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岩体强度是矿山压力和边坡稳定性等研究中的重要因素之一。目前,我国通常用三种方法测取岩体强度指标,即现场大型岩体力学性能试验,大型不规则试块试验和小试块室内抗剪试验。近年来,在水电工程和边坡稳定性计算中,常采用现场大型岩体力学性能试验指标,有时也采用现场不规则试块试验指标,或者两者兼用。此外,用室内小试块三轴试验、单轴试验所获得的指标,除了弹性模量和波桑系数用于有限元的计算中外,一般都不采用。
The strength of rock mass is one of the important factors in the study of mine pressure and slope stability. At present, China usually uses three methods to measure the strength index of rock masses, namely the on-site large-scale rock mass mechanical performance test, large-scale irregular test block test and small-scale test block indoor shear test. In recent years, in the calculation of hydropower projects and slope stability, the on-site large-scale rock mechanical performance test indexes are often used, and occasionally, on-site irregular test blocks are used as indicators, or both. In addition, the indexes obtained with the triaxial test and the uniaxial test of the small indoor test block are generally not used except that the elastic modulus and the wavelet coefficient are used in the calculation of the finite element.