Thermo-hydro-mechnical behavior of rock materials under low temperature and rock slope instability analysis by FEM

低温下岩石材料的热水力学行为及有限元岩石边坡失稳分析

• 批准号: 13650536
• 负责人: YAMABE Tadashi
• 金额: $ 1.79万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650536/
• 关键词: Coupled Phenomena; Freezing and Thawing; Numerical Analysis; 時間依存性

A freezing and thawing triaxial compression test has been conducted using a cylindrical specimen. The aim of the test is an investigation into the deformation and strength characteristics of rock-like materials with the goal of understanding the deformation through temperature change. The numerical procedures by finite element method is composed of non-linearly coupled heat-stress-fluid flow constitutive equations and elasto-plastic relations. The numerical results were compared with the experimental results and also slope instability problem, yielding the following conclusions.1) The deformation behavior of the rock is mainly due to two processes. That is the thermal expansion of water and contraction of rock materials ;2) The thawing conditions have a clear effect on the patterns of strain distributions ; and3) The rock slope instability problem caused by freezing and thawing can be analyzed by the proposed numerical methods and experimental procedures.

采用圆柱形试件进行了冻融三轴压缩试验。该试验的目的是研究岩石类材料的变形和强度特性，目的是了解温度变化引起的变形。有限元法的数值计算程序由非线性耦合的热-应力-流体流动本构方程和弹塑性关系组成。将数值计算结果与试验结果以及边坡失稳问题进行了对比，得出以下结论：1）岩体的变形行为主要由两个过程引起。2）冻融条件对岩石边坡的应变分布有明显的影响; 3）冻融条件下岩石边坡的失稳问题可以通过本文提出的数值方法和实验步骤进行分析。

项目成果

KRISHNA K.M.: "A fully coupled thermo-hydro-mechanical nonlinear model for a frozen medium"Computers and Geotechnics. Vol.28, No.8. 613-637 (2001)

KRISHNA K.M.：“冷冻介质的完全耦合热-水-机械非线性模型”计算机和岩土工程。

Yamabe T. and Krishna K.M.: "Determination of some thermo-mechanical properties of Sirahama sandstone under subzero temperature condition"Int. J. of Rock Mechanics and Mining Science. 38, No.7. 1029-1034 (2001)

Yamabe T. 和 Krishna K.M.：“零下温度条件下 Sirahama 砂岩的一些热机械性能的测定”Int.

山辺 正: "環境条件を考慮した軟岩の時間依存性挙動とその変形予測に関する実験的研究"土木学会第57回年次学術講演会. III-443. 885-886 (2002)

Tadashi Yamabe：“考虑环境条件的软岩随时间变化的行为及其变形预测的实验研究”，第 57 届日本土木工程师学会学术年会 III-443（2002 年）。

山辺 正: "熱環境におかれた堆積軟岩の強度変形特性と処分坑道周辺に関わる2〜3の数値解析"第19回岩盤システム工学セミナー. 97-108 (2002)

Tadashi Yamabe：“热环境中沉积软岩的强度变形特性以及与处置隧道附近相关的一些数值分析”第 19 届岩石系统工程研讨会 97-108 (2002)。

Krishna K.M. and Yamabe T.: "A fully coupled thermo-hydro-mechanical nonlinear model for a frozen medium"Computers and Geotechnics. 28, No.8. 613-637 (2001)

克里希纳 K.M.