泥岩之基本特性及泥岩邊坡之保護措施

Characteristics of Mudstone and the Methods for Slope Protection

李德河(Der-Her Lee) ； 紀雲曜(Yuin-Yao Jhin) ； 田坤國(Kuen-Gwo Tien)

《地工技術》 48期 (1994/12) Pp. 35-47

https://doi.org/10.30140/SG.199412.0003

摘要

西南部泥岩區涵蓋的面積超過一千平方公里，巨厚的泥岩是沉積岩中工程性質最不穩定者，其特性是遇水崩解、易風化、沖蝕率特大以及強度隨著含水量的增加而降低。由於泥岩的基本特性，造成泥岩區中廣泛邊坡沖蝕、崩壞、泥流及沉陷等地質災害的發生，亦使水庫壽命減少。現今泥岩邊坡傳統式保護工法被調查，並評估其成效；研究中之保護工法為國工局之泥岩挖方邊坡多種保護工法全尺寸試驗，以實際觀測結果評估這些工法的保護成效。以上藉由本文之論述，提供工程設計參考。

關鍵字

泥岩 ； 崩解 ； 沖蝕 ； 邊坡保護工法

並列摘要

More than 1000 km^2 area located in both Tainan and Kaoshiung counties in Taiwan is covered by a young and weakly cemented mudstone formation. The characteristics of the mudstone are sensitive in slaking, and weathering, with high erosion rate, and the strength decreased when the water content increased. Owing to these special characteristics, the disaster, such as erosion, plane sliding, rock falling, mud flow and subsidence, and also resulted in reducing the life of the reservoir etc. occurs frequently in the mudstone slope. The conventional slope protection methods used in mudstone area investigated. A project with full scale tests used to overcome the engineering problems of mudstone occurred in Kaoshiung county of Taiwan has been supported by the Taiwan Area National Expressway Engineering Bureau. This paper comments about mentioned methods in detail for engineering design reference for mudstone area in the southwest of Taiwan.

並列關鍵字

mudstone ； slaking ； erosion ； slope protection