Underwater explosion protection range of conventional concrete face rockfill dam and its influencing factors
ZHANG Qi-ling1，2, LI Duan-you1，2, LI Bo1，2
1. Changjiang River Scientific Research Institute, Wuhan 430010, Hubei, China2. Research Center on Water Engineering Safety and Disaster Prevention of MWR, Wuhan 430010, Hubei, China
Abstract：In view of the weak knock resistance of concrete face rockfill dam (CFRD), it is essential to determine a rational underwater explosion protection range before dam in the interest of design of anti-terrorism safety protection, underwater monitoring and prewarning. A conventional 100m-high CFRD was analyzed using Abaqus/Explicit. The structural damage and failure of concrete face and their influencing factors were focused on. The dam-foundation-water interaction was considered and the water was simulated using acoustic element. Several explosive distances were supposed with a 10kg-TNT charge underwater explosion before dam. The result shows that different conventional assignments of the three parameters including rockfill’s deformation modulus Er, friction factor of vertical and peripheral joints fj and friction factor of contact between concrete face and rockfill fb do not exert an essential influence on the prediction of concrete face’s structural failure. It is concluded that the rational underwater explosion protection distance Dp before dam should be determined as 200m.
张启灵;李端有;李波;. 常规面板堆石坝坝前水下防爆距离的确定和影响因素[J]. , 2013, 32(6): 78-83.
ZHANG Qi-ling;LI Duan-you;LI Bo;. Underwater explosion protection range of conventional concrete face rockfill dam and its influencing factors. , 2013, 32(6): 78-83.
2013, Vol. 32 
