| Summary: | 碩士 === 國立臺灣大學 === 土木工程學研究所 === 100 === In this study, we discuss the dam failure pattern through experiments. The material used is composed of two particles with diameter 2mm and 9.5mm. Under the same bottom slope, we recorded the failure patterns with different inflow Q (180cm^3/s to 1640cm^3/s ) and different particles size combinations. The observed failure pattern can be classified into three categories (1) no destruction (2)progressive failure from toe (3) overtopping and(4)Comprehensive destruction .
The experiment results showed that the main factor affecting how long the dam will start to fail is the inflow rate. There is a minimum flow rate for the dam to have any failure. As the course particle increases in percentage, the minimum flow rate required for failure also increases. As flow rate increases from the minimum flow rate, the toe erosion following by progressive failure occurs first. Overtopping failure will occur for even larger flow rate. If the percentage of course particle is high enough, overtopping failure will never occur.
|
|---|
