[1]戴欣怡,许中立.好茶部落自然环境与土砂灾害之探讨[J].水土保持研究,2009,16(06):265-270.
　DAI Shin-yi,HSU Chang-li.Discussion of Natural Environment and Sediment Disasters in Houcha Tribe Area[J].Research of Soil and Water Conservation,2009,16(06):265-270.
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好茶部落自然环境与土砂灾害之探讨

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 16 期数: 2009年06期 页码: 265-270 栏目: 出版日期: 2009-12-20
Title:
Discussion of Natural Environment and Sediment Disasters in Houcha Tribe Area
作者:
戴欣怡1, 许中立2
1. 屏东科技大学 坡地防灾及水资源工程研究所, 台湾 屏东 912;
2. 屏东科技大学 水土保持系, 台湾 屏东 912
Author(s):
DAI Shin-yi1, HSU Chang-li2
1. Graduate Institute of Disaster Prevention on Hillslopes and Water Resources Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan 912, China;
2. Department of Soil and Water Conservation, Pingtung University of Science and Technology, Pingtung, Taiwan 912, China
关键词:
台风; 土石流; 河道淤积; 环境地质
Keywords:
typhoon; debris flow; sediment transport; environment geology
分类号:
X171.1;P642.23
摘要:
好茶部落位处台湾屏东县北端雾台乡南侧，紧邻高屏溪流域之支流隘寮南溪旁，2005-2007年接连遭逢台风暴雨使得部落周边遭受严重之崩塌、土石流与洪水等灾害。研究则以好茶部落历史灾害、环境地质、致灾情形、肇灾原因与河道蜿蜒变化。研究结果发现好茶部落周围灾害成因主要为降雨量过大、环境地质条件不佳与排水系统不良外，原河道宽度不足与河道主深槽差异致使河道纵横向刷深扩大，以及部落位处河阶堆积层，住户距河道及边坡之缓冲距离不足等因素有关。又因近年之雨季降雨量均超过年平均降雨量，致使好茶部落周边地质条件变得较为软弱，更易发生冲蚀崩塌灾害。隘寮南溪河道变迁亦为造成好茶部落酿灾因素之一；自集水区上游往下游运移之土砂，不仅抬高溪床，河道束缩段与河道蜿蜒处因洪流冲刷，使河道变迁与影响更为显著。
Abstract:
The Houcha tribe is located in Wutai Township, Pingtung County of south Taiwan, adjacent to Ailiaonan river of the subsidiary current Kaoping river basin. From 2005 to 2007 series of typhoons and heavy rainfall make Houcha tribe suffered serious landslide, debris flow and flood disasters. Investigate and to discuss the history of disasters, environment geology, reasons of disasters and changes of river in this research. Study found that disasters caused by the excessive rainfall, bad environmental geological conductions, adverse drainage system, narrow river cross section and different stream depth, which were made the stream deeper and serious vertical and horizontal expansion erosion. As well as this tribe located in the deposit layer by the stream side, houses close to stream bank and hillside as inadequate buffer distance of such factors. Due to near 3 years rainfall data analyzed result, the annual rainfall in rainy season more than other region of Taiwan. With the result Houcha tribe was surrounding geological conditions become more vulnerable and more susceptible to erosion or landslide disaster. The sediments were transported from watershed upstream to downstream, not only to raise the stream bed, but also to change the topography, especially in narrow and curves area due to flood erosion.

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备注/Memo

收稿日期:2009-8-16;改回日期:。
作者简介:戴欣怡（1981- ），博士生，研究方向：坡地防灾、土砂灾害。E-mail：daimay1008@gmail.com
通讯作者:许中立（1963- ），博士，副教授，研究方向：崩塌地处理技术与监测系统规划、坡地工程规划、大地工程分析、土砂灾害。E-mail：clhsu@mail.npust.edu.tw

更新日期/Last Update: 1900-01-01