Numerical modeling of coupled thermo-mechanical response of a rock pillar
Numerical modeling of coupled thermo-mechanical response of a rock pillar
复制标题
岩柱热力耦合响应的数值模拟
DOI：
10.3724/sp.j.1235.2010.00262
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发表时间：
2010-09
影响因子：
7.3
通讯作者：
Lanru Jing
中科院分区：
文献类型：
--
作者：
Yifeng Chen;Chuangbing Zhou;Lanru Jing
摘要 了解岩体对开挖和热载荷的响应，提高数值模型模拟脆性岩石渐进破坏过程的能力，对于核废料处置库的安全评估和优化设计具有重要意义。国际合作的DECOVALEX-2011项目为数值模型的开发、验证和比较提供了平台，其中Aspo柱稳定性实验（APSE）被选为任务B的建模目标。本文介绍了武汉大学（WHU）团队在连续介质力学框架下使用热力耦合模型对任务B的第一阶段和第二阶段进行的建模结果。岩体对开挖的响应采用线弹性、弹塑性和脆塑性模型进行建模，而对加热的响应则采用耦合热弹性模型进行建模。通过将建模结果与实验观察结果进行比较，讨论了模型表示岩柱热机械响应的能力和局限性。研究结果可为我国北山高放废物处置预选区硬质花岗岩主岩的稳定性和安全性评价提供参考。
Abstract Understanding the rock mass response to excavation and thermal loading and improving the capability of the numerical models for simulating the progressive failure process of brittle rocks are important for safety assessment and optimization design of nuclear waste repositories. The international cooperative DECOVALEX-2011 project provides a platform for development, validation and comparison of numerical models, in which the Aspo pillar stability experiment (APSE) was selected as the modeling target for Task B. This paper presents the modeling results of Wuhan University (WHU) team for stages 1 and 2 of Task B by using a coupled thermo-mechanical model within the framework of continuum mechanics. The rock mass response to excavation is modeled with linear elastic, elastoplastic and brittle-plastic models, while the response to heating is modeled with a coupled thermo-elastic model. The capabilities and limitations of the model for representation of the thermo- mechanical responses of the rock pillar are discussed by comparing the modeling results with experimental observations. The results may provide a helpful reference for the stability and safety assessment of the hard granite host rock in China’s Beishan preselected area for high-level radioactive waste disposal.
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DOI：
10.3724/sp.j.1235.2010.00097
发表时间：
2010-05
期刊：
Joumal of Rock Mechanics and Geotechnical Engineering
影响因子：
--
作者：
A. Gens;S. Olivella;M. Sánchez
通讯作者：
A. Gens;S. Olivella;M. Sánchez
DOI：
10.1016/0148-9062(95)00031-b
发表时间：
1995-07
期刊：
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts
影响因子：
--
作者：
L. Jing;C. Tsang;O. Stephansson
通讯作者：
L. Jing;C. Tsang;O. Stephansson
DOI：
--
发表时间：
2006
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
Z. Hehua
通讯作者：
Z. Hehua
DOI：
10.1016/j.ijrmms.2009.02.010
发表时间：
2009-07
影响因子：
7.2
作者：
J. Andersson;C. Martin
通讯作者：
J. Andersson;C. Martin
DOI：
--
发表时间：
2007
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
Y. Liu;J. Wang;L. Tham;M. Cai
通讯作者：
Y. Liu;J. Wang;L. Tham;M. Cai