It is valuable to build an empirical model to estimate rock mass deformation modulus which is difficult to be determined by in situ tests. Based on 84 data sets from Yalong River Jinping-I hydropower station, the correlation between some easily measured geotechnical parameters and rock mass deformation modulus is analyzed. A two-parameter estimation model with higher estimation capacity than previous models is established based on a nonlinear regression algorithm. The P-wave acoustic velocity (V_p) and Q-value of rock mass are included in this two-parameter estimation model. Besides, according to the obtained data, it is not suitable to use an empirical model including elastic modulus of intact rock (E_i) to estimate rock mass modulus under high crustal stress condition.

建立现场试验难以确定的岩体变形模量的经验模型是很有价值的。以雅砻江锦屏一级水电站84组数据为基础，分析了一些易测岩土参数与岩体变形模量的相关性。基于非线性回归算法建立了比以往模型具有更高估计能力的双参数估计模型。该双参数估计模型中包含岩体的 P 波声速 ( V _p ) 和Q值。此外，根据获得的数据，不适合使用包括完整岩石弹性模量（E _{i ）}的经验模型。) 估计高地应力条件下的岩体模量。