加勁擋土牆之設計與施工－以火炎山土石防治工程爲例

Reinforced Retaining Wall Design and Construction-A Prevention Project of Debris Flow in Mt. Huoyan

柳政男(Zheng-Nan Liu) ； 曾志企(Zhi-Qi Zeng) ； 陳金洲(Jin-Zhou Chen) ； 何國彬(Ko-Ping Ho)

《水保技術》 6卷3期 (2011/07) Pp. 162-170

https://doi.org/10.30040/JSWCT.201107.0004

摘要

火炎山於921大地震後常於颱風豪雨過後發生土石災難，現地採用之石籠及土石堤等工法亦未能有效杜絕土石肇災。爲落實節能減碳之政策，於各類災情整治及建設上政府多鼓勵在安全無虞下採用「綠色建築」或「生態工程」，屬於標準生態工程之加勁工法於台灣則已邁入成熟普遍之階段，本案即針對火炎山土石問題首次採用加勁土堤圍堰及導引工法進行整治。本篇先剖析火炎山土石流之成因與特性及肇災機制，再就加勁工法之設計與施工摘其要紀錄其過程與重點，經十數次颱風豪雨侵襲後已證明在適當設計下加勁工法確實可用於治理土石問題，並具極佳之成效。

關鍵字

加勁土堤 ； 火炎山 ； 土石防治

並列摘要

The discussed project is located at the toe of Mt. Huoyan. In recent years, frequent unsympathetic climate brought extreme torrential rain. Possibly the cloudburst took accumulated deposits to the tunnel portal and the local transportation was definitely suspended. To prevent Mt. Huoyan from Earth Calamities, a mechanically stabilized earth (MSE) embankment was built while the structure was encouraged with it's characteristic of green construction. To carry out a perfect performance with the MSE embankment, studies relative to the subject were prepared well and then a mechanically safety structure was designed with most embankment body made up of the local earth materials. Though MSE embankment was not as popular as a RC structure then, still with an well-controlled mechanical strength in geogrid and procedure in construction, an precise positioned MSE embankment is firmly proved that it really satisfied all expectations after 2 years with undergoing of attacks at least 10 typhoons.

並列關鍵字

Reinforced Retaining Wall ； Mt. Huoyan ； Prevention of Debris Flow