The second problem analyzed is seismic reliability of concretedam, the artificial neural network model of seismic reliability of concrete gravity dam and concretearchdam is proposed.
The article introduces the process of cracking of the dam heel and the analysis of causes by domestic experts. The effect of dam heel cracking on the safety of Shimen concretearchdam is analyzed.
介绍石门拱坝坝踵产生裂缝的过程及国内专家对裂缝成因的分析，同时分析了坝踵开裂对大坝安全的影响。
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Thermal load is one of the main loads of archdam, at present, the method of adopting thermal load of normal concrete in RCC archdam calculation underestimates the action of temperature.