千枚岩的剪切流变特性研究  

SHEAR RHEOLOGICAL PROPERTIES OF PHYLLITE

作　　者：任光明[1] 徐树峰[2] 段雪琴[1] 贾欣媛 李林[1] 

机构地区：[1]地质灾害防治与地质环境保护国家重点实验室(成都理工大学),四川成都610059 [2]中国水电顾问集团西北勘测设计研究院,陕西西安710065 [3]中国建筑西南勘察设计研究院有限公司,四川成都610059

出　　处：《矿物岩石》2012年第4期1-6,共6页Mineralogy and Petrology

基　　金：国家自然科学基金项目(41072229)

摘　　要：蠕变性和时效特征是岩石的固有力学属性。岩石的流变特性是解释和分析一些地质构造现象、岩体变形破坏以及岩体长期稳定性预测的重要依据。通过对千枚岩沿片理面的剪切流变试验研究,建立千枚岩流变本构模型;并在此基础上,采用伯格斯体模型对该岩石力学参数进行了拟合分析,获取千枚岩沿片理面的长期强度及剪切蠕变本构方程,为该类岩体流变分析与计算提供了理论依据。Creep properties and aging characteristics are the inherent mechanical properties of rocks. They are important evidence for analyzing some geological phenomena, such as rock mass deformation and failure and for predicting long term stability of rock mass. In this paper, a de- tailed rheology test on the features of shear creep along the cleavage of phyllite was made in the laboratory,and a rheological constitutive model of phyllite is established. A fitting analysis of the test data by using the Burgers model is conducted and, the long term strength on the cleavage of phyllite and shear creep constitutive equation are obtained. This experiment provides a reference for rheological analysis and calculation of this kind of rock mass.

关 键 词：千枚岩 剪切流变 长期强度 伯格斯体模型 

分 类 号：TU411.3[建筑科学—岩土工程] TD315.1[建筑科学—土工工程]