• Journal of Forest and Environmental Science
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• v.17 no.1
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• pp.104-115
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• 2001

This study was carried out to to execute the slope stabilization scheme of soil and weathered rock slope with forest road generating slope failure due to heavy rainfall. The timber piled stabilization by Shin's formulae for landslide-restraint pile as elastically supported elastic columns under distributed loads was applied on the unstable fill slope. The results obtained were summarized as follows: The timber piled stabilization was applied for unstable slopes such as the soil slope and weathered rock slope of metamorphic rock regions. The results indicated that pile interval of 0.5~1.0m was appropriate in the case of high hillslope gradients and 0.7~2.0m in the case of low hillslope gradients of soil slope, and Pile interval of 0.5~1.3m in the case of high hillslope gradients and 0.7~2.0m in the case of low hillslope gradients of weathered rock slope. Recommended pile length was around 4m for pile 1, 2 and 3, and nearly 3m for pile 4 and 5.