议的稳定性计算参数。在此基础上，应用传递系数法、瑞典条分法、综合C、Φ法等方法定量评价了小得江滑坡抗滑桩设置前后的稳定性。 研究结果表明：小得江滑坡在抗滑桩设置前是不稳定的，它的变形有逐渐增加的趋势。在抗滑桩设置以后，滑坡的稳定性有了显著的提高，它的变形得到了有效的控制，说明对小得江滑坡的治理措施是及时有效的。更多还原

【Abstract】 Xiaodejiang landslide lies in Xiaodejiang Village of Luoping County in Yunnan province. Nanning-Kunming railway crosses the toe of it. It is an enormous accumulation horizon landslide in traction model. Based on detail field investigation, an experiment in laboratory, experiential judgment and theory analysis, the genesis of Xiaodejiang landslide is found out. The structure of Hamuge fault and Benkuai syncline, the slippery stratum of pelitic siltstone, mud stone and shale, the geo-hydrological condition and the human’s influence lead to the formation of the landslide.At the same time, with the long time monitoring data, some models for deformation prediction of landslide are established such as the nonlinearity regression fitting model, the exponential smoothing model, the time series analysis model, the gray model and the BP neural network model. Based on the qualitative analysis of engineering and geology conditions, the deformation tendency of Xiaodejiang landslide is predicted quantitatively with the models to provide the evidence for the prevention and cure in future.Based on the Method of Swedish Slices, the sensibility of the factors affecting the stability of Xiaodejiang landslide is deducted and analyzed. The result shows that ground water and the angle of friction are very important to the calculation of stability of Xiaodejiang landslide. By Methods of Transfer Coefficient, Swedish Slices and Synthesis C and , the landslide stability before and after anti-slide pile constructed is evaluated.The study result shows that the Xiaodejiang landslide is unstable before anti-slide pile constructed and its deformation increases gradually. By contraries, Xiaodejiang landslide’s stability increases obviously after anti-slide pile constructed. Moreover, its deformation iscontrolled effectively. It shows that anti-slide pile construction is effective and in time.更多还原