随着Hoek-Brown强度准则的不断发展和完善,基于非线性Hoek-Brown强度准则开展岩体稳定性分析开始成为一个课题。由于其具有若干优点,例如适用于复杂的工程问题,强度折减法日益受到重视。通过详细研究,将基于Hoek-Brown准则的强度折减法分为四类,即非线性强度准则线性化方法、“降低”强度包线法、参数折减方法和局部或瞬时线性化方法,并对上述四种方法进行了评述。此外,推导出Hoek-Brown强度准则的应力不变量表达形式,并提出一种新的基于Hoek-Brown强度准则和正应力与剪应力表达式形式的参数折减方案,即σci和mb等比例折减方案,通过数值算例证实了所提折减方案的简便和有效。 With the continuous development and improvement of Hoek-Brown strength criterion, the analysis of rock mass stability based on the nonlinear Hoek-Brown strength criterion has become a topic. Due to its several advantages, such as for complex engineering problems, the strength reduction method is gaining more and more attention. Through detailed study, the strength reduction method based on Hoek-Brown criterion is divided into four categories, that is, the nonlinear strength criterion linearization method, the “reduced” strength envelope method, the parameter reduction method and the local or instantaneous linearization method, The above four methods are reviewed. In addition, the expression of Hotr-Brown strength criterion is derived, and a new parameter reduction scheme based on Hoek-Brown strength criterion and the form of normal stress and shear stress expression is proposed, ie the ratio reduction of σci and mb Program, numerical examples show that the proposed reduction scheme is simple and effective.