关键词: 中风化泥岩, 旁压试验, 深度效应, 临塑压力, 岩石地基承载力特征值

Abstract: By collecting the data of 13 pressuremeter test points in the moderately weathered mudstones in Wuhan Chow Tai Fook Financial Center, the characteristics of the pressuremeter test curve that not approaching the limit pressure P_L convergence are expounded. It is observed that P₀、P_f、f_a、G_m、E_m and other parameters in the moderately weathered mudstone tend to increase with the increase of depth. This depth effect is also briefly analyzed in the paper. It is proposed whether the characteristic value f_a of rock mass bearing capacity determined by the pressuremeter test needs depth width correction and method for the correction is also provided. At the same time, by comparing the P₀ and P_f with the q_sia and q_pa determined by the pile load test, the approximate relationship between them is evaluated. These analyses and reflections are intended to draw the attention of Wuhan area to the pressuremeter test in the moderately weathered rock mass.

Key words: Moderately Weathered Mudstone, Pressuremeter Test, Depth Effect, Temporary Plastic Pressure, Characteristic Value of Bearing Capacity of Rock Mass