| Summary: | 碩士 === 國立臺灣大學 === 森林學研究所 === 89 === Abstract
After the 921 Chi-Chi earthquake, witch brought serious damage to Nantou county, massive landslide caused large amount of debris accumulate on the riverbed and cutting off Cho-Chai-Hoo stream and Shu-Che-Kon stream by forming two impoundment lakes at Cho-Fan-Ur-San. Therefore, investigation against groundwater transformation and earth movement is the key point for future treatment.
In order to speed up the recovery work and preventing heavy rain causing dam break at the impoundment lake after the quake, it is important to gather all basic data, especially geological and hydraulical events for specialty analysis. By the above data, we hope it can provide a reference for future monitoring and transferring system establishments, water and soil conservation construction and vegetation recovery work and plantation for impoundment lake treatments.
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