Finite element analysis on coupled stress and fluid flow behavior of rock-like porous material caused by low temperature source.

低温源引起的类岩石多孔材料应力与流体流动耦合行为有限元分析

• 批准号: 10650477
• 负责人: YAMABE Tadashi
• 金额: $ 2.05万
• 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: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650477/
• 关键词: Coupled Phenomena; Freezing and Thawing; Numerical Analysis; 三軸圧縮試験

A freezing and thawing triaxial compression test has been conducted in a laboratory using a cylindrical specimen. The aim of the test is an investigation into the deformation and strength characteristics of sand stone 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 stability 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 behaves as a homogeneous elasto-plastic continuum with respect to heat flow.

在室内进行了冻融三轴压缩试验。试验的目的是研究砂岩的变形和强度特性，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稳定性问题进行了对比，得出以下结论：1）岩体的变形行为主要由两个过程引起。即水的热膨胀和岩石材料的收缩;2）解冻条件对应变分布模式有明显的影响; 3）岩石在热流方面表现为均匀的弹塑性连续体。

项目成果

Krishna K.M., Yamabe T. and Yoshinaka R.: "Finite element analysis of slope instability resulting from natural process of ground freezing and thawing"Rock Mechanics. 123-126 (1999)

Krishna K.M.、Yamabe T. 和 Yoshinaka R.：“地面冻融自然过程引起的边坡失稳的有限元分析”岩石力学。

長田昌彦、山辺正、吉中龍之進: "稲田花崗岩の初期マイクロクラック分布"応用地質. 39・6. 500-510 (1999)

Masahiko Nagata、Tadashi Yamabe、Tatsunoshin Yoshinaka：“稻田花岗岩中的初始微裂纹分布”应用地质学 39・6（1999）。

Krishna K.M.,Yamabe T.& Yoshinaka R.: "Finite element analysis of slope instability resulting from natural process of ground freezing and thawing"9th Int. Congress on Rock Mechanics. 123-126 (1999)

克里希纳 K.M.、山边 T.

Krishna.N.,T.yamabe & R.Yoshinaka: "Finite Element Analysis of Slope Instability Resulting from Natural Process of Ground Freezing & Thawing" Proc.of 9th Int.Congress of ISRM. (印刷中). (1999)

Krishna.N.、T.yamabe 和 R.Yoshinaka：“地面冻结和解冻自然过程导致的斜坡不稳定性的有限元分析”，ISRM 第九届国际会议论文集（1999 年）。

長田昌彦,山辺正他: "熱収縮チューブを利用した岩石のひずみ計測方法の検討"土木学会論文集. NO.63g III-49. 217-226 (1999)

Masahiko Osada、Tadashi Yamabe 等：“使用热缩管的岩石应变测量方法的研究”日本土木工程师学会会刊 NO.63g III-49 (1999)。