隧道施工期关于岩石坚硬程度指标的准确获取，是隧道围岩快速分级面临的实际问题，现行规范要求采用岩石单轴饱和抗压强度作为岩石坚硬程度的定量指标。为寻求关于岩石单轴饱和抗压强度最优的替代方案，对岩石单轴饱和抗压强度的不同替代方案和指标的优缺点进行分析比较，并通过使用里氏硬度计对不同岩性的岩石进行室内试验分析，研究泥岩类岩石和砂岩类岩石里氏硬度值与单轴饱和抗压强度之间的关系。利用数理统计软件SPSS24.0对岩石的里氏硬度值及单轴饱和抗压强度值进行回归分析，指出里氏硬度值与岩石单轴饱和抗压强度二者存在相关关系，且相关性较强，并构建不同岩性的岩石在饱和状态下单轴抗压强度与里氏硬度值的回归预测方程。

The accurate acquisition of rock hardness index during tunnel construction is a practical problem faced by rapid classification of tunnel surrounding rock. The current code requires that uniaxial saturated compressive strength of rock be used as the quantitative index of rock hardness. To find the best alternative scheme for uniaxial saturated compressive strength of rock, The advantages and disadvantages of different alternatives and indices of uniaxial saturated compressive strength of rock are analyzed and compared, and laboratory experimental analysis on rocks with different lithologies is conducted using Leeb hardness tester, and the relationship between Leeb hardness value and uniaxial saturated compressive strength of mudstone rock and sandstone rock is studied. The regression analysis of Leeb hardness and uniaxial saturated compressive strength of rocks is carried out using mathematical statistical software SPSS24.0. It points out that there is a strong correlation between Leeb hardness and uniaxial saturated compressive strength of rocks, and the regression prediction equation of uniaxial compressive strength and Leeb hardness value of rocks with different lithologies in saturated state is constructed.