Debris-flow occurrence probability on hillslopes

被引：0

作者：

Chen, JC ^{[1
]}

Jan, CD ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Hydraul & Ocean Engn, Tainan 70101, Taiwan

来源：

DEBRIS-FLOW HAZARDS MITIGATION: MECHANICS, PREDICTION, AND ASSESSMENT | 2000年

关键词：

D O I：

暂无

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

This paper derives a critical relation for the occurrence of a debris flow, based on the condition that the driving stress exceeds the resistance stress acting on the inclined soil layer of a hillslope. The uncertainty of significant hydrogeological variables in the critical relation is analyzed and evaluated. Considering the uncertainty of such hydrogeological variables, we derive an equation for debris-flow occurrence probability, based on the first-order, second-moment method (FOSM). This equation is used to estimate the occurrence probability of debris flows on a hillslope in Tunshing village, Taiwan. The result is compared with that by the Monte Carlo simulation method (MCSM).

引用

页码：411 / 416

页数：6

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