| Project/Area Number |
18K04346
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 22030:Geotechnical engineering-related
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| Research Institution | Tottori University |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | エロージョン量 / 侵食量 / 入射角度 / 入射速度 / 衝突痕 / サルテーション / 一軸圧縮強度 / クレーター / 法線方向速度比 / 法線方向入射速度 / 速度比 / 黄砂 / 粒子衝突 / 土壌クラスト |
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| Outline of Final Research Achievements |
Experiments were conducted in which glass beads were impacted on specimens made from simulated specimens, using the strength of the simulated specimens, the angle of incidence of the glass beads, and the velocity of the glass beads as parameters.The relationship between the strength of the simulated specimen and the amount of erosion was shown to be as follows: for qu=100kN/m2, the amount of erosion increased with an increase in the angle of incidence. However, for qu=200kN/m2 and qu=300kN/m2, the maximum amount of erosion occurred at an incident angle of 30 degrees, and this amount decreased at an incident angle of 60 degrees.Therefore, it is considered that soil crust disintegration due to particle impact is similar to the angle-of-incidence-erosion relationship for metals.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は，乾燥地域の土壌クラストが粒子衝突により崩壊する現象について，直径約0.5mmのガラスビーズが土供試体に衝突し発生する侵食量について実験的検討を行なった。実験より粒子衝突によるクラストの崩壊は，金属の入射角度－エロージョン量関係と同様であることを示唆する結果を得た。これより，土壌クラストの強度を測定できれば，土壌クラストの崩壊予測が可能になるものと考えられる。
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