该文运用自组织临界状态理论，建立了楔状体临界锥顶角数学模型。
Through application of the theory of self-organized criticality, the critical tapers mathematical models of wedges are constructed in this paper.
根据试验结果，确定了标准砂的临界状态线及临界状态参数。
Then, the critical state lines are provided based on the test results of different stress paths.
分析了散粒体临界状态下的变形特征，应用能量平衡原理导出了临界状态下的变形规律。
This paper analyses the deformation characteristics of granular materials at critical state, and the deformation regulation is derived on the principle of energy equilibrium.
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