摘要
台湾地区由于地质上受到欧亚大陆板块与菲律宾海板块的挤压，摺曲剧烈、地质构造脆弱，加以受到地势陡峻、高温、台风与地震作用以及人为之不当开发等影响，造成山坡地之破坏面积相当广阔，而致使人民之生命财产蒙受重大损失。本文乃以过去２０年期间，对崩塌地与地滑地所进行之调查与研究资料予以整理比较，得知台湾地区发生崩塌与地滑的地质均属第三纪至第四纪的地层，滑动方向则以南向为主，滑动深度虽依不同崩滑型态而异，但其平均坡度则约在１０～２０°之间，诱发滑动的原因仍以受台风豪雨与基脚遭受人为之开挖或溪床之淘刷为最。在防治工程中常采用地表水与地下水的排除工和基脚压土工等之抑制工程，以及挡土墙与打桩等之抑止工程。上述之地质特性与破坏机制以及防治工程可供相关机关尔后对台湾地区之崩塌与地滑之相关研究与处理时参考。
Taiwan is located in the mobile belt of the eastern side of Main Land-Asice and the Pacific Ocean,and highly susceptibile to accidents of hillslope failures as a result of contributing factors such as geography, topography i geology, earthquake, typhoon, heavy rainfall, and improper landuses.This Paper hased on data collected over Past twenty years, summarizes the following results. Frequent slope failures in Taiwan are char.lcterized by young geological formation of the Tertiary Period and the Quaternary Period, failure surfaces with southern aspect,and the average slope of 10- 20°. Triggering factors are heavy rains during typhoon, river erosion, and slope cultivation and development. hased on the cases studied. the engineering methods for slope profection are drainage ditch, drainpipe, drainage well, retaining wall, and piling work.
出处
《水土保持研究》
CSCD
1995年第3期121-134,共14页
Research of Soil and Water Conservation
