Analyses of the mechanism of cavity formation based on relative wells mining in the thin-superincumbent bedded salt mine

On the basis of the basic theory of rock mechanics and basic method of relative wells mining, this article puts forward the mechanism of cavity formation, the stages of cavity formation and the prospect of the reutilization of the cavity by a comprehensive study, concerning with the aspects of laboratory model testing and the recording datum of water-soluble fracturing mining in salt mine.