書誌事項
- タイトル別名
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- Study on Innuence of Cracks caused by Earthquake on Hillslope Stability
- ジシン ニ ヨリ シャメン ジョウ ニ ケイセイ サレタ キレツ ガ ドシャ セイサン キケンド ニ オヨボス エイキョウ
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抄録
In Rokko mountain range, by the Hyogo-ken Nanbu Earthquake to occur on January 17th, 1995, many cracks occurred on a mountain slope. In this study, scale and distribution situation of cracks formed on a mountain slope, was grasped. As considering these results, then, numerical experiments were executed and influence of cracks against slope stability was evaluated using the numerical simulation model for predicting hillside landslides. With these results, in the slope downstream cracks, it was confirmed to ascend suddenly in ground-water level and increase 10-55 cm grade in maximum ground-water level, in comparison to the case without cracks. And, in the case that cracks exist on a mountain slope, appearance time of a collapse slope gets earlier and collapse slope total number increases 10% grade, than the case that cracks don't exist. Furthermore, in order to be as an index to plan effective land erosion control master plan after earthquake, influence of topographic shape of a place where cracks exist on hillside landslides, was evaluated quantity-like. The typical results were as follows:<BR>(1) In the case that cracks were formed on parallel and convex shapes than concave shapes, slope stability falls more remarkably.<BR>(2) Because influence of cracks on sediment yield potential is different by a difference of topographic shape of a place where cracks exist, in case that land erosion control master plan will be reconsidered after earthquake, it is necessary enough to consider a topographic shape of a place where cracks exist.
収録刊行物
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- 地すべり
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地すべり 36 (2), 3-12_1, 1999
公益社団法人 日本地すべり学会
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詳細情報 詳細情報について
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- CRID
- 1390282679522028416
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- NII論文ID
- 10013006024
- 10007512222
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- NII書誌ID
- AN00332562
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- ISSN
- 18843956
- 02852926
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- NDL書誌ID
- 6353927
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- データソース種別
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- JaLC
- NDL
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