Since the existing assessment methods of sand liquefaction are not mature

there is much limitation in assessing the possibility of deep sand liquefaction.This paper studies the main factors leading to sand liquefaction

applies the clustering analytical method to assess the possibility of deep sand liquefaction.The analytical process is realized using Matlab language

which simplifies the complex computation

and improves the efficiency and precision of assessment.At last a hydroelectric station located in the southwestern China is taken as an example to prove the reliability and feasibility of clustering analysis for assessing deep sand liquefaction.