| Project/Area Number |
04650431
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
基礎・土質工学
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| Research Institution | Saitama University |
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Principal Investigator |
YAMABE Tadashi Saitama University, Department of Civil & Environmental Engineering, Associate Professor., 工学部, 助教授 (40125894)
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| Co-Investigator(Kenkyū-buntansha) |
OSADA Masahiko Saitama University, Department of Civil & Environmental Engineering, Research As, 工学部, 助手 (00214114)
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| Project Period (FY) |
1992 – 1993
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| Project Status |
Completed (Fiscal Year 1993)
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| Budget Amount *help |
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1993: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1992: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Coupled Phenomena / Freezing and Thawing / Numerical Analysis / 岩盤 / き裂 / 熱 / 応力 / 浸透 / 連成 |
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| Research Abstract |
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 ; and
3)the rock behaves as a homogeneous continuum with respect to heat flow.
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