Coupled Heat-Stress-Fluid Flow Mecahnism of Rock Mass.

岩体热-应力-流体流动耦合机制。

• 批准号: 04650431
• 负责人: YAMABE Tadashi
• 金额: $ 1.22万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04650431/
• 关键词: Coupled Phenomena; Freezing and Thawing; Numerical Analysis; 岩盤; き裂; 熱; 応力; 浸透; 連成

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 anisotropic continuum assumptions. The numerical procedures by finite element method is composed of coupled heat-stress-fluid flow constitutive equations. This model was compared with the observation results, yielding the following conclusions.1)The deformation 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 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。采用均匀各向异性连续介质假设，数值模拟了冻结管周围的温度分布。有限元法的数值计算程序由热-应力-流体流动耦合本构方程组成。结果表明：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;解冻条件对应变分布模式有明显的影响;岩石在热流作用下表现为均匀连续体。

项目成果

吉中 龍之進: "動的繰返し荷重下における堆積軟岩の強度・変形特性" 第25回岩盤力学に関するシンポジウム講演論文集. 116-120 (1993)

Ryunoshin Yoshinaka：“动态循环加载下沉积软岩的强度和变形特征”第25届岩石力学研讨会论文集116-120（1993）。

Yamabe, T.& Kyoya, T.: "Reresentation of anisotropy in rock and rock mass.(in Japanese)" Journal of the Japanese Society of Soil Mechanics & Foundation. Vol.41 No.2. 89-96 (1993)

山边，T.

山辺 正: "原位置凍結融解試験の非定常熱応力解析" 第28回土質工学研究発表会. (1993)

山边正：“原位冻融试验的非稳态热应力分析”第28届土壤工程研究会议（1993年）。

Watanabe, K., Takeda, S., Yamabe, T.et al.: "Displacements of fractures during an in-situfreezing and thawing test." Assesment and Prevention of Failure Phenomena in Rock Engng.265-269 (1993)

Watanabe, K.、Takeda, S.、Yamabe, T.等人：“原位冻融试验期间的裂缝位移。”

Osada, M.: "Estimation of volume of microcracks in rock induced by cyclic loading based on the change of pore water pressure.(in Japanese)" Proc.9th Japan Symposium on Rock Mechanics. 443-448 (1994)

Osada, M.：“基于孔隙水压力变化的循环荷载引起的岩石微裂纹体积的估算。（日语）”Proc.9th Japan Symposium on Rock Mechanics。