为研究解决围岩复杂性、多样性带来的隧道围岩准确分级难题，结合围岩分级方法发展趋势，总结评述各类隧道围岩分级方法及研究进展。首先，归纳总结传统围岩分级方法，对其优缺点进行分析对比，总结了在特殊地质条件、机械化施工方法工况下对传统围岩分级体系的修正情况； 然后，从判识条件、研究方法2个方面对近几年围岩分级的新理论、新方法进行了总结与评价； 最后，对比分析了各种围岩分级智能辅助决策算法的优缺点。研究表明： 1）目前实际工程中，仍然以传统围岩分级方法为主，但根据施工方法、地质特征不同采取了积极有效的修正措施，以确保围岩分级的准确性与客观性。2）新兴的围岩分级理论和智能方法能够较好地适应现代化的施工方法与理念，但因其准确度和普适性尚未得到大量工程验证，多用于围岩分级的辅助决策。

The complexity and diversity of surrounding rock affect the accurate classification of tunnel surrounding rocks. Therefore, the development trend of surrounding rock classification methods is presented, and various tunnel surrounding rock classification methods and research progress are summarized and reviewed. First, the conventional surrounding rock classification methods are summarized, their advantages and disadvantages are analyzed and compared, and the modification effects of conventional surrounding rock classification methods under special geological conditions and mechanized construction methods are summarized. Second, the novel theories and methods of surrounding rock classification arose in recent years are summarized and evaluated from the aspects of identification conditions and research methods. Finally, the advantages and disadvantages of various intelligent assistant decision algorithms for surrounding rock classification are compared and analyzed. The research results show the following: (1) At present, the conventional surrounding rock classification methods are still priorities in the actual project, but assistant modifications are adopted according to the different construction methods and geological characteristics to ensure the accuracy and objectivity of the surrounding rock classification. (2) The emerging surrounding rock classification theories and intelligent methods can better adapt to modern construction methods and concepts, but they are mostly used for auxiliary decisionmaking of surrounding rock classification because of their uncertain accuracy and universality.