The characteristics of loess interface landslide and loess-mudstone layer planelandslide are low sliding velocity, short sliding distance and low stability after sliding.
黄土接触面滑坡、土泥岩顺层滑坡的滑速低、滑距短，滑体具有稳定性差、活性强的特点。
2
The most difficult task in analysis of landslide lies in search of critical slide plane. Intelligence optimization arithmetic has its own spectacular advantage in solving this type issue.
滑坡分析最困难的问题在于临界滑动面的搜索，智能优化算法在解决此类问题时有着独特的优势。
3
The shear slide plane of a landslide is difficult to find, it is even more difficult to have a clear idea of the slide plane and the characteristics of slide affected zone.