土石流災害防治之研究（以南投縣陳有蘭溪為研究對象─子計畫：神木村南側出水溪上游土石流發生部之地質特性探討(Ⅲ)
Other Title
The geological characteristics in originated section of debris flow at Chushui
river, south part of Shenmu village (Ⅲ)
river, south part of Shenmu village (Ⅲ)
Date Issued
2001
Date
2001
Author(s)
DOI
892625Z002043
Abstract
The experimental results show that the
major contents of deposited material on the
gully are gravel particles comprising around
68%. The fine particles are less than 10% of
the total. The friction angle of deposited
material ranges from 37.2° to 42.3°. The
friction angle of sandstone ranges from 28.4°
to 47.1°. The friction angle of shale ranges
from 29.3° to 32.9°.
Analysis of the slope stability on the
gully reveals that the deposited geomaterials
and rock slope on both sides of valley is
unstable when saturated. Thus heavy
precipitation may trigger the occurrence of
debris flow.
Subjects
friction angle
slope stability
Publisher
臺北市：國立臺灣大學地質科學系暨研究所
Type
report
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