1991 Fiscal Year Final Research Report Summary
Geomorphological study on the angle of talus slope
| Project/Area Number |
02680197
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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 |
自然地理学
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| Research Institution | University of Tsukuba |
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Principal Investigator |
NATSUKURA Yukinori Institute of Geoscience, University of Tsukuba Associate Professor, 地球科学系, 助教授 (80107341)
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| Co-Investigator(Kenkyū-buntansha) |
SUNAMURA Tsuguo Institute of Geoscience University of Tsukuba Professor, 地球科学系, 教授 (00011164)
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| Project Period (FY) |
1990 – 1991
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| Keywords | Talus / Slope process / Angle of repose / Avalanching / Angle of shearing resistance |
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| Research Abstract |
The maximum stable angle of slope of dry granular materials, alpha_c, is thought to be equal to their angle of shearing resistance, phi. No explicit explanation, however, has been provided, on a physical basis, to the alpha_c - phi relationship. The present study tackled this issue by using aluminum rods through tilting experiments and direct shear tests. Test results show that alpha_c is controlled by rolling of individual particles, and its controlling mechanism is essentially different from that Of phi.
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