Study on the breakage mode and risk analysis of Tangjiashan barrier dam
Wen-Jie XU*, Yu-Xin JIE, Yu-Zhen YU
International Symposium on Earthquake-induced Landslides, November 7-9, 2012, Japan. （国际会议）
Abstract: The Wenchuan Earthquake (Ms 8.0), which happened in Sichuan, China on May 12, 2008, marked a major natural disaster in the human history. In the seismic disastrous area of Wenchuan Earthquake, over 100 barrier dams were generated due to landslides and river blocking. Taking Tangjiashan barrier dam as an example, which had the most dangerous and the largest reservoir storage capacity of barrier lake in this earthquake event, this paper carries out a systematic study on the breakage mode and the disasters in this breakage process. Through the analysis, this paper concludes that the overflow and overtopping of Tangjiashan barrier dam is the most likely breakage mode. The analysis results may provide references to the implementation of disaster prevention and mitigation in the future similar ones.