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來源資料
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題 名 | 土石流之發生模式探討 |
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作 者 | 黃宏斌; | 書刊名 | 農業工程學報 |
卷 期 | 37:4 1991.12[民80.12] |
頁 次 | 頁35-47 |
分類號 | 434.273 |
關鍵詞 | 土石流; |
語 文 | 中文(Chinese) |
中文摘要 | 土石流為土石與水之混合體,其運動型態為集體搬運,破壞力較個別搬運大,對人民生命財產之安全危害甚鉅。 本研究依據土壤力學之理論基礎,推導出或證明水位與堆積面齊平、水位於堆積面之下與堆積面之上有地表逕流等三種情況之土石流發生模式。 另外,依據直剪試驗結果,證明凝聚力與內摩擦角會隨含水量之增加而減少。從渠槽試驗知,表面流速並非等速;而為時間之7次方或13次方。最後,經過驗證後,發現本研究之試驗點與理論分析者頗為吻合。 |
英文摘要 | Debris flow is a mixture of soil, sand and water. Its motion type is belong to mass movement, and destructive force is larger than that of individual movement. The threat of debris flow to people's lives and property is very enormous. This study, in accordance with the basic theory of soil mechanics, derived or testified the occurrence models for debris slow under the conditions of water level being at cumulative surface, water level under cumulative surface and surface runoff on cumulative surface. Moreover, according to the result of direct-shear test, this study testified that cohesive force and internal friction angle were going to be decreased with increasing water content. And, from the investigation of flume experiment, surface velocity of debris flow were unsteady whose velocity were seventh or thirteenth power of time. Finally, after the verification, the test data of this study matched good with that from theory analysis. |
本系統中英文摘要資訊取自各篇刊載內容。