摘要(英) |
The
14th provincial highway is a major road connecting Taichung,
Tsautun, Kuohsing, Puli and Rem-ain townships. Slope failures induced by
typhoons, heavy rain, or earthquakes not only paralyze traffic but also
cause severe damage in property and threaten lives. Previous
investigation indicated that there are thirteen slopes failed regularly
along the 31~75K section. The main objective of this study is to find
out the failure potential of slope in this region. With the aid of
ArcView 3.X, a Geographical Information System (GIS) software,
geographical and geological factors that influence the failure potention
of slope were quantified. Slopes inside the study region are classified
into zones of stability, low, medium, medium high, and high failure
potential. Results of this study indicate that inclination and
elevation are the two most important factors influencing the failure
potential of slopes. West of the Puli basin , most of the shopes are
classified to have low to medium failure potential. The Puli basin is
located inside the stable region. Most of the slopes east of Puli basin
have medium high to high failure potential. Compared with results of
field investigation, 92% of the 13 regularly fail slopes located in the
zones of medium high and high failure potential. |