滑坡稳定性评价中传递系数法的适用范围研究

传递系数法是规范中用来计算滑坡稳定性系数和滑坡推力的一种通用有效的方法，然而在使用该法时仍存在较多问题。基于此，首先从该法的基本假设出发总结了其优缺点和适用范围，其次解析了该法的两类衍生解法（强度储备法和超载法）中的计算要点和取值范围，并阐述了稳定性系数和安全系数的区别。最后介绍了滑动面抗剪强度指标与滑坡宏观变形之间的联系，分析了分块条数对稳定性系数的影响，以及渗透压力计算公式的选取，得出具体工程中，应以不同的分块条数分别进行计算对比选取的结论。

On Application Scope of Transfer Coefficient Method in Evaluation of Landslide Stability

Transfer coefficient method is a commonly-used method to calculate landslide stability factor and landslide thrust in the standards, however, there exist many problems yet. Therefore, this paper firstly based on the basic assumptions of the method, summarized its advantages and disadvantages and the scope of application; secondly analyzed the key points of calculation and the range of values in its two derivative resolutions (strength reserve method and over-loading method), and described the difference between the stability factor and the safety factor; at last, introduced the relation between the shear strength of slide surface and the macroscopic deformation of landslide, and analyzed both the effect of slicing on the stability factor and the selection of calculation formula for seepage pressure. As a result, it is concluded that, in specific project, the number of slices shall be based on to carry out the related calculation, comparison and selection.