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:岩芯成饼单元安全度三维数值试验及地应力反馈分析

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Date of Publication:2010-08-15

Journal:岩石力学与工程学报

Included Journals:PKU、ISTIC、CSCD、EI、Scopus

Volume:29

Issue:8

Page Number:1610-1617

ISSN No.:1000-6915

Key Words:岩石力学;地应力;岩芯饼化;单元安全度;数值模拟

Abstract:岩芯饼化是深部及高应力地质环境特有的现象,通过岩芯饼化来推测地应力有重要的理论和工程意义.首先模拟不同应力对岩芯饼化厚度的影响,并综合三维弹性数值模拟和带拉伸的莫尔-库仑强度准则,提出岩芯饼化"潜在破坏面"单元安全度的计算方法,研究不同地应力对岩芯潜在破坏面的影响.模拟结果表明,在水平应力一定的条件下,随着竖向地应力的变化,竖直岩芯潜在破坏面单元安全度、剪切破坏和拉伸破坏模式都发生变化.单元安全度方法能够直观显示岩芯潜在破坏面安全度的分布,并量化地反映地应力与岩芯破坏模式之间的对应关系.采用单元安全度方法,对美国Williston盆地Bakken页岩储层的前期勘测地应力和观测岩芯分析,取得相一致的计算结果,说明利用该方法分析与识别地应力是可行的.

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