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Abstract As an example of a salt mining，the laws of deformation of salt rock in depth are investigated by the mechanics and creep experiment of salt rock. The 3D computational model of the deformation analysis of cavity for salt rock is proposed. The optimization of cavity，stability，and long-term stability are studied on the basis of the in-situ geological conditions；and the change laws of the volume of cavity are studied under different inside pressures. The results show that the scheme of energy storage in salt rock is acceptable in China.
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Received: 10 March 2005
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