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某高速公路路线通过西南某水电站冰水堆积物岸坡,在水库蓄水及运行期间,路基外侧冰水堆积物岸坡将出现一定程度的塌岸与库岸再造.在现场调查分析的基础上对冰水堆积物岸坡的塌岸模式进行了系统的分析,研究分析表明,岸坡的失稳具有整体性,塌岸模式为淘蚀-坍塌.最后,针对工程地质条件和岸坡结构特征较特殊的冰水堆积物岸坡,采用适合坍塌类塌岸预测的两段法和适合整体失稳评价的极限平衡法对该段岸坡进行塌岸预测比较,计算分析表明,采用极限平衡法进行该岸坡的塌岸预测是相对较可靠的.
A highway route passes through the banks of a hydropower deposits of ice and water of a hydropower station in Southwest China. During the impoundment and operation of the reservoir, there will be a certain degree of bank collapse and bank rebuilding on the banks of the embankment on the outside of the embankment. On the basis of on-site investigation and analysis Systematic analysis of the bank collapse pattern of icy water deposits shows that the instability of the bank slope is monolithic and the bank collapse mode is eroded and collapsed.At last, according to the engineering geological conditions and structural characteristics of the bank slope Compared with the two-stage method, which is suitable for the prediction of bank collapse of slump type and the limit equilibrium method which is suitable for the overall instability assessment, the bank collapse prediction of this section of slope is made. Computational analysis shows that the method of limit equilibrium Shore bank collapse prediction is relatively reliable.