Non-linearly Coupled Heat-Stress-Fluid Flow Behavior of Rock under Low Temperature.

低温下岩石的非线性耦合热应力-流体流动行为。

• 批准号: 08650568
• 负责人: YAMABE Tadashi
• 金额: $ 1.28万
• 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: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650568/
• 关键词: Coupled Phenomena; Freezing and Thawing; Numerical Analysis; 弾塑性解析; 非線形挙動; 連成解析; 内部変数

A freezing and thawing test has been conducted in a laboratory using a rectangular specimen with a freezing pipe perpendicular to the rock surface. The aim of the test is an investigation into the conduction of heat in a rock with the goal of understanding the deformation through temperature change. The temperature distributions around the freezing pipe were simulated numerically using homogenous continuum assumptions. 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, yielding the following conclusions.1) The deformation behavior of the rock around the freezing pipe is mainly due to two processes, 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.

在实验室中进行了矩形试样的冻融试验，冻结管垂直于岩石表面。该试验的目的是研究岩石中的热传导，目的是了解温度变化引起的变形。采用均匀连续介质假设，对冻结管周围的温度分布进行了数值模拟。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。通过与试验结果的比较，得出以下结论：1）冻结管周围岩石的变形主要是由水的热膨胀和岩石材料的收缩两个过程引起的：2）解冻条件对应变分布有明显的影响;岩石在热流作用下表现为均匀弹塑性连续体。

项目成果

山辺 正 他: "水の相変化を考慮した砂岩の熱・応力・浸透連成挙動" 第52回土木学会年次講演会. III. 630- (1997)

Tadashi Yamabe 等人：“考虑水相变化的砂岩的耦合热应力渗流行为”第 52 届日本土木工程师学会年会 III 630-（1997 年）。

Yohinaka, R.et al.: "Pore pressure changes and strength mobili-zation of soft rocks in consolidated undrained cyclic loading triaxial tests" Journal of Rock Mechanics and Mining Science. Vol.34, No.5. 175 (1997)

Yohinaka, R.et al.：“固结不排水循环加载三轴试验中软岩的孔隙压力变化和强度动员”《岩石力学与采矿科学杂志》。

Yoshinaka, Ryunoshin et al.: "Deformation behavior of soft rocks during consolidated undrained cyclic triaxial testing" Int.J.rock machanics and Mining Science. 33・6. 557-572 (1996)

Yoshinaka、Ryunoshin 等：“固结不排水循环三轴试验中软岩的变形行为”Int.J.rock machanics and Mining Science 33・6 (1996)。

長田昌彦: "岩盤割れ目系の形成過程を考慮した浸透特性の評価" 第1回岩盤工学シンポジウム講演論文集. 59-66 (1996)

Masahiko Osada：“考虑岩石破裂系统形成过程的渗流特性评估”第一届岩石工程研讨会论文集59-66（1996）。

長田昌彦: "顕微鏡下岩石変形実験による微小割れ目のせん断過程" 第46回応用力学連合講演会予稿集. 279-280 (1997)

Masahiko Osada：“基于微观岩石变形实验的微裂纹剪切过程”第46届应用力学联盟会议记录279-280（1997）。