Title

利用多時期山崩目錄評估山崩發生度-以曾文水庫集水區為例

Translated Titles

EVALUATING THE LANDSLIDE HAZARD BY USING MULTI-TEMPORAL LANDSLIDE INVENTORY IN TSENG-WEN RESERVOIR CATCHMENT, TAIWAN

DOI

10.6562/JEE.2016.36.4

Authors

陳棋炫(CHI-HSUAN CHEN);王婷慧(TING-HUI WANG);蘇俊陽(CHUN-YANG SU);趙韋安(WEI-AN CHAO);陳勉銘(MIEN-MING CHEN);費立沅(LI-YUAN FEI)

Key Words

多時期山崩目錄 ; 山崩統計分析 ; 山崩規模-頻率 ; 曾文水庫集水區 ; Multi-temporal landslide inventory ; Statistical landslide analysis ; Landslide size-frequency ; Tseng-Wen Reservoir Catchment

PublicationName

工程環境會刊

Volume or Term/Year and Month of Publication

36期(2017 / 01 / 01)

Page #

49 - 66

Content Language

繁體中文

Chinese Abstract

長時期的山崩目錄,有助於了解山崩發生機制、時空變化特性,並可應用於山崩災害防治。本研究以曾文水庫集水區所彙整收集之多年期山崩目錄,探討每年的山崩面積變化情形。山崩統計結果顯示本流域每年新增山崩面積之變化,與年度較大降雨事件,有正向分布之趨勢,降雨誘發之新生山崩位置相對無法預測,但統計結果顯示其崩壞規模也相對較小。而舊有山崩有重複存在及範圍擴大之部分,利用計算坡面單元中,山崩崩壞比例與山崩存在年期,呈現坡面單元之山崩發生度規模-頻率空間分布圖,以提供國土開發利用及防災規劃之分級防範資訊。

English Abstract

For better understanding the spatio-temporal character of landslides, long-period landslide inventory is necessary. This study compiles the multi-temporal landslide inventory from several government units in the Tseng-Wen Reservoir Catchment, southern Taiwan. Statistic results show the areas of new developed landslides positively correlate with the heavy rainfall. Although the location of the newly induced landslides is not fully predictable, the hazardous area induced by these events is relatively small. We turn to focus on the multi-years landslide areas. By calculating the collapse ratio and the existing periods of each terrain slope unit, landslide size-frequency map of slope units could be classified. The thematic maps of landslide build in this study are helpful for the causality exploring and hazard assessment.

Topic Category 工程學 > 市政與環境工程