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滑坡灾害的形成是内外因素综合作用的结果,其稳定—滑动—稳定的发展演化过程极为复杂。特别是针对于大型的堆积体滑坡,如何从滑坡形成机理出发,进行较为可靠的稳定性评价,显得尤为重要。文中以贵州省沿河县龙家岩滑坡为例,分别采用传递系数法与三维数值计算定量分析滑坡的稳定性,得出传递系数法分析U型横断面影响下的滑坡稳定性具有较大的局限性,最后探讨了基于能量守恒定律的滑坡稳定性评价思路的可行性。
The formation of landslide disaster is the result of the combined effect of internal and external factors, and its stable-sliding-stable evolution is extremely complicated. Especially for large landslide, it is very important to evaluate the stability of landslide based on the mechanism of landslide formation. Taking the Longjiayan landslide in Yanhe County, Guizhou Province as an example, the stability of the landslide is quantitatively analyzed by using the transfer coefficient method and the three-dimensional numerical calculation respectively. It is concluded that the stability of the landslide under the influence of the U-shaped cross-section is large with the transfer coefficient method Finally, the feasibility of landslide stability assessment based on the law of conservation of energy is discussed.