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中文摘要：
对Hoek-Brown强度准则中岩体地质力学指标GSI和扰动参数D的评估值进行统计分析发现，不同评估者对岩体GSI值的评估有较强的一致性，而对D值的评估则呈现很高离散性．扰动参数D的评估值的离散性是岩体力学参数估计值可靠度降低的主要原因，因此，对Hoek-Brown经验强度准则而言，给出一种更为准确的D值确定方法是十分必要的．通过分析现有的岩体扰动参数确定方法的局限性以及基于声波测试理论的岩体完整性评价方法，探讨了基于声波传播速度的扰动参数D的确定方法以及在实际工程中考虑或忽略开挖扰动的基本原则，并通过有限元算例与Hoek等人的理论进行了比较．
英文摘要：
The statistic analysis of the estimated values of geology strength index（GSI） and disturbed factor D for rock masses is carried out which are the main parameters in the Hoek-Brown strength criterion（2002 edition）. It indicates that the GSI values of the same type rock mass estimated by different participators are relatively consistent; however, the estimated D values are much more dispersive which will make the reliability of the estimated parameters of rock masses lower. Therefore, a more precision method is needed. A new exact method to determine the D value is proposed based on the elastic wave test theory. The main principle that the disturbed zone should be considered or neglected is discussed. A simple finite element example is given to compare the theory of Hoek and this paper.
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