| Project/Area Number |
11660236
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | Hirosaki University |
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Principal Investigator |
KADONO Miyoshi FACULTY OF AGRICULTURE AND LIFE SCIENCE, Hirosaki University, LECTURER, 農学生命科学部, 講師 (80003523)
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2001: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2000: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1999: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | Front Core Type Dam / Fill Dam / Crack / Finite Element Method / Surface Seepage / Safety Method / Three Dimensional Analysis / FEM / FEM解析 / 浸潤面 / 老朽化溜池堤体 / 堤体補修 / 前刃金 |
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| Research Abstract |
This research was analyzed in the following procedures about the measure when a crack arises to the core of a front core type dam, and acquired knowledge.
Two-dimensional FEM examined the depth direction to a crack.
Consequently, it turns out that a dam becomes danger, so that the crack was close to the reservoir surface of dam.
The measure method of construction to the crack of a core was proposed.
Validity of this measure method of construction was clarified in FEM and the experiment of sand model.
It turns out that a measure method of construction suppresses a rise of the seepage line by the crack of a core, and a seepage line is drawn safely.
It analyzed about the influence by the partial crack by 3-dimensional FEM.
As for a rise of the seepage line projected also in the crack part, the crack near the reservoir surface of dam is not seen at about 10 %.
If 70 % of the cross direction is exceeded, the effect of core of whole dam is lost and the seepage line of a homogeneous type dam is resembled.
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