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介绍了主要岩石应力破坏判据及其适用性,提出了变形破坏判据研究的必要性。基于随机介质理论,提出了随机介质变形破坏判据。该判据与应力水平无直接关系,完全用变形来表示,可避开复杂的本构关系,而且能够正确地反映岩土体固有变形特性,能够直接用监测的变形资料进行岩土体的稳定性评价。并将该判据应用于澳大利亚某边坡的稳定性分析中,预测结果与实测结果较吻合,并得出随着边坡角的增加,滑坡面的变化规律,与极限平衡法的研究结论相类似,但随机介质变形破坏理论是基于变形控制为出发点,以实测资料为基础,无需去求若干假设的滑动面的安全系数,在工程实践中应用更简单方便。
The criterion of rock failure and its applicability are introduced, and the necessity of study on deformation and failure criterion is put forward. Based on the theory of random medium, the criterion of deformation and failure of random medium is proposed. The criterion is not directly related to the stress level and is completely expressed in terms of deformation. It can avoid complex constitutive relations, and can correctly reflect the inherent deformation characteristics of rock mass, and can directly stabilize the rock mass with the monitored deformation data Sexual evaluation. The criterion is applied to the stability analysis of a slope in Australia. The predicted result is in good agreement with the measured result. The change law of the landslide surface is obtained with the increase of the slope angle. However, the theory of deformation and failure of random media is based on deformation control. Based on the measured data, it is not necessary to find the safety factor of some assumed sliding surfaces. It is more simple and convenient to apply in engineering practice.