Chunan Tang   

Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates

Main positions: President of international exchange committee of the Chinese Society of Rock Mechanics and Engineering CSRME
Other Post: Vice President of the Chinese Society of Rock Mechanics and Engineering CSRME

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Language:English

Paper Publications

Title of Paper:基于统计概率分布的缺陷岩体建模与分析方法

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Date of Publication:2016-08-15

Journal:武汉理工大学学报(交通科学与工程版)

Included Journals:ISTIC

Volume:40

Issue:4

Page Number:641-645

ISSN No.:2095-3844

Key Words:岩石缺陷;节理岩体;数值计算;破坏过程分析;有限元

Abstract:依据岩石露头和岩芯采样获取岩体缺陷的统计信息,抽象出缺陷主轴长度、粒径、倾角等几何参数的概率分布特征.针对岩体中蕴含的颗粒、孔洞、裂隙、层理提出了缺陷的统一建模和自动生成方法,并开发了缺陷岩体参数化建模软件.结合有限元方法(FEM)和真实破坏分析方法(RF-PA),对岩体的破裂行为进行了较为精细的分析计算.数值试验结果表明,即使是几何参数满足相同分布规律的正交节理岩体,其峰值强度最大相差15.7%,残余强度最大相差16.8%,依然表现出较高的随机性和离散性.有必要对多次生成的数字岩心重复压裂,用以获取宏观强度的分布区间.

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