莫拉克颱風造成藤枝林道之災損與復建對策建議

The Investigation of Tengjhih Forest Road Disasters and Suggestion of Rebuilding Policy after Morakot Typhoon

許中立(Chung-Li Hsu) ； 吳重君(Chon-Gun Wu) ； 施保呈(Bou-Chun Shih) ； 林秀勇(Sho-Yon Lin) ； 戴欣怡(Shin-Yi Dai)

《坡地防災學報》 8卷3期 (2009/12) Pp. 23-38

https://doi.org/10.29995/JSHR.200912.0002

摘要

2009年莫拉克颱風侵襲帶來的超大豪雨藤枝林道受到衝擊損壞嚴重，影響森林保育工作推動與附近社區居民的進出交通。此次林道的災損大多因排水不良與小坑溝受超大降雨引起底部縱、橫向沖蝕而擴大，進再引起上、下邊坡崩塌的結果。今後林道整治除復建路基為主外，路基的上、下邊坡與坑溝亦應一併處理為宜。過去為了觀光而通行大客車與遊覽車，因而造成本條林道較大的邊坡挖填與轉折彎曲，使得經年維護費用居高不下，未來復建是否仍要維持過去的路寬、坡度與設計等級，應請目的事業主管機關多方考量儘早決策，以利後續復建工作的推動。

關鍵字

莫拉克颱風 ； 林道 ； 坑溝 ； 崩塌 ； 復建

並列摘要

Tengjhih forest road had serious damaged for Morakot typhoon in 2009, bring the influence of ultra torrential rainfall. Influence forest conservation works and business turn over traffic of the nearby community, directly. It is caused to the mostly bad drainage and vertical and horizontal bottom erosion conduction by the ultra torrential rainfall in the forest road area this time, the result cause a large scale landslide on above slope. Beside to rebuild road foundation on the forest road rebuilding in the future and the gully in the above and down slope of road foundation should also be treated together. In the past the motor bus and bus for tourists in order to pass through, therefore cause the slope need larger side to dig and fill out and transfers crookedly and make maintenance expenses remain high of forest road. It must detail consider of rebuild and still keep the way like this road wide and designing grade in the future. The government of competent authority should consider and deicide as soon as possible in any ways for the pushing of rebuild works so as to favorable follow-up.

並列關鍵字

Morakot typhoon ； Forest road ； Gully ； Landslide ； Rebuilding