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
Title of Paper:完整岩石卸荷力学特性的数值模拟研究
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Date of Publication:2006-07-28
Page Number:294-297
Key Words:岩体卸荷;数值模拟;岩石力学;力学特性
Abstract:工程实践表明岩体在加、卸载条件下的力学特性是有区别的.本文针对这一问题,采用岩石破裂过程分析软件(RFPA2D),对完整岩石在加、卸荷情况下的力学特性以及破坏机理进行了对比研究.数值试验结果表明卸载破坏以张破坏为主,破坏面与最大主应力方向的夹角小于加载破坏面,卸载破坏程度比加载破坏严重.卸载破坏前的声发射比较平稳,破坏更具有突发性.卸载破坏时的峰值强度低于加载破坏的峰值强度.卸荷破坏的主要原因是由于卸荷造成了局部损伤破坏,使得岩体中各个力学参数因损伤而产生弱化.
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